Develop Reference

A run-time error prevent my to-do application to start - java

This is what I found in the LogCat:
02-26 05:10:44.943: E/AndroidRuntime(844): FATAL EXCEPTION: main
02-26 05:10:44.943: E/AndroidRuntime(844): java.lang.RuntimeException: Unable to start activity ComponentInfo{course.labs.todomanager/course.labs.todomanager.ToDoManagerActivity}: android.content.res.Resources$NotFoundException: Resource ID #0x7f060013 type #0x12 is not valid
02-26 05:10:44.943: E/AndroidRuntime(844): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.os.Handler.dispatchMessage(Handler.java:99)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.os.Looper.loop(Looper.java:137)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.app.ActivityThread.main(ActivityThread.java:5103)
02-26 05:10:44.943: E/AndroidRuntime(844): at java.lang.reflect.Method.invokeNative(Native Method)
02-26 05:10:44.943: E/AndroidRuntime(844): at java.lang.reflect.Method.invoke(Method.java:525)
02-26 05:10:44.943: E/AndroidRuntime(844): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
02-26 05:10:44.943: E/AndroidRuntime(844): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-26 05:10:44.943: E/AndroidRuntime(844): at dalvik.system.NativeStart.main(Native Method)
02-26 05:10:44.943: E/AndroidRuntime(844): Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x7f060013 type #0x12 is not valid
02-26 05:10:44.943: E/AndroidRuntime(844): at android.content.res.Resources.loadXmlResourceParser(Resources.java:2309)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.content.res.Resources.getLayout(Resources.java:934)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.view.LayoutInflater.inflate(LayoutInflater.java:395)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
02-26 05:10:44.943: E/AndroidRuntime(844): at course.labs.todomanager.ToDoManagerActivity.onCreate(ToDoManagerActivity.java:56)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.app.Activity.performCreate(Activity.java:5133)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
02-26 05:10:44.943: E/AndroidRuntime(844): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
02-26 05:10:44.943: E/AndroidRuntime(844): ... 11 more
The Applicaion is a to-do app and it has 4 activities as follows:
1- ToDoManagerActivity
package course.labs.todomanager;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.text.ParseException;
import java.util.Date;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ListView;
import android.widget.TextView;
import course.labs.todomanager.ToDoItem.Priority;
import course.labs.todomanager.ToDoItem.Status;
public class ToDoManagerActivity extends ListActivity {
// Add a ToDoItem Request Code
private static final int ADD_TODO_ITEM_REQUEST = 0;
private static final String FILE_NAME = "TodoManagerActivityData.txt";
private static final String TAG = "Lab-UserInterface";
// IDs for menu items
private static final int MENU_DELETE = Menu.FIRST;
private static final int MENU_DUMP = Menu.FIRST + 1;
ToDoListAdapter mAdapter;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Create a new TodoListAdapter for this ListActivity's ListView
mAdapter = new ToDoListAdapter(getApplicationContext());
// Put divider between ToDoItems and FooterView
getListView().setFooterDividersEnabled(true);
//TODO - Inflate footerView for footer_view.xml file
TextView footerView = (TextView) findViewById(R.id.footerView);
LayoutInflater li = getLayoutInflater();
li.inflate(R.id.footerView, getListView());
//TODO - Add footerView to ListView
ListView lv = getListView();
lv.addFooterView(footerView);
footerView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered footerView.OnClickListener.onClick()");
//TODO - Attach Listener to FooterView. Implement onClick().
Intent intent = new Intent(ToDoManagerActivity.this, AddToDoActivity.class);
startActivityForResult(intent, ADD_TODO_ITEM_REQUEST);
}
});
//TODO - Attach the adapter to this ListActivity's ListView
lv.setAdapter(mAdapter);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
log("Entered onActivityResult()");
// TODO - Check result code and request code.
// If user submitted a new ToDoItem
// Create a new ToDoItem from the data Intent
// and then add it to the adapter
if (requestCode == ADD_TODO_ITEM_REQUEST && resultCode == RESULT_OK)
{
ToDoItem toDoItem = new ToDoItem(data);
mAdapter.add(toDoItem);
}
}
// Do not modify below here
#Override
public void onResume() {
super.onResume();
// Load saved ToDoItems, if necessary
if (mAdapter.getCount() == 0)
loadItems();
}
#Override
protected void onPause() {
super.onPause();
// Save ToDoItems
saveItems();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(Menu.NONE, MENU_DELETE, Menu.NONE, "Delete all");
menu.add(Menu.NONE, MENU_DUMP, Menu.NONE, "Dump to log");
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_DELETE:
mAdapter.clear();
return true;
case MENU_DUMP:
dump();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void dump() {
for (int i = 0; i < mAdapter.getCount(); i++) {
String data = ((ToDoItem) mAdapter.getItem(i)).toLog();
log("Item " + i + ": " + data.replace(ToDoItem.ITEM_SEP, ","));
}
}
// Load stored ToDoItems
private void loadItems() {
BufferedReader reader = null;
try {
FileInputStream fis = openFileInput(FILE_NAME);
reader = new BufferedReader(new InputStreamReader(fis));
String title = null;
String priority = null;
String status = null;
Date date = null;
while (null != (title = reader.readLine())) {
priority = reader.readLine();
status = reader.readLine();
date = ToDoItem.FORMAT.parse(reader.readLine());
mAdapter.add(new ToDoItem(title, Priority.valueOf(priority),
Status.valueOf(status), date));
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParseException e) {
e.printStackTrace();
} finally {
if (null != reader) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
// Save ToDoItems to file
private void saveItems() {
PrintWriter writer = null;
try {
FileOutputStream fos = openFileOutput(FILE_NAME, MODE_PRIVATE);
writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(
fos)));
for (int idx = 0; idx < mAdapter.getCount(); idx++) {
writer.println(mAdapter.getItem(idx));
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (null != writer) {
writer.close();
}
}
}
private void log(String msg) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.i(TAG, msg);
}
}
2- ToDoListAdapter:
package course.labs.todomanager;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RelativeLayout;
import android.widget.TextView;
import course.labs.todomanager.ToDoItem.Status;
public class ToDoListAdapter extends BaseAdapter {
// List of ToDoItems
private final List<ToDoItem> mItems = new ArrayList<ToDoItem>();
private final Context mContext;
private static final String TAG = "Lab-UserInterface";
public ToDoListAdapter(Context context) {
mContext = context;
}
// Add a ToDoItem to the adapter
// Notify observers that the data set has changed
public void add(ToDoItem item) {
mItems.add(item);
notifyDataSetChanged();
}
// Clears the list adapter of all items.
public void clear(){
mItems.clear();
notifyDataSetChanged();
}
// Returns the number of ToDoItems
#Override
public int getCount() {
return mItems.size();
}
// Retrieve the number of ToDoItems
#Override
public Object getItem(int pos) {
return mItems.get(pos);
}
// Get the ID for the ToDoItem
// In this case it's just the position
#Override
public long getItemId(int pos) {
return pos;
}
//Create a View to display the ToDoItem
// at specified position in mItems
#Override
public View getView(int position, View convertView, ViewGroup parent) {
//TODO - Get the current ToDoItem
final ToDoItem toDoItem = (ToDoItem) getItem(position);
//TODO - Inflate the View for this ToDoItem
// from todo_item.xml.
RelativeLayout itemLayout = (RelativeLayout) View.inflate(mContext, R.layout.todo_item, parent);
//TODO - Fill in specific ToDoItem data
// Remember that the data that goes in this View
// corresponds to the user interface elements defined
// in the layout file
//TODO - Display Title in TextView
final TextView titleView = (TextView) convertView.findViewById(R.id.titleView);
titleView.setText(toDoItem.getTitle());
// TODO - Set up Status CheckBox
final CheckBox statusView = (CheckBox) convertView.findViewById(R.id.statusCheckBox);
statusView.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
log("Entered onCheckedChanged()");
// TODO - Set up and implement an OnCheckedChangeListener, which
// is called when the user toggles the status checkbox
if(isChecked)
{
toDoItem.setStatus(Status.DONE);
}
else
{
toDoItem.setStatus(Status.NOTDONE);
}
}
});
//TODO - Display Priority in a TextView
final TextView priorityView = (TextView) convertView.findViewById(R.id.priorityView);
priorityView.setTag(toDoItem.getPriority());
// TODO - Display Time and Date.
// Hint - use ToDoItem.FORMAT.format(toDoItem.getDate()) to get date and time String
final TextView dateView = (TextView) convertView.findViewById(R.id.dateView);
dateView.setText(ToDoItem.FORMAT.format(toDoItem.getDate()));
// Return the View you just created
return itemLayout;
}
private void log(String msg) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.i(TAG, msg);
}
}
3- AddToDoActivity
package course.labs.todomanager;
import java.util.Calendar;
import java.util.Date;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.TimePickerDialog;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.TimePicker;
import course.labs.todomanager.ToDoItem.Priority;
import course.labs.todomanager.ToDoItem.Status;
public class AddToDoActivity extends Activity {
// 7 days in milliseconds - 7 * 24 * 60 * 60 * 1000
private static final int SEVEN_DAYS = 604800000;
private static final String TAG = "Lab-UserInterface";
private static String timeString;
private static String dateString;
private static TextView dateView;
private static TextView timeView;
private Date mDate;
private RadioGroup mPriorityRadioGroup;
private RadioGroup mStatusRadioGroup;
private EditText mTitleText;
private RadioButton mDefaultStatusButton;
private RadioButton mDefaultPriorityButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_todo);
mTitleText = (EditText) findViewById(R.id.title);
mDefaultStatusButton = (RadioButton) findViewById(R.id.statusNotDone);
mDefaultPriorityButton = (RadioButton) findViewById(R.id.medPriority);
mPriorityRadioGroup = (RadioGroup) findViewById(R.id.priorityGroup);
mStatusRadioGroup = (RadioGroup) findViewById(R.id.statusGroup);
dateView = (TextView) findViewById(R.id.date);
timeView = (TextView) findViewById(R.id.time);
// Set the default date and time
setDefaultDateTime();
// OnClickListener for the Date button, calls showDatePickerDialog() to show
// the Date dialog
final Button datePickerButton = (Button) findViewById(R.id.date_picker_button);
datePickerButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
showDatePickerDialog();
}
});
// OnClickListener for the Time button, calls showTimePickerDialog() to show
// the Time Dialog
final Button timePickerButton = (Button) findViewById(R.id.time_picker_button);
timePickerButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
showTimePickerDialog();
}
});
// OnClickListener for the Cancel Button,
final Button cancelButton = (Button) findViewById(R.id.cancelButton);
cancelButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered cancelButton.OnClickListener.onClick()");
//TODO - Implement onClick().
setResult(RESULT_CANCELED);
finish();
}
});
//OnClickListener for the Reset Button
final Button resetButton = (Button) findViewById(R.id.resetButton);
resetButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered resetButton.OnClickListener.onClick()");
//TODO - Reset data fields to default values
mTitleText.setText(R.id.title);
mPriorityRadioGroup = (RadioGroup) findViewById(R.id.priorityGroup);
mStatusRadioGroup = (RadioGroup) findViewById(R.id.statusGroup);
setDefaultDateTime();
}
});
// OnClickListener for the Submit Button
// Implement onClick().
final Button submitButton = (Button) findViewById(R.id.submitButton);
submitButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered submitButton.OnClickListener.onClick()");
// Gather ToDoItem data
//TODO - Get Priority
Priority priority = getPriority();
//TODO - Get Status
Status status = getStatus();
//TODO - Title
String titleString = mTitleText.getPrivateImeOptions();
// Date
String fullDate = dateString + " " + timeString;
// Package ToDoItem data into an Intent
Intent data = new Intent();
ToDoItem.packageIntent(data, titleString, priority, status, fullDate);
//TODO - return data Intent and finish
setResult(RESULT_OK);
finish();
}
});
}
// Do not modify below here
// Use this method to set the default date and time
private void setDefaultDateTime() {
// Default is current time + 7 days
mDate = new Date();
mDate = new Date(mDate.getTime() + SEVEN_DAYS);
Calendar c = Calendar.getInstance();
c.setTime(mDate);
setDateString(c.get(Calendar.YEAR), c.get(Calendar.MONTH),
c.get(Calendar.DAY_OF_MONTH));
dateView.setText(dateString);
setTimeString(c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE),
c.get(Calendar.MILLISECOND));
timeView.setText(timeString);
}
private static void setDateString(int year, int monthOfYear, int dayOfMonth) {
// Increment monthOfYear for Calendar/Date -> Time Format setting
monthOfYear++;
String mon = "" + monthOfYear;
String day = "" + dayOfMonth;
if (monthOfYear < 10)
mon = "0" + monthOfYear;
if (dayOfMonth < 10)
day = "0" + dayOfMonth;
dateString = year + "-" + mon + "-" + day;
}
private static void setTimeString(int hourOfDay, int minute, int mili) {
String hour = "" + hourOfDay;
String min = "" + minute;
if (hourOfDay < 10)
hour = "0" + hourOfDay;
if (minute < 10)
min = "0" + minute;
timeString = hour + ":" + min + ":00";
}
private Priority getPriority() {
switch (mPriorityRadioGroup.getCheckedRadioButtonId()) {
case R.id.lowPriority: {
return Priority.LOW;
}
case R.id.highPriority: {
return Priority.HIGH;
}
default: {
return Priority.MED;
}
}
}
private Status getStatus() {
switch (mStatusRadioGroup.getCheckedRadioButtonId()) {
case R.id.statusDone: {
return Status.DONE;
}
default: {
return Status.NOTDONE;
}
}
}
// DialogFragment used to pick a ToDoItem deadline date
public static class DatePickerFragment extends DialogFragment implements
DatePickerDialog.OnDateSetListener {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
final Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
// Create a new instance of DatePickerDialog and return it
return new DatePickerDialog(getActivity(), this, year, month, day);
}
#Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
setDateString(year, monthOfYear, dayOfMonth);
dateView.setText(dateString);
}
}
// DialogFragment used to pick a ToDoItem deadline time
public static class TimePickerFragment extends DialogFragment implements
TimePickerDialog.OnTimeSetListener {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
// Create a new instance of TimePickerDialog and return
return new TimePickerDialog(getActivity(), this, hour, minute,
true);
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
setTimeString(hourOfDay, minute, 0);
timeView.setText(timeString);
}
}
private void showDatePickerDialog() {
DialogFragment newFragment = new DatePickerFragment();
newFragment.show(getFragmentManager(), "datePicker");
}
private void showTimePickerDialog() {
DialogFragment newFragment = new TimePickerFragment();
newFragment.show(getFragmentManager(), "timePicker");
}
private void log(String msg) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.i(TAG, msg);
}
}
4- ToDoItem
package course.labs.todomanager;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import android.content.Intent;
// Do not modify
public class ToDoItem {
public static final String ITEM_SEP = System.getProperty("line.separator");
public enum Priority {
LOW, MED, HIGH
};
public enum Status {
NOTDONE, DONE
};
public final static String TITLE = "title";
public final static String PRIORITY = "priority";
public final static String STATUS = "status";
public final static String DATE = "date";
public final static String FILENAME = "filename";
public final static SimpleDateFormat FORMAT = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss", Locale.US);
private String mTitle = new String();
private Priority mPriority = Priority.LOW;
private Status mStatus = Status.NOTDONE;
private Date mDate = new Date();
ToDoItem(String title, Priority priority, Status status, Date date) {
this.mTitle = title;
this.mPriority = priority;
this.mStatus = status;
this.mDate = date;
}
// Create a new ToDoItem from data packaged in an Intent
ToDoItem(Intent intent) {
mTitle = intent.getStringExtra(ToDoItem.TITLE);
mPriority = Priority.valueOf(intent.getStringExtra(ToDoItem.PRIORITY));
mStatus = Status.valueOf(intent.getStringExtra(ToDoItem.STATUS));
try {
mDate = ToDoItem.FORMAT.parse(intent.getStringExtra(ToDoItem.DATE));
} catch (ParseException e) {
mDate = new Date();
}
}
public String getTitle() {
return mTitle;
}
public void setTitle(String title) {
mTitle = title;
}
public Priority getPriority() {
return mPriority;
}
public void setPriority(Priority priority) {
mPriority = priority;
}
public Status getStatus() {
return mStatus;
}
public void setStatus(Status status) {
mStatus = status;
}
public Date getDate() {
return mDate;
}
public void setDate(Date date) {
mDate = date;
}
// Take a set of String data values and
// package them for transport in an Intent
public static void packageIntent(Intent intent, String title,
Priority priority, Status status, String date) {
intent.putExtra(ToDoItem.TITLE, title);
intent.putExtra(ToDoItem.PRIORITY, priority.toString());
intent.putExtra(ToDoItem.STATUS, status.toString());
intent.putExtra(ToDoItem.DATE, date);
}
public String toString() {
return mTitle + ITEM_SEP + mPriority + ITEM_SEP + mStatus + ITEM_SEP
+ FORMAT.format(mDate);
}
public String toLog() {
return "Title:" + mTitle + ITEM_SEP + "Priority:" + mPriority
+ ITEM_SEP + "Status:" + mStatus + ITEM_SEP + "Date:"
+ FORMAT.format(mDate);
}
}
Can anybody help?

li.inflate(R.id.footerView, getListView());
You cannot inflate ids, only layouts.
Replace R.id.footerView with R.layout.your_footer_view_layout.
Also, you probably want to capture the inflated View to some variable to actually use it later.

Try this:
//Inflate footerView for footer_view.xml file
TextView footerView = (TextView) getLayoutInflater().inflate(R.layout.footer_view, null);

You should replace setTag(). Change
priorityView.setTag(toDoItem.getPriority());
to
priorityView.setText(toDoItem.getPriority().ToString());

Related

Hey guys again with my question
So as in the title, my apps need data from another activity using sharedPreferenced
So far so good I got the data I store WHEN I click the button but when i tried to get the data on the onCreate it just crashing with this error code:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.test.aplikasirevisi, PID: 28272
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test.aplikasirevisi/com.test.aplikasirevisi.Information}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2946)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3081)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1831)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:201)
at android.app.ActivityThread.main(ActivityThread.java:6810)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
at com.test.aplikasirevisi.Information.onCreate(Information.java:33)
at android.app.Activity.performCreate(Activity.java:7224)
at android.app.Activity.performCreate(Activity.java:7213)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1272)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2926)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3081) 
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1831) 
at android.os.Handler.dispatchMessage(Handler.java:106) 
at android.os.Looper.loop(Looper.java:201) 
at android.app.ActivityThread.main(ActivityThread.java:6810) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873) 
I/Process: Sending signal. PID: 28272 SIG: 9
It says it's null but when I click the button it's giving me the data though
Here is my code:
Information.Java
package com.test.aplikasirevisi;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import androidx.annotation.Nullable;
public class Information extends Activity {
SharedPreferences sharedpreferences;
TextView name;
TextView phonenum;
TextView highest;
TextView lowest;
public static final String mypreference = "mypref";
public static final String Name = "nameKey";
public static final String PhoneNum = "phonenumKey";
public static final String Highest = "highestKey";
public static final String Lowest = "lowestKey";
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.information);
sharedpreferences = getSharedPreferences(mypreference,
Context.MODE_PRIVATE);
if (sharedpreferences.contains(Name)) {
name.setText(sharedpreferences.getString(Name, ""));
}
if (sharedpreferences.contains(PhoneNum)) {
phonenum.setText(sharedpreferences.getString(PhoneNum, ""));
}
if (sharedpreferences.contains(Highest)) {
highest.setText(sharedpreferences.getString(Highest, ""));
}
if (sharedpreferences.contains(Lowest)) {
lowest.setText(sharedpreferences.getString(Lowest, ""));
}
}
public void Save(View view) {
String n = name.getText().toString();
String p = phonenum.getText().toString();
String h = highest.getText().toString();
String l = lowest.getText().toString();
SharedPreferences.Editor editor = sharedpreferences.edit();
editor.putString(Name, n);
editor.putString(PhoneNum, p);
editor.putString(Highest, h);
editor.putString(Lowest, l);
editor.commit();
}
public void clear(View view) {
name = (TextView) findViewById(R.id.etName);
phonenum = (TextView) findViewById(R.id.etPhoneNum);
highest = (TextView) findViewById(R.id.etHighest);
lowest = (TextView) findViewById(R.id.etLowest);
name.setText("");
phonenum.setText("");
highest.setText("");
lowest.setText("");
}
public void Get(View view) {
name = (TextView) findViewById(R.id.etName);
phonenum = (TextView) findViewById(R.id.etPhoneNum);
highest = (TextView) findViewById(R.id.etHighest);
lowest = (TextView) findViewById(R.id.etLowest);
sharedpreferences = getSharedPreferences(mypreference,
Context.MODE_PRIVATE);
if (sharedpreferences.contains(Name)) {
name.setText(sharedpreferences.getString(Name, ""));
}
if (sharedpreferences.contains(PhoneNum)) {
phonenum.setText(sharedpreferences.getString(PhoneNum, ""));
}
if (sharedpreferences.contains(Highest)) {
highest.setText(sharedpreferences.getString(Highest, ""));
}
if (sharedpreferences.contains(Lowest)) {
lowest.setText(sharedpreferences.getString(Lowest, ""));
}
}
}
MonitoringScreen.Java
package com.test.aplikasirevisi;
import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;
import android.app.Activity;
import android.app.ProgressDialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.method.ScrollingMovementMethod;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;
import static com.test.aplikasirevisi.Information.Highest;
import static com.test.aplikasirevisi.Information.Lowest;
import static com.test.aplikasirevisi.Information.mypreference;
public class MonitoringScreen extends Activity {
private static final String TAG = "BlueTest5-MainActivity";
private int mMaxChars = 50000;//Default
private UUID mDeviceUUID;
private BluetoothSocket mBTSocket;
private ReadInput mReadThread = null;
TextView highest;
TextView lowest;
private boolean mIsUserInitiatedDisconnect = false;
private TextView mTxtReceive;
private Button mBtnClearInput;
private Button mBtnGetBPM;
private ScrollView scrollView;
private CheckBox chkScroll;
private CheckBox chkReceiveText;
private boolean mIsBluetoothConnected = false;
private BluetoothDevice mDevice;
private ProgressDialog progressDialog;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_monitoring_screen);
ActivityHelper.initialize(this);
Intent intent = getIntent();
Bundle b = intent.getExtras();
mDevice = b.getParcelable(MainActivity.DEVICE_EXTRA);
mDeviceUUID = UUID.fromString(b.getString(MainActivity.DEVICE_UUID));
mMaxChars = b.getInt(MainActivity.BUFFER_SIZE);
Log.d(TAG, "Ready");
mTxtReceive = (TextView) findViewById(R.id.txtReceive);
chkScroll = (CheckBox) findViewById(R.id.chkScroll);
chkReceiveText = (CheckBox) findViewById(R.id.chkReceiveText);
scrollView = (ScrollView) findViewById(R.id.viewScroll);
mBtnClearInput = (Button) findViewById(R.id.btnClearInput);
mBtnGetBPM = (Button) findViewById(R.id.mBtnGetBPM);
mTxtReceive.setMovementMethod(new ScrollingMovementMethod());
mBtnClearInput.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
mTxtReceive.setText("");
}
});
mBtnGetBPM.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
highest = (TextView) findViewById(R.id.etHighest);
lowest = (TextView) findViewById(R.id.etLowest);
SharedPreferences sharedpreferences = getSharedPreferences(mypreference,
Context.MODE_PRIVATE);
if (sharedpreferences.contains(Highest)) {
highest.setText(sharedpreferences.getString(Highest, ""));
}
if (sharedpreferences.contains(Lowest)) {
lowest.setText(sharedpreferences.getString(Lowest, ""));
}
}
});
}
private class ReadInput implements Runnable{
private boolean bStop = false;
private Thread t;
public ReadInput() {
t = new Thread(this, "Input Thread");
t.start();
}
public boolean isRunning() {
return t.isAlive();
}
#Override
public void run() {
InputStream inputStream;
try {
inputStream = mBTSocket.getInputStream();
while (!bStop) {
byte[] buffer = new byte[256];
if (inputStream.available() > 0) {
inputStream.read(buffer);
int i;
/*
* This is needed because new String(buffer) is taking the entire buffer i.e. 256 chars on Android 2.3.4 http://stackoverflow.com/a/8843462/1287554
*/
for (i = 0; i < buffer.length && buffer[i] != 0; i++) {
}
final String strInput = new String(buffer, 0, i);
String getHi = null;
SharedPreferences sharedpreferences = getSharedPreferences(mypreference,
Context.MODE_PRIVATE);
if (sharedpreferences.contains(Highest)) {
highest.setText(sharedpreferences.getString(Highest, ""));
getHi=highest.getText().toString();
}
if (sharedpreferences.contains(Lowest)) {
lowest.setText(sharedpreferences.getString(Lowest, ""));
}
int hi = Integer.parseInt(getHi);
/*
* If checked then receive text, better design would probably be to stop thread if unchecked and free resources, but this is a quick fix
*/
if (chkReceiveText.isChecked()) {
mTxtReceive.post(new Runnable() {
#Override
public void run() {
int data = Integer.parseInt(strInput);
mTxtReceive.append(strInput);
int txtLength = mTxtReceive.getEditableText().length();
if(txtLength > mMaxChars){
mTxtReceive.getEditableText().delete(0, txtLength - mMaxChars);
Log.d(TAG, "text longer than allowed:" + mTxtReceive.getEditableText().delete(0, txtLength - mMaxChars));
Log.d(TAG, strInput);
if(data > hi){
Log.d(TAG, "Success");
}
}
if (chkScroll.isChecked()) { // Scroll only if this is checked
scrollView.post(new Runnable() { // Snippet from http://stackoverflow.com/a/4612082/1287554
#Override
public void run() {
scrollView.fullScroll(View.FOCUS_DOWN);
}
});
}
}
});
}
}
Thread.sleep(500);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void stop() {
bStop = true;
}
}
private class DisConnectBT extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
}
#Override
protected Void doInBackground(Void... params) {
if (mReadThread != null) {
mReadThread.stop();
while (mReadThread.isRunning())
; // Wait until it stops
mReadThread = null;
}
try {
mBTSocket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
mIsBluetoothConnected = false;
if (mIsUserInitiatedDisconnect) {
finish();
}
}
}
private void msg(String s) {
Toast.makeText(getApplicationContext(), s, Toast.LENGTH_SHORT).show();
}
#Override
protected void onPause() {
if (mBTSocket != null && mIsBluetoothConnected) {
new DisConnectBT().execute();
}
Log.d(TAG, "Paused");
super.onPause();
}
#Override
protected void onResume() {
if (mBTSocket == null || !mIsBluetoothConnected) {
new ConnectBT().execute();
}
Log.d(TAG, "Resumed");
super.onResume();
}
#Override
protected void onStop() {
Log.d(TAG, "Stopped");
super.onStop();
}
#Override
protected void onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);
}
private class ConnectBT extends AsyncTask<Void, Void, Void> {
private boolean mConnectSuccessful = true;
#Override
protected void onPreExecute() {
progressDialog = ProgressDialog.show(MonitoringScreen.this, "Hold on", "Connecting");// http://stackoverflow.com/a/11130220/1287554
}
#Override
protected Void doInBackground(Void... devices) {
try {
if (mBTSocket == null || !mIsBluetoothConnected) {
mBTSocket = mDevice.createInsecureRfcommSocketToServiceRecord(mDeviceUUID);
BluetoothAdapter.getDefaultAdapter().cancelDiscovery();
mBTSocket.connect();
}
} catch (IOException e) {
// Unable to connect to device
e.printStackTrace();
mConnectSuccessful = false;
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
if (!mConnectSuccessful) {
Toast.makeText(getApplicationContext(), "Could not connect to device. Is it a Serial device? Also check if the UUID is correct in the settings", Toast.LENGTH_LONG).show();
finish();
} else {
msg("Connected to device");
mIsBluetoothConnected = true;
mReadThread = new ReadInput(); // Kick off input reader
}
progressDialog.dismiss();
}
}
}
As you can see I tried to automatically get the Highest bpm dan Lowest bpm but it spans the same error so I'm in a pickle now so if anyone can help with it dan fast I'll be grateful for that. And sorry for my English it's not my first language so I can't express it really well.

The TextView in your Information.Java are not assigned to anything within your onCreate method before you try calling the setText method. This is what the error is complaining about.
Your assignments are in the clear(View view) method for some reason.... they should be in the onCreate method.
i.e move
name = (TextView) findViewById(R.id.etName);
phonenum = (TextView) findViewById(R.id.etPhoneNum);
highest = (TextView) findViewById(R.id.etHighest);
lowest = (TextView) findViewById(R.id.etLowest);
out of the clear and get methods and into the onCreate method like:
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.information);
name = (TextView) findViewById(R.id.etName);
phonenum = (TextView) findViewById(R.id.etPhoneNum);
highest = (TextView) findViewById(R.id.etHighest);
lowest = (TextView) findViewById(R.id.etLowest);
sharedpreferences = getSharedPreferences(mypreference,
Context.MODE_PRIVATE);
if (sharedpreferences.contains(Name)) {
name.setText(sharedpreferences.getString(Name, ""));
}
if (sharedpreferences.contains(PhoneNum)) {
phonenum.setText(sharedpreferences.getString(PhoneNum, ""));
}
if (sharedpreferences.contains(Highest)) {
highest.setText(sharedpreferences.getString(Highest, ""));
}
if (sharedpreferences.contains(Lowest)) {
lowest.setText(sharedpreferences.getString(Lowest, ""));
}
}

This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 5 years ago.
Hello I have 2 Activities, 2 apps each with their classes ( around 10 classes in total), which i want to combine. I have a functional alarm and an functional MediaPlayer. I want to start the mediaplayer when the time is to set off the alarm. The problem is my app crashes when it's time to ring.
The Media Player class:
package com.never.mediaalarmplayer;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.IBinder;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ListView;
import android.widget.MediaController;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
/**
* Created by Never on 5/14/2017.
*/
public class MediaPlayer extends AppCompatActivity implements MediaController.MediaPlayerControl {
private ArrayList<Song> songList;
private ListView songView;
private MusicService musicSrv;
private Intent playIntent;
private boolean musicBound=false;
private MusicController controller;
private boolean paused=false, playbackPaused=false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mediaplayer);
songView = (ListView)findViewById(R.id.song_list);
songList = new ArrayList<>();
getSongList();
Collections.sort(songList, new Comparator<Song>(){
public int compare(Song a, Song b){
return a.getTitle().compareTo(b.getTitle());
}
});
SongAdapter songAdt = new SongAdapter(this, songList);
songView.setAdapter(songAdt);
setController();
Button btn = (Button)findViewById(R.id.open_alarm);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(MediaPlayer.this, Alarm.class));
}
});
}
//connect to the service
private ServiceConnection musicConnection = new ServiceConnection(){
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
MusicService.MusicBinder binder = (MusicService.MusicBinder)service;
//get service
musicSrv = binder.getService();
//pass list
musicSrv.setList(songList);
musicBound = true;
}
#Override
public void onServiceDisconnected(ComponentName name) {
musicBound = false;
}
};
#Override
protected void onStart() {
super.onStart();
if(playIntent==null){
playIntent = new Intent(this, MusicService.class);
bindService(playIntent, musicConnection, Context.BIND_AUTO_CREATE);
startService(playIntent);
}
}
#Override
protected void onPause(){
super.onPause();
paused=true;
}
#Override
protected void onResume(){
super.onResume();
if(paused){
setController();
paused=false;
}
}
#Override
protected void onStop(){
controller.hide();
super.onStop();
}
public void songPicked(View view){
musicSrv.setSong(Integer.parseInt(view.getTag().toString()));
musicSrv.playSong();
if(playbackPaused){
setController();
playbackPaused=false;
}
controller.show(0);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
//menu item selected
switch (item.getItemId()) {
case R.id.action_shuffle:
//shuffle
musicSrv.setShuffle();
break;
case R.id.action_end:
stopService(playIntent);
musicSrv=null;
System.exit(0);
break;
}
return super.onOptionsItemSelected(item);
}
#Override
protected void onDestroy() {
stopService(playIntent);
musicSrv=null;
super.onDestroy();
}
public void getSongList() {
//retrieve song info
ContentResolver musicResolver = getContentResolver();
Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor musicCursor = musicResolver.query(musicUri, null, null, null, null);
if(musicCursor!=null && musicCursor.moveToFirst()){
//get columns
int titleColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media.TITLE);
int idColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media._ID);
int artistColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media.ARTIST);
//add songs to list
do {
long thisId = musicCursor.getLong(idColumn);
String thisTitle = musicCursor.getString(titleColumn);
String thisArtist = musicCursor.getString(artistColumn);
songList.add(new Song(thisId, thisTitle, thisArtist));
}
while (musicCursor.moveToNext());
}
}
private void setController(){
//set the controller up
controller = new MusicController(this);
controller.setPrevNextListeners(new View.OnClickListener() {
#Override
public void onClick(View v) {
playNext();
}
}, new View.OnClickListener(){
#Override
public void onClick(View v){
playPrev();
}
});
controller.setMediaPlayer(this);
controller.setAnchorView(findViewById(R.id.song_list));
controller.setEnabled(true);
}
//play next
private void playNext(){
musicSrv.playNext();
if(playbackPaused){
setController();
playbackPaused=false;
}
controller.show(0);
}
//play prev
private void playPrev(){
musicSrv.playPrev();
if(playbackPaused) {
setController();
playbackPaused = false;
}
controller.show(0);
}
#Override
public void start() {
musicSrv.go();
}
#Override
public void pause() {
playbackPaused=true;
musicSrv.pausePlayer();;
}
#Override
public int getDuration() {
if(musicSrv!=null &&musicBound&&musicSrv.isPng())
return musicSrv.getDur();
else
return 0;
}
#Override
public int getCurrentPosition() {
if(musicSrv!=null&&musicBound&&musicSrv.isPng())
return musicSrv.getPosn();
else
return 0;
}
#Override
public void seekTo(int pos) {
musicSrv.seek(pos);
}
#Override
public boolean isPlaying() {
if(musicSrv!=null&&musicBound)
return musicSrv.isPng();
else
return false;
}
#Override
public int getBufferPercentage() {
return 0;
}
#Override
public boolean canPause() {
return true;
}
#Override
public boolean canSeekBackward() {
return true;
}
#Override
public boolean canSeekForward() {
return true;
}
#Override
public int getAudioSessionId() {
return 0;
}
}
Alarm Receiver class:
package com.never.mediaalarmplayer;
import android.content.Context;
import android.content.Intent;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.support.v4.content.WakefulBroadcastReceiver;
/**
* Created by Never on 4/29/2017.
*/
public class AlarmReceiver extends WakefulBroadcastReceiver{
private static Ringtone ringtone = null;
#Override
public void onReceive(Context context, Intent intent) {
Alarm.getTextView2().setText("It's time to wake up!");
Uri uri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
ringtone = RingtoneManager.getRingtone(context, uri);
// ringtone.play();
MediaPlayer ms = new MediaPlayer();
ms.onStart();
}
public static void stopRingtone() {
ringtone.stop();
}
}
And the Alarm class:
package com.never.mediaalarmplayer;
import android.annotation.TargetApi;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Build;
import android.os.Message;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.view.View.OnClickListener;
import java.util.Calendar;
public class Alarm extends AppCompatActivity {
private static int timeHour = Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
private static int timeMinute = Calendar.getInstance().get(Calendar.MINUTE);
TextView textView1;
private static TextView textView2;
public static TextView getTextView2(){
return textView2;
}
AlarmManager alarmManager;
private PendingIntent pendingIntent;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setam layoutul pe care ne uitam si pe care lucram
setContentView(R.layout.activity_alarm);
// spunem ca textView1 este textviewul cu id-ul msg1
textView1 = (TextView)findViewById(R.id.msg1);
// afisam ora curenta
if(timeHour>9&&timeMinute>9)
textView1.setText(timeHour + ":" + timeMinute);
else if(timeHour>9&&timeMinute<=9)
textView1.setText(timeHour + ":" + "0" + timeMinute);
else if(timeHour<=9&&timeMinute>9)
textView1.setText("0" + timeHour + ":" + timeMinute);
else if(timeHour<=9&&timeMinute<=9)
textView1.setText("0" + timeHour + ":" + "0" + timeMinute);
textView2 = (TextView) findViewById(R.id.msg2);
alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
Intent myIntent = new Intent (Alarm.this,AlarmReceiver.class);
pendingIntent = PendingIntent.getBroadcast(Alarm.this,0,myIntent,0);
OnClickListener listener1 = new OnClickListener(){
#Override
public void onClick(View v) {
textView2.setText("");
Bundle bundle = new Bundle();
bundle.putInt(MyConstants.HOUR, timeHour);
bundle.putInt(MyConstants.MINUTE, timeMinute);
MyDialogFragment fragment = new MyDialogFragment(new MyHandler());
fragment.setArguments(bundle);
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.add(fragment, MyConstants.TIME_PICKER);
transaction.commit();
}
};
Button btn1 = (Button)findViewById(R.id.button1);
btn1.setOnClickListener(listener1);
OnClickListener listener2 = new OnClickListener() {
#Override
public void onClick(View v) {
textView2.setText("");
cancelAlarm();
}
};
Button btn2 = (Button)findViewById(R.id.button2);
btn2.setOnClickListener(listener2);
Button btn = (Button)findViewById(R.id.open_mp);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(Alarm.this, MediaPlayer.class));
}
});
}
//A Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue.
//There are two main uses for a Handler: (1) to schedule messages and runnables to be executed as some point in the future; and (2) to enqueue an action to be performed on a different thread than your own.
//Practic folosim un handler pentru a afisa ora la care am setat alarma dupa ce am setat-o
class MyHandler extends Handler
{
#Override
public void handleMessage (Message msg){
//A mapping from String keys to various Parcelable values.
//Bundle getBundle (String key)
//Returns the value associated with the given key, or null if no mapping of the desired type exists for the given key or a null value is explicitly associated with the key.
Bundle bundle = msg.getData();
//preluam ora si minutul la care am setat alarma
timeHour=bundle.getInt(MyConstants.HOUR);
timeMinute = bundle.getInt(MyConstants.MINUTE);
//afisam ora la care am setat alarma
if(timeHour>9&&timeMinute>9)
textView1.setText(timeHour + ":" + timeMinute);
else if(timeHour>9&&timeMinute<=9)
textView1.setText(timeHour + ":" + "0" + timeMinute);
else if(timeHour<=9&&timeMinute>9)
textView1.setText("0" + timeHour + ":" + timeMinute);
else if(timeHour<=9&&timeMinute<=9)
textView1.setText("0" + timeHour + ":" + "0" + timeMinute);
setAlarm();
}
}
#TargetApi(Build.VERSION_CODES.KITKAT)
private void setAlarm(){
// getInstance()
//Gets a calendar using the default time zone and locale.
Calendar calendar = Calendar.getInstance();
// set(int field, int value)
// Sets the given calendar field to the given value.
calendar.set(Calendar.HOUR_OF_DAY,timeHour);
calendar.set(Calendar.MINUTE,timeMinute);
// setExact(int type, long triggerAtMillis, PendingIntent operation)
// Schedules the alarm and if there is already an alarm by the intent then previous one will be canceled.
//RTC_WAKEUP
//It is used to fire pending intent at specified time forcing the phone to wake up.
//Practic prin linia asta de cod setam alarma si verificam daca ora curenta este egala cu ora programata pentru trezire si in caz afirmativ trimitem semnalul(pendingintent) ce este legat la intent astfel stim ca trebuie trimis catre AlarmRceiver, in acelasi timp ii spunem sa "trezeasca" telefonul
alarmManager.setExact(
//ii spunem sa "trezeasca telefonul" in cazul in care trebuie sa sune alarma
AlarmManager.RTC_WAKEUP,
// preluam ora la care setam alarma si retinem totul transformat in milisecunde
calendar.getTimeInMillis(),
//verificam daca este timpul sa sunam alarma
pendingIntent);
}
private void cancelAlarm(){
if(alarmManager!=null){
alarmManager.cancel(pendingIntent);
pendingIntent.cancel();
AlarmReceiver.stopRingtone();
}
}
}
The Exception:
07-11 10:43:43.392 1915-1915/com.never.mediaalarmplayer D/Ringtone: Successfully created local player
07-11 10:43:43.397 1915-1915/com.never.mediaalarmplayer D/AndroidRuntime: Shutting down VM
07-11 10:43:43.397 1915-1915/com.never.mediaalarmplayer E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.never.mediaalarmplayer, PID: 1915
java.lang.RuntimeException: Unable to start receiver com.never.mediaalarmplayer.AlarmReceiver: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.Application.dispatchActivityStarted(android.app.Activity)' on a null object reference
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2732)
at android.app.ActivityThread.-wrap14(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1421)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.Application.dispatchActivityStarted(android.app.Activity)' on a null object reference
at android.app.Activity.onStart(Activity.java:1146)
at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:595)
at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:178)
at com.never.mediaalarmplayer.MediaPlayer.onStart(MediaPlayer.java:78)
at com.never.mediaalarmplayer.AlarmReceiver.onReceive(AlarmReceiver.java:23)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2725)
at android.app.ActivityThread.-wrap14(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1421) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5417) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
It is my first time posting so if there is any problem with the post i will edit it also thank you very much.

Acitivities are not started like this as you are doing in your AlarmReceiver class's onReceive i.e.
MediaPlayer ms = new MediaPlayer();
They are started by Context.startActivity (Intent). It is android system which is supposed to start the activities as it manages a stack of activities and posts life-cycle callbacks for the them. Since you start activity yourself so you miss the initial life cycle callbacks e. g. onCreate.

This question already has answers here:
Best way to parseDouble with comma as decimal separator?
(10 answers)
Android NumberFormatException: Invalid Double - except the value is a valid Double
(2 answers)
Closed 6 years ago.
Android studio noti this error.This code by a main screen of quiz game
How to fix it??? i was try some guide but nothing
This is My error
E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.NumberFormatException: Invalid double: "86,24"
at java.lang.StringToReal.invalidReal(StringToReal.java:63)
at java.lang.StringToReal.parseDouble(StringToReal.java:269)
at java.lang.Double.parseDouble(Double.java:295)
at gt.scratchgame.MainActivity.checkAns(MainActivity.java:345)
at gt.scratchgame.MainActivity.onClick(MainActivity.java:318)
at android.view.View.performClick(View.java:4084)
at android.view.View$PerformClick.run(View.java:16966)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
My activity
package gt.scratchgame;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Typeface;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.androidquery.AQuery;
import com.androidquery.callback.AjaxCallback;
import com.androidquery.callback.AjaxStatus;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import com.startapp.android.publish.StartAppAd;
import com.startapp.android.publish.StartAppSDK;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import gt.scratchgame.base.Session;
import gt.scratchgame.bean.AnsOptionBean;
import gt.scratchgame.bean.BeanEachQuetionScore;
import gt.scratchgame.bean.QuestionAnsbean;
import gt.scratchgame.constants.AppConstants;
import gt.scratchgame.database.DBhelper;
public class MainActivity extends ActionBarActivity implements View.OnClickListener {
private WScratchView scratchView;
private TextView percentageView, scorelabel, textViewNo, textViewcounter, textViewTotalScore, textView3;
private float mPercentage;
public DBhelper dbhelper;
AQuery aQuery;
private static QuestionAnsbean questionAnsbean1;
private static String trueAns = null;
private static int quetionNumber = 0;
protected Button gameActivityButton1, gameActivityButton2, gameActivityButton3, gameActivityButton4;
ImageView imageView;
Session session;
Bitmap bitmap;
Typeface typeface;
private static float totalScore = 0;
public List<QuestionAnsbean> questionAnsList;
private List<BeanEachQuetionScore> scoreList;
ProgressDialog dialog;
private StartAppAd startAppAd;
AdView mAdView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAdView = (AdView) findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
}
#Override
protected void onResume() {
super.onResume();
questionAnsList = new ArrayList<QuestionAnsbean>();
startAppAd = new StartAppAd(this);
aQuery = new AQuery(this);
session = Session.getInstance();
bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.scratchview1);
scoreList = new ArrayList<BeanEachQuetionScore>();
scratchView = (WScratchView) findViewById(R.id.scratch_view);
scratchView.setScratchBitmap(bitmap);
typeface = Typeface.createFromAsset(getAssets(),"customestyle.TTF");
totalScore = 0;
quetionNumber = 0;
dialog = new ProgressDialog(this);
initDialogProperty();
asyncJson();
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
StartAppSDK.init(this, AppConstants.DEVELOPER_ID, AppConstants.APP_ID, true);
// StartAppAd.showSlider(this);
startAppAd.showAd();
}
private void initDialogProperty() {
dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
dialog.setIndeterminate(false);
dialog.setCancelable(false);
dialog.setMessage("Loading...");
}
private void initUI() {
percentageView = (TextView) findViewById(R.id.percentage);
percentageView.setTypeface(typeface);
scorelabel = (TextView) findViewById(R.id.scorelabel);
scorelabel.setTypeface(typeface);
textViewNo = (TextView) findViewById(R.id.textViewNo);
textViewNo.setTypeface(typeface);
textViewcounter = (TextView) findViewById(R.id.textViewcounter);
textViewcounter.setTypeface(typeface);
textViewTotalScore = (TextView) findViewById(R.id.textViewTotalScore);
textViewTotalScore.setTypeface(typeface);
textViewTotalScore.setText(totalScore + "");
textView3 = (TextView) findViewById(R.id.textView3);
textView3.setTypeface(typeface);
dbhelper = DBhelper.getInstance(getApplicationContext());
dbhelper.open();
initDb();
Collections.shuffle(questionAnsList);
/*Game Activity 4 option button*/
gameActivityButton1 = (Button) findViewById(R.id.gameActivityButton1);
gameActivityButton2 = (Button) findViewById(R.id.gameActivityButton2);
gameActivityButton3 = (Button) findViewById(R.id.gameActivityButton3);
gameActivityButton4 = (Button) findViewById(R.id.gameActivityButton4);
gameActivityButton1.setTypeface(typeface);
gameActivityButton2.setTypeface(typeface);
gameActivityButton3.setTypeface(typeface);
gameActivityButton4.setTypeface(typeface);
gameActivityButton1.setOnClickListener(this);
gameActivityButton2.setOnClickListener(this);
gameActivityButton3.setOnClickListener(this);
gameActivityButton4.setOnClickListener(this);
quetionInitialize();
// customize attribute programmatically
scratchView.setScratchable(true);
scratchView.setRevealSize(50);
scratchView.setAntiAlias(true);
// scratchView.setOverlayColor(Color.RED);
scratchView.setBackgroundClickable(true);
// add callback for update scratch percentage
scratchView.setOnScratchCallback(new WScratchView.OnScratchCallback() {
#Override
public void onScratch(float percentage) {
updatePercentage(percentage);
}
#Override
public void onDetach(boolean fingerDetach) {
/* if(mPercentage > 1){
scratchView.setScratchAll(true);
updatePercentage(100);
}*/
}
});
updatePercentage(0f);
}
private void updatePercentage(float percentage) {
mPercentage = percentage;
String percentage2decimal = String.format("%.2f", (100 - percentage));
percentageView.setText(percentage2decimal);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
/* #Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}*/
private void initDb() {
// Toast.makeText(getApplicationContext()," DB size-- "+dbhelper.getUserData().size(),Toast.LENGTH_LONG).show();
// dbhelper.addData(session.getSelectedCategory().id,"guru",123.36f);
}
public void asyncJson() {
// String url = "http://gurutechnolabs.com/demo/kids/demo.php?category=+""&level=level";
// Toast.makeText(getApplicationContext(),"aaaaaa",Toast.LENGTH_LONG).show();
int id = session.getSelectedCategory().id;
dialog.show();
String url = "http://8chan.biz/app/demo.php?category="+id;
Log.d("*************",url);
aQuery.ajax(url, JSONObject.class, new AjaxCallback<JSONObject>() {
#Override
public void callback(String url, JSONObject json, AjaxStatus status) {
if (json != null) {
try {
JSONObject mainJsonObject = new JSONObject(json.toString());
if(mainJsonObject != null)
{
JSONArray list = mainJsonObject.getJSONArray("data");
if(list != null)
{
for(int i = 0 ; i < list.length() ; i++)
{
JSONObject subObject = list.getJSONObject(i);
// aQuery.id(R.id.result).visible().text(subObject.toString());
QuestionAnsbean questionAnsbean = new QuestionAnsbean();
questionAnsbean.id = subObject.getInt("id");
questionAnsbean.cat_id = subObject.getInt("cat_id");
questionAnsbean.url = subObject.getString("url");
JSONArray questionAnsOptionArrary = subObject.getJSONArray("answers");
for (int j = 0; j < questionAnsOptionArrary.length(); j++)
{
JSONObject suObject1 = questionAnsOptionArrary.getJSONObject(j);
AnsOptionBean ansOptionBean = new AnsOptionBean();
ansOptionBean.answer = suObject1.getString("answer");
ansOptionBean.result = suObject1.getInt("result");
questionAnsbean.ansOptionList.add(ansOptionBean);
}
questionAnsList.add(questionAnsbean);
// session.setOperationLists1(questionAnsbean);
// Toast.makeText(getApplicationContext(),levelLists.size()+"",Toast.LENGTH_LONG).show();
//gameLevelGridAdapter.notifyDataSetChanged();
}
// Collections.shuffle(ansOptionList);
}
// Toast.makeText(getApplicationContext(),questionAnsList.size()+" This is list size in asin aquery ",Toast.LENGTH_LONG).show();
initUI();
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//Toast.makeText(getApplicationContext(), listItem.size()+"", Toast.LENGTH_LONG).show();
//showResult(json, status);
} else {
// ajax error, show error code
/* Toast.makeText(aQuery.getContext(),
"Error:" + status.getMessage(), Toast.LENGTH_LONG)
.show();*/
}
}
});
}
private void quetionInitialize() {
scratchView.resetView();
scratchView.setScratchAll(false);
textViewcounter.setText(quetionNumber+"");
questionAnsbean1 = new QuestionAnsbean();
questionAnsbean1 = questionAnsList.get(quetionNumber);
dialog.dismiss();
aQuery.id(R.id.extra).progress(dialog).image(questionAnsList.get(quetionNumber).url, true, true);
ansOptionInitialize();
}
/*Quation ans intialize and set*/
private void ansOptionInitialize() {
try {
Collections.shuffle(questionAnsbean1.ansOptionList);
gameActivityButton1.setText(questionAnsbean1.ansOptionList.get(0).answer);
gameActivityButton2.setText(questionAnsbean1.ansOptionList.get(1).answer);
gameActivityButton3.setText(questionAnsbean1.ansOptionList.get(2).answer);
gameActivityButton4.setText(questionAnsbean1.ansOptionList.get(3).answer);
if(questionAnsbean1.ansOptionList.get(0).result == 1)
{
trueAns = questionAnsbean1.ansOptionList.get(0).answer;
}
else if(questionAnsbean1.ansOptionList.get(1).result == 1)
{
trueAns = questionAnsbean1.ansOptionList.get(1).answer;
}
else if(questionAnsbean1.ansOptionList.get(2).result == 1)
{
trueAns = questionAnsbean1.ansOptionList.get(2).answer;
}
else if(questionAnsbean1.ansOptionList.get(3).result == 1)
{
trueAns = questionAnsbean1.ansOptionList.get(3).answer;
}
}
catch (Exception e)
{
}
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.gameActivityButton1:
checkAns(gameActivityButton1.getText().toString());
break;
case R.id.gameActivityButton2:
checkAns(gameActivityButton2.getText().toString());
break;
case R.id.gameActivityButton3:
checkAns(gameActivityButton3.getText().toString());
break;
case R.id.gameActivityButton4:
checkAns(gameActivityButton4.getText().toString());
break;
default:
break;
}
}
private void checkAns(String text) {
BeanEachQuetionScore beanEachQuetionScore = new BeanEachQuetionScore();
beanEachQuetionScore.quetionNo = quetionNumber;
beanEachQuetionScore.url = questionAnsList.get(quetionNumber).url;
beanEachQuetionScore.playerAns = text;
beanEachQuetionScore.trueAns = trueAns;
beanEachQuetionScore.quetionScore = Double.parseDouble(percentageView.getText().toString());
scoreList.add(beanEachQuetionScore);
if (text.equals(trueAns)) {
totalScore = totalScore + Float.parseFloat(percentageView.getText().toString());
textViewTotalScore.setText(String.format("%.2f", totalScore));
quetionNumber++;
if(quetionNumber < questionAnsList.size()) {
quetionInitialize();
}
else {
gameOver();
}
}
else {
totalScore = totalScore - Float.parseFloat(percentageView.getText().toString());
textViewTotalScore.setText(String.format("%.2f", totalScore));
quetionNumber++;
if(quetionNumber < questionAnsList.size()) {
quetionInitialize();
}
else {
gameOver();
}
}
}
private void gameOver() {
session.setScoreBeen(scoreList);
session.setTotalScoreInSession(Float.parseFloat(textViewTotalScore.getText().toString()));
Intent intent = new Intent(getApplicationContext(),ScoreBord.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
}
#Override
public void onBackPressed() {
super.onBackPressed();
Intent intent = new Intent(getApplicationContext(),SelectCategoryActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
}
}

Your issue actually brings up a larger issue that is especially relevant when developing a mobile app: Locale. Rather than use Double.parse(), which does not take Locale into account, consider using NumberFormat instead.
NumberFormat nf = NumberFormat.getInstance(); //gets an instance with the default Locale
Number parsed = nf.parse(percentageView.getText().toString());
beanEachQuetionScore.quetionScore = parsed.doubleValue();
For your float values, you can use the same concept:
Number parsedFloat = nf.parse(someFloatString);
float floatVal = parsedFloat.floatValue();
This of course assumes that OP is in a Locale that uses ',' instead of '.' as a separator.

My app getting crash when I try to set the time more than the current time.
Please solve my problem.
The current time is working fine but the app is crashing when I select time more than current time.
Thanks
JavaFile:
package com.example.akshay.eventmanager;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.content.Intent;
import android.hardware.input.InputManager;
import android.os.Bundle;
import android.text.InputType;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.TimePicker;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.widget.Toast;
import com.google.android.gms.common.GooglePlayServicesNotAvailableException;
import com.google.android.gms.common.GooglePlayServicesRepairableException;
import com.google.android.gms.location.places.Place;
import com.google.android.gms.location.places.ui.PlacePicker;
import com.google.android.gms.maps.model.LatLng;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import java.util.TimeZone;
import android.app.DatePickerDialog.OnDateSetListener;
/**
* Created by Akshay on 7/12/2015.
*/
public class Create extends Activity implements View.OnClickListener {
Button select, create;
EditText title, desc, time;
TextView venueInfo;
PlacePicker.IntentBuilder intentBuilder;
private static final int PLACE_PICKER_REQUEST = 1;
public LatLng gotLatLng;
String placeName;
String plName;
String Addr;
Double gotLat, gotLong;
String LAT, LONG;
DataBaseHelper myDB;
public static final String LOG_TAG = "Create";
String GotTime = " ";
String GotDate = " ";
DatePickerDialog datePicker;
TimePickerDialog myTimePicker;
SimpleDateFormat dateFormatter;
SimpleDateFormat TimeFormatter;
static boolean flag = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.create);
dateFormatter = new SimpleDateFormat("EEEE dd" ,Locale.US);
showDate();
showTime();
casting();
}
public void casting() {
select = (Button) findViewById(R.id.bSelect);
create = (Button) findViewById(R.id.bCreate);
title = (EditText) findViewById(R.id.etTitle);
desc = (EditText) findViewById(R.id.etDescription);
time = (EditText) findViewById(R.id.etTime);
venueInfo = (TextView) findViewById(R.id.tVVenue);
time.setInputType(InputType.TYPE_NULL);
select.setOnClickListener(this);
create.setOnClickListener(this);
time.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId())
{
case R.id.bSelect:
try {
intentBuilder = new PlacePicker.IntentBuilder();
Intent intent = intentBuilder.build(Create.this);
startActivityForResult(intent, PLACE_PICKER_REQUEST);
} catch (GooglePlayServicesRepairableException e) {
e.printStackTrace();
} catch (GooglePlayServicesNotAvailableException e) {
Toast.makeText(Create.this, "Google Play Services is not available.",
Toast.LENGTH_LONG)
.show();
}
break;
case R.id.bCreate:
String TITLE = title.getText().toString();
String DESC = desc.getText().toString();
String eventTime = time.getText().toString();
String PLACE = venueInfo.getText().toString();
myDB = new DataBaseHelper(this);
Log.e(LOG_TAG, TITLE);
Log.e(LOG_TAG, DESC);
Log.e(LOG_TAG, PLACE);
Log.e(LOG_TAG, LAT);
Log.e(LOG_TAG, LONG);
Log.e(LOG_TAG, Addr);
Log.e(LOG_TAG, eventTime);
int flag = myDB.InsertValues(TITLE, DESC, PLACE, LAT, LONG, Addr, eventTime);
if (flag == 1) {
Toast.makeText(Create.this, "Sucess", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(Create.this, "Error Adding Records", Toast.LENGTH_LONG).show();
}
break;
case R.id.etTime:
myTimePicker.show();
datePicker.show();
break;
}
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == PLACE_PICKER_REQUEST) {
if (resultCode == RESULT_OK) {
Place place = PlacePicker.getPlace(data, this);
gotLatLng = place.getLatLng();
plName = (String) place.getName();
Addr = (String) place.getAddress();
gotLat = gotLatLng.latitude;
gotLong = gotLatLng.longitude;
LAT = String.valueOf(gotLat);
LONG = String.valueOf(gotLong);
placeName = String.format("Place: %s", place.getName());
Toast.makeText(this, placeName, Toast.LENGTH_LONG).show();
venueInfo.setText(plName);
}
}
}
public void showDate() {
Calendar cal = Calendar.getInstance();
datePicker = new DatePickerDialog(this, new OnDateSetListener() {
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth ) {
Calendar newDate = Calendar.getInstance();
newDate.set(year, monthOfYear, dayOfMonth);
GotDate = dateFormatter.format(newDate.getTime()).toString();
}
}, cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_WEEK));
flag =true;
}
public void showTime() {
if(flag == true) {
Calendar calender = Calendar.getInstance();
myTimePicker = new TimePickerDialog(this, new OnTimeSetListener() {
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
Calendar newTime = Calendar.getInstance();
newTime.set(hourOfDay, minute);
GotTime = GotDate + " At " + String.valueOf(hourOfDay) + " :" + String.valueOf(minute + 1);
time.setText(GotTime);
}
}, calender.get((Calendar.HOUR_OF_DAY)), calender.get(Calendar.MINUTE), true);
}
}
}
LogCat:
07-13 16:43:10.468 478-478/com.example.akshay.eventmanager E/Zygote﹕ MountEmulatedStorage()
07-13 16:43:10.468 478-478/com.example.akshay.eventmanager E/Zygote﹕ v2
07-13 16:43:10.468 478-478/com.example.akshay.eventmanager E/SELinux﹕ [DEBUG] get_category: variable seinfo: default sensitivity: NULL, cateogry: NULL
07-13 16:43:29.338 478-478/com.example.akshay.eventmanager E/ViewRootImpl﹕ sendUserActionEvent() mView == null
07-13 16:43:31.088 478-478/com.example.akshay.eventmanager E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.akshay.eventmanager, PID: 478
java.lang.ArrayIndexOutOfBoundsException: length=17; index=17
at java.util.Calendar.set(Calendar.java:1122)
at com.example.akshay.eventmanager.Create$2.onTimeSet(Create.java:196)
at android.app.TimePickerDialog.onClick(TimePickerDialog.java:204)
at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:162)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5972)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)

Set the time in calendar in showTime() method as follows:
public void showTime() {
if(flag == true) {
Calendar calender = Calendar.getInstance();
myTimePicker = new TimePickerDialog(this, new OnTimeSetListener() {
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
Calendar newTime = Calendar.getInstance();
//newTime.set(hourOfDay, minute); // remove this line
//Add these two line
newTime.set(Calendar.HOUR_OF_DAY, hourOfDay);
newTime.set(Calendar.MINUTE, minute);
GotTime = GotDate + " At " + String.valueOf(hourOfDay) + " :" + String.valueOf(minute + 1);
time.setText(GotTime);
}
}, calender.get((Calendar.HOUR_OF_DAY)), calender.get(Calendar.MINUTE), true);
}
}
EDIT:
To get HourOdDay in am/pm you can do something like this:
String format = "hh:mm a"; // your own format
SimpleDateFormat sdf = new SimpleDateFormat(format, Locale.US);
String formated_time = sdf.format(newTime.getTime());
//formated_time would show you time like "hh:mm am/pm".

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I have a UI Lab for Android Programming that I'm trying to complete. I think I'm close, yet so far away. I have four activities that I'm working with but only three of them needed worked on. Here is what I have. I need help with what I'm missing.
Here's the first Activity which is AddToDoActivity
package course.labs.todomanager;
import java.util.Calendar;
import java.util.Date;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.TimePickerDialog;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.TimePicker;
import course.labs.todomanager.ToDoItem.Priority;
import course.labs.todomanager.ToDoItem.Status;
public class AddToDoActivity extends Activity {
// 7 days in milliseconds - 7 * 24 * 60 * 60 * 1000
private static final int SEVEN_DAYS = 604800000;
private static final String TAG = "Lab-UserInterface";
private static String timeString;
private static String dateString;
private static TextView dateView;
private static TextView timeView;
private Date mDate;
private RadioGroup mPriorityRadioGroup;
private RadioGroup mStatusRadioGroup;
private EditText mTitleText;
private RadioButton mDefaultStatusButton;
private RadioButton mDefaultPriorityButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_todo);
mTitleText = (EditText) findViewById(R.id.title);
mDefaultStatusButton = (RadioButton) findViewById(R.id.statusNotDone);
mDefaultPriorityButton = (RadioButton) findViewById(R.id.medPriority);
mPriorityRadioGroup = (RadioGroup) findViewById(R.id.priorityGroup);
mStatusRadioGroup = (RadioGroup) findViewById(R.id.statusGroup);
dateView = (TextView) findViewById(R.id.date);
timeView = (TextView) findViewById(R.id.time);
// Set the default date and time
setDefaultDateTime();
// OnClickListener for the Date button, calls showDatePickerDialog() to show
// the Date dialog
final Button datePickerButton = (Button) findViewById(R.id.date_picker_button);
datePickerButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
showDatePickerDialog();
}
});
// OnClickListener for the Time button, calls showTimePickerDialog() to show
// the Time Dialog
final Button timePickerButton = (Button) findViewById(R.id.time_picker_button);
timePickerButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
showTimePickerDialog();
}
});
// OnClickListener for the Cancel Button,
final Button cancelButton = (Button) findViewById(R.id.cancelButton);
cancelButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered cancelButton.OnClickListener.onClick()");
//TODO - Implement onClick().
Intent intent = new Intent setResult;
finish();
}
});
//OnClickListener for the Reset Button
final Button resetButton = (Button) findViewById(R.id.resetButton);
resetButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered resetButton.OnClickListener.onClick()");
//TODO - Reset data fields to default values
setDefaultDateTime();
mTitleText.setText("");
mDefaultStatusButton.setChecked(true);
mDefaultPriorityButton.setChecked(true);
}
});
// OnClickListener for the Submit Button
// Implement onClick().
final Button submitButton = (Button) findViewById(R.id.submitButton);
submitButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered submitButton.OnClickListener.onClick()");
// Gather ToDoItem data
//TODO - Get Priority
Priority priority = getPriority();
//TODO - Get Status
Status status = getStatus();
//TODO - Title
String titleString = mTitleText.getText().toString();
// Date
String fullDate = dateString + " " + timeString;
// Package ToDoItem data into an Intent
Intent data = new Intent();
ToDoItem.packageIntent(data, titleString, priority, status, fullDate);
//TODO - return data Intent and finish
setResult(Activity.RESULT_OK, data);
finish();
}
});
}
// Do not modify below here
// Use this method to set the default date and time
private void setDefaultDateTime() {
// Default is current time + 7 days
mDate = new Date();
mDate = new Date(mDate.getTime() + SEVEN_DAYS);
Calendar c = Calendar.getInstance();
c.setTime(mDate);
setDateString(c.get(Calendar.YEAR), c.get(Calendar.MONTH),
c.get(Calendar.DAY_OF_MONTH));
dateView.setText(dateString);
setTimeString(c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE),
c.get(Calendar.MILLISECOND));
timeView.setText(timeString);
}
private static void setDateString(int year, int monthOfYear, int dayOfMonth) {
// Increment monthOfYear for Calendar/Date -> Time Format setting
monthOfYear++;
String mon = "" + monthOfYear;
String day = "" + dayOfMonth;
if (monthOfYear < 10)
mon = "0" + monthOfYear;
if (dayOfMonth < 10)
day = "0" + dayOfMonth;
dateString = year + "-" + mon + "-" + day;
}
private static void setTimeString(int hourOfDay, int minute, int mili) {
String hour = "" + hourOfDay;
String min = "" + minute;
if (hourOfDay < 10)
hour = "0" + hourOfDay;
if (minute < 10)
min = "0" + minute;
timeString = hour + ":" + min + ":00";
}
private Priority getPriority() {
switch (mPriorityRadioGroup.getCheckedRadioButtonId()) {
case R.id.lowPriority: {
return Priority.LOW;
}
case R.id.highPriority: {
return Priority.HIGH;
}
default: {
return Priority.MED;
}
}
}
private Status getStatus() {
switch (mStatusRadioGroup.getCheckedRadioButtonId()) {
case R.id.statusDone: {
return Status.DONE;
}
default: {
return Status.NOTDONE;
}
}
}
// DialogFragment used to pick a ToDoItem deadline date
public static class DatePickerFragment extends DialogFragment implements
DatePickerDialog.OnDateSetListener {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
final Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
// Create a new instance of DatePickerDialog and return it
return new DatePickerDialog(getActivity(), this, year, month, day);
}
#Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
setDateString(year, monthOfYear, dayOfMonth);
dateView.setText(dateString);
}
}
// DialogFragment used to pick a ToDoItem deadline time
public static class TimePickerFragment extends DialogFragment implements
TimePickerDialog.OnTimeSetListener {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
// Create a new instance of TimePickerDialog and return
return new TimePickerDialog(getActivity(), this, hour, minute,
true);
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
setTimeString(hourOfDay, minute, 0);
timeView.setText(timeString);
}
}
private void showDatePickerDialog() {
DialogFragment newFragment = new DatePickerFragment();
newFragment.show(getFragmentManager(), "datePicker");
}
private void showTimePickerDialog() {
DialogFragment newFragment = new TimePickerFragment();
newFragment.show(getFragmentManager(), "timePicker");
}
private void log(String msg) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.i(TAG, msg);
}
}
Here's the second activity which is ToDoItem
package course.labs.todomanager;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import android.content.Intent;
// Do not modify
public class ToDoItem {
public static final String ITEM_SEP = System.getProperty("line.separator");
public enum Priority {
LOW, MED, HIGH
};
public enum Status {
NOTDONE, DONE
};
public final static String TITLE = "title";
public final static String PRIORITY = "priority";
public final static String STATUS = "status";
public final static String DATE = "date";
public final static String FILENAME = "filename";
public final static SimpleDateFormat FORMAT = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss", Locale.US);
private String mTitle = new String();
private Priority mPriority = Priority.LOW;
private Status mStatus = Status.NOTDONE;
private Date mDate = new Date();
ToDoItem(String title, Priority priority, Status status, Date date) {
this.mTitle = title;
this.mPriority = priority;
this.mStatus = status;
this.mDate = date;
}
// Create a new ToDoItem from data packaged in an Intent
ToDoItem(Intent intent) {
mTitle = intent.getStringExtra(ToDoItem.TITLE);
mPriority = Priority.valueOf(intent.getStringExtra(ToDoItem.PRIORITY));
mStatus = Status.valueOf(intent.getStringExtra(ToDoItem.STATUS));
try {
mDate = ToDoItem.FORMAT.parse(intent.getStringExtra(ToDoItem.DATE));
} catch (ParseException e) {
mDate = new Date();
}
}
public String getTitle() {
return mTitle;
}
public void setTitle(String title) {
mTitle = title;
}
public Priority getPriority() {
return mPriority;
}
public void setPriority(Priority priority) {
mPriority = priority;
}
public Status getStatus() {
return mStatus;
}
public void setStatus(Status status) {
mStatus = status;
}
public Date getDate() {
return mDate;
}
public void setDate(Date date) {
mDate = date;
}
// Take a set of String data values and
// package them for transport in an Intent
public static void packageIntent(Intent intent, String title,
Priority priority, Status status, String date) {
intent.putExtra(ToDoItem.TITLE, title);
intent.putExtra(ToDoItem.PRIORITY, priority.toString());
intent.putExtra(ToDoItem.STATUS, status.toString());
intent.putExtra(ToDoItem.DATE, date);
}
public String toString() {
return mTitle + ITEM_SEP + mPriority + ITEM_SEP + mStatus + ITEM_SEP
+ FORMAT.format(mDate);
}
public String toLog() {
return "Title:" + mTitle + ITEM_SEP + "Priority:" + mPriority
+ ITEM_SEP + "Status:" + mStatus + ITEM_SEP + "Date:"
+ FORMAT.format(mDate);
}
}
Here's the third activity which is ToDoListAdapter
package course.labs.todomanager;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RelativeLayout;
import android.widget.TextView;
import course.labs.todomanager.ToDoItem.Status;
public class ToDoListAdapter extends BaseAdapter {
// List of ToDoItems
private final List<ToDoItem> mItems = new ArrayList<ToDoItem>();
private final Context mContext;
private static final String TAG = "Lab-UserInterface";
public ToDoListAdapter(Context context) {
mContext = context;
}
// Add a ToDoItem to the adapter
// Notify observers that the data set has changed
public void add(ToDoItem item) {
mItems.add(item);
notifyDataSetChanged();
}
// Clears the list adapter of all items.
public void clear(){
mItems.clear();
notifyDataSetChanged();
}
// Returns the number of ToDoItems
#Override
public int getCount() {
return mItems.size();
}
// Retrieve the number of ToDoItems
#Override
public Object getItem(int pos) {
return mItems.get(pos);
}
// Get the ID for the ToDoItem
// In this case it's just the position
#Override
public long getItemId(int pos) {
return pos;
}
//Create a View to display the ToDoItem
// at specified position in mItems
#Override
public View getView(int position, View convertView, ViewGroup parent) {
//TODO - Get the current ToDoItem
final ToDoItem toDoItem = getItemPos();
//TODO - Inflate the View for this ToDoItem
// from todo_item.xml.
LayoutInflater = itemLayout;
RelativeLayout itemLayout = m.context.getSystemService(R.layout.todo_item);
//TODO - Fill in specific ToDoItem data
// Remember that the data that goes in this View
// corresponds to the user interface elements defined
// in the layout file
//TODO - Display Title in TextView
final TextView titleView = ItemLayout.findViewById;
setTextView;
//TODO - Set up Status CheckBox
final CheckBox statusView = ItemLayout.findViewById(R.id.statusCheckBox);
statusView.setChecked(checked) statusDone;
statusView.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
log("Entered onCheckedChanged()");
//TODO - Set up and implement an OnCheckedChangeListener, which
// is called when the user toggles the status checkbox
if isChecked ToDoItem.setStatus status.Done(true);
else
}
});
//TODO - Display Priority in a TextView
final TextView priorityView = findViewByID(R.id.PriorityView);
PriorityView.setToString();
//TODO - Display Time and Date.
// Hint - use ToDoItem.FORMAT.format(toDoItem.getDate()) to get date and time String
final TextView dateView = itemLayout.findViewById(R.id.dateView);
dateView.setText(ToDoItem.FORMAT);
// Return the View you just created
return itemLayout;
}
private void log(String msg) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.i(TAG, msg);
}
}
And here is the fourth activity which is ToDoManagerActivity
package course.labs.todomanager;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.text.ParseException;
import java.util.Date;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
import course.labs.todomanager.ToDoItem.Priority;
import course.labs.todomanager.ToDoItem.Status;
public class ToDoManagerActivity extends ListActivity {
// Add a ToDoItem Request Code
private static final int ADD_TODO_ITEM_REQUEST = 0;
private static final String FILE_NAME = "TodoManagerActivityData.txt";
private static final String TAG = "Lab-UserInterface";
// IDs for menu items
private static final int MENU_DELETE = Menu.FIRST;
private static final int MENU_DUMP = Menu.FIRST + 1;
ToDoListAdapter mAdapter;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Create a new TodoListAdapter for this ListActivity's ListView
mAdapter = new ToDoListAdapter(getApplicationContext());
// Put divider between ToDoItems and FooterView
getListView().setFooterDividersEnabled(true);
//TODO - Inflate footerView for footer_view.xml file
TextView footerView = TextView().getLayoutInflater()
.inflate(R.layout.footer_view, null);
//TODO - Add footerView to ListView
getListView fv = (ListView)findViewById(R.layout.footer_view);
footerView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered footerView.OnClickListener.onClick()");
//TODO - Attach Listener to FooterView. Implement onClick().
Intent intent = new Intent(getBaseContext(), AddToDoActivity.class);
startActivityForResult(intent, ADD_TODO_ITEM_REQUEST);
}
});
//TODO - Attach the adapter to this ListActivity's ListView
getListView.footer_view.setAdapter(mAdapter, fv);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
log("Entered onActivityResult()");
// TODO - Check result code and request code.
// If user submitted a new ToDoItem
// Create a new ToDoItem from the data Intent
// and then add it to the adapter
if requestCode == ADD_TODO_ITEM_REQUEST {
also if resultCode != RESULT_OK(true);
new mAdapter++;
}
}
// Do not modify below here
#Override
public void onResume() {
super.onResume();
// Load saved ToDoItems, if necessary
if (mAdapter.getCount() == 0)
loadItems();
}
#Override
protected void onPause() {
super.onPause();
// Save ToDoItems
saveItems();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(Menu.NONE, MENU_DELETE, Menu.NONE, "Delete all");
menu.add(Menu.NONE, MENU_DUMP, Menu.NONE, "Dump to log");
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_DELETE:
mAdapter.clear();
return true;
case MENU_DUMP:
dump();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void dump() {
for (int i = 0; i < mAdapter.getCount(); i++) {
String data = ((ToDoItem) mAdapter.getItem(i)).toLog();
log("Item " + i + ": " + data.replace(ToDoItem.ITEM_SEP, ","));
}
}
// Load stored ToDoItems
private void loadItems() {
BufferedReader reader = null;
try {
FileInputStream fis = openFileInput(FILE_NAME);
reader = new BufferedReader(new InputStreamReader(fis));
String title = null;
String priority = null;
String status = null;
Date date = null;
while (null != (title = reader.readLine())) {
priority = reader.readLine();
status = reader.readLine();
date = ToDoItem.FORMAT.parse(reader.readLine());
mAdapter.add(new ToDoItem(title, Priority.valueOf(priority),
Status.valueOf(status), date));
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParseException e) {
e.printStackTrace();
} finally {
if (null != reader) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
// Save ToDoItems to file
private void saveItems() {
PrintWriter writer = null;
try {
FileOutputStream fos = openFileOutput(FILE_NAME, MODE_PRIVATE);
writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(
fos)));
for (int idx = 0; idx < mAdapter.getCount(); idx++) {
writer.println(mAdapter.getItem(idx));
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (null != writer) {
writer.close();
}
}
}
private void log(String msg) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.i(TAG, msg);
}
}
Any thought on how to improve the cancelButton code in the AddToDoAcitivity?
final Button cancelButton = (Button) findViewById(R.id.cancelButton);
cancelButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered cancelButton.OnClickListener.onClick()");
//TODO - Implement onClick().
Intent intent = new Intent setResult;
finish();
}
});

change your AddToDoActivity code like this
public class AddToDoActivity extends Activity {
// 7 days in milliseconds - 7 * 24 * 60 * 60 * 1000
private static final int SEVEN_DAYS = 604800000;
private static final String TAG = "Lab-UserInterface";
private static String timeString;
private static String dateString;
private static TextView dateView;
private static TextView timeView;
private Date mDate;
private RadioGroup mPriorityRadioGroup;
private RadioGroup mStatusRadioGroup;
private EditText mTitleText;
private RadioButton mDefaultStatusButton;
private RadioButton mDefaultPriorityButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_todo);
mTitleText = (EditText) findViewById(R.id.title);
mDefaultStatusButton = (RadioButton) findViewById(R.id.statusNotDone);
mDefaultPriorityButton = (RadioButton) findViewById(R.id.medPriority);
mPriorityRadioGroup = (RadioGroup) findViewById(R.id.priorityGroup);
mStatusRadioGroup = (RadioGroup) findViewById(R.id.statusGroup);
dateView = (TextView) findViewById(R.id.date);
timeView = (TextView) findViewById(R.id.time);
// Set the default date and time
setDefaultDateTime();
// OnClickListener for the Date button, calls showDatePickerDialog() to show
// the Date dialog
final Button datePickerButton = (Button) findViewById(R.id.date_picker_button);
datePickerButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
showDatePickerDialog();
}
});
// OnClickListener for the Time button, calls showTimePickerDialog() to show
// the Time Dialog
final Button timePickerButton = (Button) findViewById(R.id.time_picker_button);
timePickerButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
showTimePickerDialog();
}
});
// OnClickListener for the Cancel Button,
final Button cancelButton = (Button) findViewById(R.id.cancelButton);
cancelButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered cancelButton.OnClickListener.onClick()");
finish();
}
});
//OnClickListener for the Reset Button
final Button resetButton = (Button) findViewById(R.id.resetButton);
resetButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered resetButton.OnClickListener.onClick()");
setDefaultDateTime();
mTitleText.setText("");
mDefaultStatusButton.setChecked(true);
mDefaultPriorityButton.setChecked(true);
}
});
// OnClickListener for the Submit Button
// Implement onClick().
final Button submitButton = (Button) findViewById(R.id.submitButton);
submitButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
log("Entered submitButton.OnClickListener.onClick()");
// Gather ToDoItem data
Priority priority = getPriority();
Status status = getStatus();
String titleString = mTitleText.getText().toString();
// Date
String fullDate = dateString + " " + timeString;
// Package ToDoItem data into an Intent
Intent data = new Intent();
ToDoItem.packageIntent(data, titleString, priority, status, fullDate);
setResult(Activity.RESULT_OK, data);
finish();
}
});
}
// Do not modify below here
// Use this method to set the default date and time
private void setDefaultDateTime() {
// Default is current time + 7 days
mDate = new Date();
mDate = new Date(mDate.getTime() + SEVEN_DAYS);
Calendar c = Calendar.getInstance();
c.setTime(mDate);
setDateString(c.get(Calendar.DAY_OF_MONTH), c.get(Calendar.MONTH),
c.get(Calendar.YEAR));
dateView.setText(dateString);
setTimeString(c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE),
c.get(Calendar.MILLISECOND));
timeView.setText(timeString);
}
private static void setDateString(int dayOfMonth, int monthOfYear, int year) {
// Increment monthOfYear for Calendar/Date -> Time Format setting
monthOfYear++;
String mon = "" + monthOfYear;
String day = "" + dayOfMonth;
if (monthOfYear < 10)
mon = "0" + monthOfYear;
if (dayOfMonth < 10)
day = "0" + dayOfMonth;
dateString = year + "-" + mon + "-" + day;
}
private static void setTimeString(int hourOfDay, int minute, int mili) {
String hour = "" + hourOfDay;
String min = "" + minute;
if (hourOfDay < 10)
hour = "0" + hourOfDay;
if (minute < 10)
min = "0" + minute;
timeString = hour + ":" + min + ":00";
}
private Priority getPriority() {
switch (mPriorityRadioGroup.getCheckedRadioButtonId()) {
case R.id.lowPriority: {
return Priority.LOW;
}
case R.id.highPriority: {
return Priority.HIGH;
}
default: {
return Priority.MED;
}
}
}
private Status getStatus() {
switch (mStatusRadioGroup.getCheckedRadioButtonId()) {
case R.id.statusDone: {
return Status.DONE;
}
default: {
return Status.NOTDONE;
}
}
}
// DialogFragment used to pick a ToDoItem deadline date
public static class DatePickerFragment extends DialogFragment implements
DatePickerDialog.OnDateSetListener {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
final Calendar c = Calendar.getInstance();
int day = c.get(Calendar.DAY_OF_MONTH);
int month = c.get(Calendar.MONTH);
int year = c.get(Calendar.YEAR);
// Create a new instance of DatePickerDialog and return it
return new DatePickerDialog(getActivity(), this, year, month, day);
}
#Override
public void onDateSet(DatePicker view, int dayOfMonth, int monthOfYear,
int year) {
setDateString(dayOfMonth, monthOfYear, year);
dateView.setText(dateString);
}
}
// DialogFragment used to pick a ToDoItem deadline time
public static class TimePickerFragment extends DialogFragment implements
TimePickerDialog.OnTimeSetListener {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
// Create a new instance of TimePickerDialog and return
return new TimePickerDialog(getActivity(), this, hour, minute,
true);
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
setTimeString(hourOfDay, minute, 0);
timeView.setText(timeString);
}
}
private void showDatePickerDialog() {
DialogFragment newFragment = new DatePickerFragment();
newFragment.show(getFragmentManager(), "datePicker");
}
private void showTimePickerDialog() {
DialogFragment newFragment = new TimePickerFragment();
newFragment.show(getFragmentManager(), "timePicker");
}
private void log(String msg) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.i(TAG, msg);
}
}