Develop Reference

Recyclerview only shows 1 item

I have the following code from my app where I am trying to retrieve expenses' items that happened today's day (dd) in the past, more than 2 times, I want to populate those items in a recyclerview.
I get the expected result but only one item at the time, the recyclerview is not showing the list as expected.
I use realtime database.
I am looking for some ideas, please see my code;
//suggestions
databaseReference.addValueEventListener(new ValueEventListener() {
#SuppressLint("NotifyDataSetChanged")
#Override
public void onDataChange(#NonNull DataSnapshot snapshot) {
suggestions.clear();
int occurrences = 0;
Expense expense1 = new Expense();
for (DataSnapshot dataSnapshot : snapshot.getChildren()) {
Expense expense = dataSnapshot.getValue(Expense.class);
assert expense != null;
if (expense.getDate().substring(0, 2).equals(day) && expense.getDate().substring(6, 10).equals(year)) {
for (Expense e : all_expenses) {
if (!today_expenses.contains(e)) {
suggestions_title.setVisibility(View.VISIBLE);
occurrences = Collections.frequency(all_expenses, e);
expense1 = e;
}
}
}
}
if (occurrences > 2) suggestions.add(expense1);
suggestionsAdapter.notifyDataSetChanged();
if (suggestionsAdapter.getItemCount() == 0) {
suggestions_title.setVisibility(View.INVISIBLE);
}
}
#Override
public void onCancelled(#NonNull DatabaseError error) {
}
});
and this below is my adapter class;
public class SuggestionsAdapter extends RecyclerView.Adapter<SuggestionsAdapter.ViewHolder> {
Activity activity;
private final ArrayList<Expense> suggestions;
private String item;
private String category;
private int amount;
FirebaseAuth mAuth;
int totalMonth;
public SuggestionsAdapter(Activity activity, ArrayList<Expense> suggestions) {
this.activity = activity;
this.suggestions = suggestions;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(activity).inflate(R.layout.suggestions, parent, false);
mAuth = FirebaseAuth.getInstance();
monthTotalLimit();
return new ViewHolder(view);
}
#SuppressLint("SetTextI18n")
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, #SuppressLint("RecyclerView") int position) {
final Expense expense = suggestions.get(position);
holder.expense.setText("" + expense.getItem());
holder.add.setOnClickListener(view -> {
item = expense.getItem();
category = expense.getCategory();
amount = expense.getAmount();
updateExpense();
});
}
#Override
public int getItemCount() {
return suggestions.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder {
private final TextView expense;
private final TextView add;
public ViewHolder(#NonNull View itemView) {
super(itemView);
expense = itemView.findViewById(R.id.expense);
add = itemView.findViewById(R.id.add_suggestion);
}
}
//saving amount for limit check
private void monthTotalLimit() {
final Calendar c = Calendar.getInstance();
#SuppressLint("SimpleDateFormat") DateFormat dateFormat = new SimpleDateFormat("MM");
String month = dateFormat.format(c.getTime());
DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference().child("Expenses").child(Objects.requireNonNull(mAuth.getCurrentUser()).getUid());
databaseReference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot snapshot) {
int totalAmount = 0;
for (DataSnapshot ds : snapshot.getChildren()) {
Expense expense = ds.getValue(Expense.class);
//dd-MM-yyyy
assert expense != null;
if (expense.getDate().substring(3, 5).equals(month)) {
totalAmount += expense.getAmount();
totalMonth = totalAmount;
}
}
}
#Override
public void onCancelled(#NonNull DatabaseError error) {
}
});
}
private void updateExpense() {
DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference().child("Expenses").child(Objects.requireNonNull(FirebaseAuth.getInstance().getCurrentUser()).getUid());
AlertDialog.Builder myDialog = new AlertDialog.Builder(activity);
LayoutInflater inflater = LayoutInflater.from(activity);
View myView = inflater.inflate(R.layout.input_layout, null);
myDialog.setView(myView);
final AlertDialog dialog = myDialog.create();
dialog.setCancelable(false);
final EditText mItem = myView.findViewById(R.id.item);
final TextView mDate = myView.findViewById(R.id.date);
final EditText mAmount = myView.findViewById(R.id.amount);
final Calendar c = Calendar.getInstance();
#SuppressLint("SimpleDateFormat") DateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
String date = dateFormat.format(c.getTime());
mItem.setText(item);
mDate.setText(date);
mAmount.setText(String.valueOf(amount));
final Spinner categorySpinner = myView.findViewById(R.id.spinner);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(activity, R.array.Category, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
categorySpinner.setAdapter(adapter);
int spinnerPosition = adapter.getPosition(category);
categorySpinner.setSelection(spinnerPosition);
final Button cancel_btn = myView.findViewById(R.id.cancel_btn);
final Button save_btn = myView.findViewById(R.id.save_btn);
mDate.setOnClickListener(view -> datePicker(mDate));
save_btn.setOnClickListener(view -> {
String itemString = mItem.getText().toString();
String amountString = mAmount.getText().toString();
String spinnerString = categorySpinner.getSelectedItem().toString();
String userInputDate = mDate.getText().toString();
int amountInt;
if (itemString.isEmpty()) {
mItem.setError(activity.getString(R.string.name_required));
mItem.requestFocus();
return;
}
if (amountString.equals("") || amountString.equals("0")) {
mAmount.setError(activity.getString(R.string.amount_required));
mAmount.requestFocus();
return;
} else {
amountInt = Integer.parseInt(amountString);
}
if ((totalMonth + amountInt) > 2000000000) {
mAmount.setError(activity.getString(R.string.monthly_limit));
mAmount.requestFocus();
return;
}
if (spinnerString.equals(activity.getString(R.string.category))) {
Toast.makeText(activity, R.string.category_required, Toast.LENGTH_SHORT).show();
return;
} else {
String id = databaseReference.push().getKey();
Expense expense = new Expense(itemString.toUpperCase(Locale.ROOT), spinnerString, userInputDate, id, amountInt);
assert id != null;
databaseReference.child(id).setValue(expense).addOnCompleteListener(task -> {
if (!task.isSuccessful()) {
Toast.makeText(activity, activity.getString(R.string.input_error) + task.getException(), Toast.LENGTH_SHORT).show();
}
});
}
dialog.dismiss();
});
cancel_btn.setOnClickListener(view -> dialog.dismiss());
dialog.show();
}
private void datePicker(TextView textView) {
Calendar calendar = Calendar.getInstance();
// Get current time
int currentYear = calendar.get(Calendar.YEAR);
int currentMonth = calendar.get(Calendar.MONTH);
int currentDay = calendar.get(Calendar.DAY_OF_MONTH);
// Create listener
#SuppressLint("SetTextI18n") DatePickerDialog.OnDateSetListener listener = (view, year, month, day) -> {
#SuppressLint("DefaultLocale") String dayS = String.format("%02d", day);
#SuppressLint("DefaultLocale") String monthS = String.format("%02d", month + 1);
textView.setText(dayS + "-" + monthS + "-" + year);
};
// Move day as today
calendar.set(Calendar.DAY_OF_MONTH, currentDay);
// Min = time after changes
long minTime = calendar.getTimeInMillis();
// Move day as first day of the month
calendar.set(Calendar.DAY_OF_MONTH, 1);
// Move to next month
calendar.add(Calendar.MONTH, +1);
// Go back one day (so last day of current month)
calendar.add(Calendar.DAY_OF_MONTH, -1);
// Max = current
long maxTime = calendar.getTimeInMillis();
// Create dialog
DatePickerDialog datePickerDialog = new DatePickerDialog(activity,
listener,
currentYear,
currentMonth,
currentDay);
// Set dates
datePickerDialog.getDatePicker().setMinDate(minTime);
datePickerDialog.getDatePicker().setMaxDate(maxTime);
// Show dialog
datePickerDialog.show();
}
}

Your code looks fine and must be fetching multiple items from the firebase database but only one is displayed on the whole screen because in the adapter layout, the height of the parent would be match_parent instead of wrap_content, that's why one item is taking up the whole screen and you can't see the rest of the items. If you even scroll your screen vertically, you will see the other items as well. Just change it to wrap_content and everything will be good to go :)

How to remove item from an ArrayList using a filtered RecyclerView and OnClickListener

Check updates below.
I am making an app for a stair climbing challenge that tracks the date and number of steps taken (user input, not automatic). I have an ArrayList that stored objects containing the following three variables:
String date
Int steps
Instant timeStamp
The app has two input buttons, one for integer step input, and one for date selection. There is a simple method created to filter the visible list by the selected date and a couple of visual indicators of your daily progress vs. the daily goal for flights of stairs for the day.
App screenshot
I am using the Instant variable as a timestamp to try to get around the issue of the OnClickListener selecting the position of the item from the filtered list instead of the corresponding item in the unfiltered list. I do this by using the position reported from the OnClickListener to fetch the timeStamp variable from the associated item in the filtered ArrayList, then compare that timeStamp to the items in the unfiltered ArrayList and fetch the indexOf the matching item.
All filtered ArrayLists show properly in the RecyclerView when you select a date.
The problem comes in removing items. If I add items only to one date, then you can remove and add items as you'd expect.
App function without date change (gif)
If I add to one date, then another, while they display properly, the items will be removed from the correct position but in the date you first added items, regardless of whether that is the currently selected date or not.
App function with changing date (gif)
I feel like I'm missing something relatively simple here and my brain is just too saturated with this project to see it.
Main Activity:
public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private ExampleAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
Date temp_curr_date = Calendar.getInstance().getTime();
SimpleDateFormat df = new SimpleDateFormat("dd-MMM-yyyy");
String sel_date = df.format(temp_curr_date);
String curr_date = df.format(temp_curr_date);
double daily_total;
int progress = 0;
double daily_goal = 7.5;
TextView textView1;
TextView textView2;
TextView textViewFlights;
ProgressBar pb;
List<ExampleItem> mExampleList;
List<ExampleItem> filteredList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// ----- LOAD SAVED ARRAY LIST -----
loadData();
// ----- SET VARIABLES -----
daily_total = totalOutput(mExampleList, sel_date);
textView1 = findViewById(R.id.total);
textView1.setText(String.valueOf(daily_total));
textViewFlights = findViewById(R.id.flights);
pb = findViewById(R.id.progress_bar);
pb.setProgress(getProgress(mExampleList, sel_date), true);
// ----- BUILD RECYCLERVIEW -----
buildRecyclerView();
filter(sel_date);
// ----- ADD STEPS DIALOGUE -----
setAddStepButton();
// ----- CALENDAR DIALOGUE -----
setDateChangeButton();
}
public double totalOutput(List<ExampleItem> steps, String date) {
try{
int temp_total = 0;
double flight_total;
for (int a = 0; a < steps.size(); a++) {
if (date.equals(steps.get(a).getText1()))
temp_total += steps.get(a).getText2();
}
flight_total = round(temp_total / 16.0, 2);
return flight_total;
} catch (Exception e){
return 0.0;
}
}
public static double round(double value, int places) {
if (places < 0) throw new IllegalArgumentException();
BigDecimal bd = new BigDecimal(value);
bd = bd.setScale(places, RoundingMode.HALF_UP);
return bd.doubleValue();
}
public static int toInt(double value) {
BigDecimal bd = new BigDecimal(value);
bd = bd.setScale(0, RoundingMode.HALF_UP);
return bd.intValue();
}
public static Date getDate(int year, int month, int day) {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, year);
cal.set(Calendar.MONTH, month);
cal.set(Calendar.DAY_OF_MONTH, day);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
private void saveData(){
SharedPreferences sharedPreferences = getSharedPreferences("shared preferences", MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
Gson gson = new Gson();
String json = gson.toJson(mExampleList);
editor.putString("task list", json);
editor.apply();
}
private void loadData(){
SharedPreferences sharedPreferences = getSharedPreferences("shared preferences", MODE_PRIVATE);
Gson gson = new Gson();
String json = sharedPreferences.getString("task list", null);
Type type = new TypeToken<ArrayList<ExampleItem>>() {}.getType();
mExampleList = gson.fromJson(json, type);
if (mExampleList == null){
mExampleList = new ArrayList<>();
}
}
private int getProgress(List<ExampleItem> steps, String date){
int daily_progress_int;
try{
int temp_progress = 0;
double flight_total;
for (int a = 0; a < steps.size(); a++) {
if (date.compareTo(steps.get(a).getText1()) == 0)
temp_progress += steps.get(a).getText2();
}
flight_total = round(temp_progress / 16.0, 2);
daily_progress_int = toInt((flight_total/daily_goal)*100);
return daily_progress_int;
} catch (Exception e){
return 0;
}
}
private void addProgress(double x, int prog){
int daily_progress_int = toInt((x/daily_goal)*100);
if (progress <= 100-daily_progress_int){
progress = progress + prog;
pb = findViewById(R.id.progress_bar);
pb.setProgress(daily_progress_int, true);
} else if (progress + daily_progress_int > 100){
pb = findViewById(R.id.progress_bar);
pb.setProgress(100, true);
}
}
private void removeProgress(double x, int prog){
int daily_progress_int = toInt((x/daily_goal)*100);
progress = progress - prog;
if (progress <= 100) {
pb = findViewById(R.id.progress_bar);
pb.setProgress(daily_progress_int, true);
} else {
pb = findViewById(R.id.progress_bar);
pb.setProgress(0, true);
}
}
public void addItem(String date, int steps, Instant ts){
mExampleList.add(new ExampleItem(date, steps, ts));
filter(sel_date);
}
public void removeItem(final int position){
final AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
View viewInflated = LayoutInflater.from(MainActivity.this).inflate(R.layout.confirm, (ViewGroup) findViewById(android.R.id.content), false);
builder.setCancelable(true);
builder.setView(viewInflated);
builder.setPositiveButton("Yup",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
mExampleList.remove(position);
mAdapter.notifyDataSetChanged(position);
filter(sel_date);
daily_total = totalOutput(mExampleList, sel_date);
textView1 = findViewById(R.id.total);
textView1.setText(String.valueOf(daily_total));
removeProgress(daily_total,progress);
if (daily_total == 1.0){
textViewFlights.setText("flight");
} else {
textViewFlights.setText("flights");
}
saveData();
}
});
builder.setNegativeButton("Nope", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
public void buildRecyclerView(){
mRecyclerView = findViewById(R.id.recyclerView);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mAdapter = new ExampleAdapter(mExampleList);
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setAdapter(mAdapter);
mAdapter.setOnItemClickListener(new ExampleAdapter.OnItemClickListener() {
#Override
public void onItemClick(int position) {
Instant test = filteredList.get(position).getTimeStamp();
for (ExampleItem item : mExampleList){
if (test.compareTo(item.getTimeStamp()) == 0){
removeItem(mExampleList.indexOf(item));
}
});
}
public void filter(String text){
filteredList = new ArrayList<>();
for (ExampleItem item : mExampleList){
if (item.getText1().toLowerCase().contains(text.toLowerCase())){
filteredList.add(item);
}
}
mAdapter.filterList(filteredList);
}
public void setAddStepButton(){
FloatingActionButton fab = findViewById(R.id.addSteps);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
View viewInflated = LayoutInflater.from(MainActivity.this).inflate(R.layout.add_steps, (ViewGroup) findViewById(android.R.id.content), false);
// Step input
final EditText input = viewInflated.findViewById(R.id.input);
builder.setView(viewInflated);
// OK Button
builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
if (input.getText().length() != 0) {
try {
int in = Integer.parseInt(String.valueOf(input.getText()));
if (in > 0) {
Instant timeStamp = Instant.now();
addItem(sel_date, in, timeStamp);
dialog.dismiss();
} else {
dialog.cancel();
}
} catch (Exception e) {
dialog.cancel();
}
daily_total = totalOutput(mExampleList, sel_date);
textView1 = findViewById(R.id.total);
textView1.setText(String.valueOf(daily_total));
addProgress(daily_total, progress);
mAdapter.notifyDataSetChanged();
filter(sel_date);
if (daily_total == 1.0){
textViewFlights.setText("flight");
} else {
textViewFlights.setText("flights");
}
saveData();
} else{
dialog.cancel();
}
}
});
// Cancel Button
builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
}
});
}
public void setDateChangeButton(){
FloatingActionButton fabcal = findViewById(R.id.calendarButton);
fabcal.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
LayoutInflater inflater = (LayoutInflater)getApplicationContext().getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout ll= (LinearLayout)inflater.inflate(R.layout.calendar, null, false);
CalendarView cv = (CalendarView) ll.getChildAt(0);
long milliseconds = 0;
try {
Date d = df.parse(sel_date);
milliseconds = d.getTime();
} catch (ParseException e) {
e.printStackTrace();
}
cv.setDate(milliseconds);
cv.setOnDateChangeListener(new CalendarView.OnDateChangeListener() {
#Override
public void onSelectedDayChange(
#NonNull CalendarView view,
int year,
int month,
int dayOfMonth)
{
Date temp_sel_date = getDate(year, month, dayOfMonth);
sel_date = df.format(temp_sel_date);
textView2 = findViewById(R.id.daily_total);
if (sel_date.equals(curr_date)){
textView2.setText("Today");
} else {
String dt_day = (String) DateFormat.format("dd", temp_sel_date);
String dt_month = (String) DateFormat.format("MMM", temp_sel_date);
textView2.setText(dt_month + " " + dt_day);
}
daily_total = totalOutput(mExampleList, sel_date);
textView1 = findViewById(R.id.total);
textView1.setText(String.valueOf(daily_total));
pb = findViewById(R.id.progress_bar);
pb.setProgress(getProgress(mExampleList, sel_date), true);
mAdapter.notifyDataSetChanged();
filter(sel_date);
}
});
new AlertDialog.Builder(MainActivity.this)
.setView(ll)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
}
}
).show();
}
});
}
}
Adapter Class:
public class ExampleAdapter extends RecyclerView.Adapter<ExampleAdapter.ExampleViewHolder> {
private static List<ExampleItem> mExampleList;
private static List<ExampleItem> exampleListFull;
private OnItemClickListener mListener;
public interface OnItemClickListener{
void onItemClick(int position);
}
public void setOnItemClickListener(OnItemClickListener listener){
mListener = listener;
}
public static class ExampleViewHolder extends RecyclerView.ViewHolder {
public TextView mTextView1;
public ImageView mDeleteImage;
public ExampleViewHolder(View itemView, final OnItemClickListener listener) {
super(itemView);
mTextView1 = itemView.findViewById(R.id.textView);
mDeleteImage = itemView.findViewById(R.id.image_delete);
mDeleteImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (listener != null){
int position = getAdapterPosition();
if (position != RecyclerView.NO_POSITION){
Instant test = mExampleList.get(position).getTimeStamp();
for (ExampleItem item : exampleListFull){
int compare = test.compareTo(item.getTimeStamp());
if (compare == 0){
int delIndex = exampleListFull.indexOf(item);
position = delIndex;
}
}
listener.onItemClick(position);
}
}
}
});
}
}
public ExampleAdapter(List<ExampleItem> exampleList){
this.mExampleList = exampleList;
exampleListFull = new ArrayList<>(exampleList);
}
#NonNull
#Override
public ExampleViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int i) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.example_item, parent, false);
ExampleViewHolder evh = new ExampleViewHolder(v, mListener);
return evh;
}
#Override
public void onBindViewHolder(#NonNull ExampleViewHolder holder, int position) {
ExampleItem currentItem = mExampleList.get(position);
if (currentItem.getText2() == 1.0){
holder.mTextView1.setText(currentItem.getText2() + " step");
} else {
holder.mTextView1.setText(currentItem.getText2() + " steps");
}
}
#Override
public int getItemCount() {
return mExampleList.size();
}
public void filterList(List<ExampleItem> filteredList){
mExampleList = filteredList;
notifyDataSetChanged();
}
}
If anyone out there has any ideas, I'd love to hear from you!
UPDATE: The included code now reflects the changes suggested by users and is fully functional.

You should use
mAdapter.notifyDataSetChanged();
Instead of
mAdapter.notifyItemRemoved(position);
For more details Visit
this.

I figured it out, for those interested. Comparing the timestamps was working fine, but I put it in the wrong part of the OnClickListener cycle. It needed to be placed in the MainActivity buildRecyclerView method in the setOnClickListener override. I've updated original code to reflect this change.
Thank you anyone that took the time to look at my post.

maybe it could be better to place the onClickListner in Your adpater-class..so You can control every single card if it should be clickable or not...or if You want to place any Ads between the cards
GGK

Android Studio app works when I launch it from Android Studio, but not when I launch from device

I am new to app development and so far my app is working as intended but only when I launch it on my device from Android Studio. For example, I have once instance variable that I give a value of 1 in the onCreate() method. When I launch the app from android studio on to my device, it works fine and the variable has a value of 1. However, when I launch it from my device without using android studio, the variable is given a value of 0. I have also found that I will get a bunch of NullPointerExceptions on variables that I know should have a value, and once again it works when launched from Android Studio, but not when launched from the device.
Here is MainActivity
public class MainActivity extends AppCompatActivity
{
private ArrayList<String> arrayList;
private ArrayList<ListItem> itemList;
private ArrayAdapter<String> adapter;
private EditText txtInput;
private int payRoll;
private String value;
private Intent mainToPayroll;
private int hours;
private int earnings;
private ArrayList<Integer> rollList;
private ArrayList<Integer> hourList;
private ArrayList<Integer> wageList;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rollList = new ArrayList<>(0);
hourList = new ArrayList<>(0);
wageList = new ArrayList<>(0);
payRoll = 1;
Bundle bun = getIntent().getExtras();
if(bun != null)
{
rollList = bun.getIntegerArrayList("rolls");
hourList = bun.getIntegerArrayList("hours");
wageList = bun.getIntegerArrayList("wages");
payRoll = bun.getInt("roll");
}
ListView listView = (ListView) findViewById(R.id.listv);
String[] items = {};
arrayList = new ArrayList<>(Arrays.asList(items));
itemList = new ArrayList<>(0);
adapter = new ArrayAdapter<String>(this, R.layout.list_item, R.id.txtitem, arrayList);
listView.setAdapter(adapter);
Button btAdd = (Button) findViewById(R.id.btadd);
mainToPayroll = new Intent(this, PayrollActivity.class);
if(rollList != null)
{
for (int i = 0; i < rollList.size(); i++) {
ListItem newItem = new ListItem(rollList.get(i), hourList.get(i), wageList.get(i));
arrayList.add(newItem.toString());
itemList.add(newItem);
adapter.notifyDataSetChanged();
}
rollList.clear();
hourList.clear();
wageList.clear();
}
btAdd.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
ListItem newItem = new ListItem(payRoll, 0, 0);
arrayList.add(newItem.toString());
itemList.add(newItem);
adapter.notifyDataSetChanged();
payRoll++;
}
});
listView.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
value = (String)adapter.getItem(position);
ListItem item = itemList.get(position);
Bundle info = new Bundle();
info.putString("val", value);
info.putInt("hours", item.getHours());
info.putInt("wage", item.getWages());
info.putInt("pos", position);
if(itemList.size() > 0)
{
for (ListItem items : itemList)
{
rollList.add(items.getPayroll());
hourList.add(items.getHours());
wageList.add(items.getWages());
}
}
info.putIntegerArrayList("rolls", rollList);
info.putIntegerArrayList("hours", hourList);
info.putIntegerArrayList("wages", wageList);
info.putInt("roll", payRoll);
info.putBoolean("rest", restore);
mainToPayroll.putExtras(info);
startActivity(mainToPayroll);
}
});
}
This Activity is started whenever an item on the listview is clicked
public class PayrollActivity extends AppCompatActivity
{
private static TextView text;
private String payrollNumber;
private int payrollHrs;
private int payrollWages;
private int position;
private Intent payrollToMain;
private Button returnButton;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_payroll);
final Bundle info = getIntent().getExtras();
System.out.print(getIntent().getType());
payrollNumber = info.getString("val");
payrollHrs = info.getInt("hours");
payrollWages = info.getInt("wage");
position = info.getInt("pos");
payrollToMain = new Intent(this, MainActivity.class);
returnButton = (Button) findViewById(R.id.btnRtrn);
returnButton.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
Bundle thing = new Bundle();
thing.putIntegerArrayList("rolls", info.getIntegerArrayList("rolls"));
thing.putIntegerArrayList("hours", info.getIntegerArrayList("hours"));
thing.putIntegerArrayList("wages", info.getIntegerArrayList("wages"));
thing.putInt("roll", info.getInt("roll"));
thing.putBoolean("rest", info.getBoolean("rest"));
payrollToMain.putExtras(thing);
startActivity(payrollToMain);
}
});
text = (TextView) findViewById(R.id.title);
text.setText(payrollNumber);
}
public static void setLabelText(String val)
{
text.setText(val);
}
This is a class I created for the items that go on the listview
public class ListItem
{
private int payroll;
private int hrs;
private int wages;
public ListItem(int roll, int hours, int wag)
{
payroll = roll;
hrs = hours;
wages = wag;
}
public int getPayroll()
{
return payroll;
}
public int getHours()
{
return hrs;
}
public int getWages()
{
return wages;
}
public void setPayroll(int roll)
{
payroll = roll;
}
public void setHrs(int hours)
{
hrs = hours;
}
public void setWages(int wage)
{
wages = wage;
}
public String toString()
{
return "Payroll " + payroll + "\n" + hrs + " hours\n$" + wages;
}

I think your problem is this piece of code in your MainActivity:
Bundle bun = getIntent().getExtras();
if(bun != null)
{
rollList = bun.getIntegerArrayList("rolls");
hourList = bun.getIntegerArrayList("hours");
wageList = bun.getIntegerArrayList("wages");
payRoll = bun.getInt("roll");
}
The getIntent().getExtras() may return a non-null Bundle object but the bundle may not have the keys you are trying to access, in which case all your instance variables will be set to null or zero for int.
You can get around this by simply checking if a particular key exists in the bundle and only setting your variable if it does.
bun.containsKey()
Or you can initialize your variables if they are null after loading them from the bundle.

Try uninstalling the app completely from the device and then try again. This solves the issue at times.

Android - Calendar data not being sent with putExtra()

What I have is a calendar widget which opens up when pressed and the user can select their dates from the calendar. I have variables to save the dates entered in inside the DateSetup class and I followed the code on using putExtra() to send the data from one class to another, but the values are not showing up.
The process of the application is when the dates have been selected, the user will then be able to select the times with the time picker widget which works.
After the dates and times have been selected, the values are sent to a MySQL database which the dates/times values should be shown. Only the selected times are showing but not the dates from the calendar selected.
DateSetup class
public class DateSetup extends MainActivity implements View.OnClickListener
{
//UI References
private EditText fromDateEtxt;
private EditText toDateEtxt;
// Dates Strings setup
String startDate;
String endDate;
DatePickerDialog fromDatePickerDialog;
DatePickerDialog toDatePickerDialog;
private SimpleDateFormat dateFormatter;
private DataDBAdapter2 Database;
Button btnHistory;
Button btnTime;
Button btnFuture;
Button btnManual;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.date_setup);
fromDateEtxt = (EditText) findViewById(R.id.etxt_fromdate);
fromDateEtxt.setInputType(InputType.TYPE_NULL);
fromDateEtxt.requestFocus();
toDateEtxt = (EditText) findViewById(R.id.etxt_todate);
toDateEtxt.setInputType(InputType.TYPE_NULL);
toDateEtxt.requestFocus();
btnTime = (Button)findViewById(R.id.btnSetDates);
btnFuture = (Button)findViewById(R.id.btnFutureSetups);
btnManual = (Button)findViewById(R.id.btnManualControl);
fromDateEtxt.setOnClickListener(this);
toDateEtxt.setOnClickListener(this);
// Open the database
Database = new DataDBAdapter2(this);
Database.open();
// Set the date format to English (Australia)
dateFormatter = new SimpleDateFormat("dd-MM-yyyy", Locale.ENGLISH);
btnHistory = (Button)findViewById(R.id.btnHistoryView);
btnHistory.setOnClickListener(this);
//-------------------------------------------
// Start Date (From date)
//-------------------------------------------
Calendar newCalendar = Calendar.getInstance();
fromDatePickerDialog = 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);
fromDateEtxt.setText(dateFormatter.format(newDate.getTime()));
//startDate = fromDateEtxt.getText().toString();
}
},newCalendar.get(Calendar.YEAR), newCalendar.get(Calendar.MONTH), newCalendar.get(Calendar.DAY_OF_MONTH));
//-------------------------------------------
// End Date (End date)
//-------------------------------------------
toDatePickerDialog = 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);
toDateEtxt.setText(dateFormatter.format(newDate.getTime()));
//endDate = toDateEtxt.getText().toString();
}
},newCalendar.get(Calendar.YEAR), newCalendar.get(Calendar.MONTH), newCalendar.get(Calendar.DAY_OF_MONTH));
// Set dates and continue to set times
btnTime.setOnClickListener(new View.OnClickListener()//OnClickListener()
{
#Override
public void onClick(View view)
{
// Start next activity
Intent i = new Intent(DateSetup.this, TimeSetup.class);
// Send data start data and End Date
//i.putExtra("START", startDate);
//i.putExtra("END", endDate);
i.putExtra("START", fromDateEtxt.getText().toString());
i.putExtra("END", toDateEtxt.getText().toString());
//i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
DateSetup.this.startActivity(i);
}
});
// History view
btnHistory.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v2)
{
Intent myIntent2 = new Intent(DateSetup.this, HistoryView.class);
myIntent2.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
DateSetup.this.startActivity(myIntent2);
}
});
// Future Settings View
btnFuture.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v)
{
Intent myIntent3 = new Intent(DateSetup.this, CurrentView.class);
myIntent3.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
DateSetup.this.startActivity(myIntent3);
}
});
// Manual Control
btnManual.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v)
{
Intent myIntent4 = new Intent(DateSetup.this, IrrigationControl.class);
myIntent4.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
DateSetup.this.startActivity(myIntent4);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
// Inflate the menu; this adds items to the action bar if it is present.
//getMenuInflater().inflate(R.menu.date_setup, menu);
//getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
#Override
public void onClick(View view)
{
if(view == fromDateEtxt)
{
fromDatePickerDialog.show();
}
else if(view == toDateEtxt)
{
toDatePickerDialog.show();
}
}
}
TimeSetup2 class
public class TimeSetup2 extends TimeSetup
{
Button btnBck;
Button btnSetDatesandTime;
String minutedisplay2;
String hourdisplay2;
private DataDBAdapter2 Database;
private TimePicker timePicker2;
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.time_setup2);
btnBck = (Button) findViewById(R.id.btnBack);
btnSetDatesandTime = (Button) findViewById(R.id.btnSet);
timePicker2 = (TimePicker)findViewById(R.id.timePicker2);
Database = new DataDBAdapter2(this);
Database.open();
// Back to previous activity
// http://stackoverflow.com/questions/4038479/android-go-back-to-previous-activity
btnBck.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v)
{
Intent myIntent = new Intent(TimeSetup2.this, TimeSetup.class);
TimeSetup2.this.startActivity(myIntent);
}
});
// Set time and dates
btnSetDatesandTime.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v)
{
// Generate random number for ID
Random r = new Random();
int i2 = r.nextInt(100-1) + 100;
// Convert from integer to string
String random2 = Integer.toString(i2);
//------------------------------------------------------
// Data from other classes to be sent to the database
//------------------------------------------------------
Intent intent = getIntent();
// Start Date and End date data
String StartD = intent.getStringExtra("START");
String EndD = intent.getStringExtra("END");
// Time Picker 1 Data (Working)
String StartTime1 = intent.getStringExtra("TIMEHOUR1");
String EndTime1 = intent.getStringExtra("TIMEMIN1");
// Time Picker 2 Data
//String StartTime2 = intent.getStringExtra("TIMEHOUR2");
//String EndTime2 = intent.getStringExtra("TIMEMIN2");
hourdisplay2 = timePicker2.getCurrentHour().toString();
minutedisplay2 = timePicker2.getCurrentMinute().toString();
// Send data to the Database
Database.insertData2(random2, StartD, EndD, StartTime1 + ":" + EndTime1, hourdisplay2 + ":" + minutedisplay2);
// Send data to the arduino board
// Show Message that the data has been sent
Toast.makeText(getApplicationContext(), "Irrigation Setups have been sent", Toast.LENGTH_LONG).show();
}
});
}
}
I've been stuck on trying to solve this problem for days. It's probably something really simple I'm missing out but I can't figure it out.

The only data types that are OS-friendly are primitive types (int, long, float, boolean, etc...), so that means that putExtra() allows you to store primitives only. That's why you cant send a Calendar object.
Try to send a String of your period to your next activity.

SimpleDateFormat and wrong dates

I had already tried the first two suggestions below, but I tried again and sincerely thanks for the help! The result is the same though. I´ll just edit the post to add more code info.
Hello there! I´m experimenting with a simple ToDo application and managed to change almost everything I wanted besides the date formatted that´s displayed once the user saves the task.
The task itself is added via the AddToDoActivity class which has the following resumed code:
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);
}
}
Here´s the ToDoItem, that actually reads the info from AddToDoActivity:
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(
"dd/MM/yyyy 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);
}
}
Oh well, after hours tweaking the
public final static SimpleDateFormat FORMAT = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss", Locale.US);
method from ToDoItem, I still cannot successfully convert yyyy-MM-dd to dd/MM/yyyy.
First, I´ve tried the obvious, and changed the expression yyyy-MM-dd to dd/MM/yyyy.
After that, all I got after saving the task was today´s date, even though the date inputted on AddToDoActivity is months or years ahead. If I revert back to yyyy-MM-dd, the date shown on the Task List is the same inputted on AddToDoActivity.
Then I tried to change all mentions of dates on every class to match the exact format that I wanted.
That made everything look good on AddToDoActivity, but again, when I transported the date back to ToDoItem, the app just ignored the previously inputted date and showed today´s date again.
Can anyone help me with this one??
Thanks!!

You are calling setDateString with arguments in the order of year, month, day:
setDateString(c.get(Calendar.YEAR), c.get(Calendar.MONTH),
c.get(Calendar.DAY_OF_MONTH));
But your method has parameters in the order of day, month, year:
private static void setDateString(int dayOfMonth, int monthOfYear, int year) {
...
}
I also think you made some errors while copying your code into the question, since the setDateString method is duplicated and there is no setTimeString method.

Change:
setDateString(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH));
to:
setDateString(c.get(Calendar.DAY_OF_MONTH), c.get(Calendar.MONTH), c.get(Calendar.YEAR));

Modify the code as follows in the ToDoListAdapter file getView method
// TODO - Display Time and Date.
// Hint - use ToDoItem.FORMAT.format(toDoItem.getDate()) to get date and time String
final TextView dateView = (TextView) itemLayout.findViewById(R.id.dateView);
dateView.setText(ToDoItem.FORMAT.format(toDoItem.getDate()));
The output will be something similar the the following
Reference:
Completing UI Activity assignment