Develop Reference

IllegalStateException: Could not execute method for android:onClick

To debug, I tried to migrate to a blank activity still it shows the same error. Can't understand why!
So i have that error:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: thingtranslator2.jalle.com.thingtranslator2, PID: 14918
java.lang.IllegalStateException: Could not execute method for android:onClick
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:390)
at android.view.View.performClick(View.java:6256)
at android.view.View$PerformClick.run(View.java:24704)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6590)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:385)
at android.view.View.performClick(View.java:6256) 
at android.view.View$PerformClick.run(View.java:24704) 
at android.os.Handler.handleCallback(Handler.java:789) 
at android.os.Handler.dispatchMessage(Handler.java:98) 
at android.os.Looper.loop(Looper.java:164) 
at android.app.ActivityThread.main(ActivityThread.java:6590) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) 
Caused by: android.os.FileUriExposedException: file:///storage/emulated/0/Android/data/thingtranslator2.jalle.com.thingtranslator2/cache/tempImage exposed beyond app through ClipData.Item.getUri()
at android.os.StrictMode.onFileUriExposed(StrictMode.java:1958)
at android.net.Uri.checkFileUriExposed(Uri.java:2357)
at android.content.ClipData.prepareToLeaveProcess(ClipData.java:941)
at android.content.Intent.prepareToLeaveProcess(Intent.java:9735)
at android.content.Intent.prepareToLeaveProcess(Intent.java:9741)
at android.content.Intent.prepareToLeaveProcess(Intent.java:9720)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1618)
at android.app.Activity.startActivityForResult(Activity.java:4482)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:767)
at android.app.Activity.startActivityForResult(Activity.java:4440)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:754)
at thingtranslator2.jalle.com.thingtranslator2.MainActivity.getImage(MainActivity.java:157)
at java.lang.reflect.Method.invoke(Native Method) 
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:385) 
at android.view.View.performClick(View.java:6256) 
at android.view.View$PerformClick.run(View.java:24704) 
at android.os.Handler.handleCallback(Handler.java:789) 
at android.os.Handler.dispatchMessage(Handler.java:98) 
at android.os.Looper.loop(Looper.java:164) 
at android.app.ActivityThread.main(ActivityThread.java:6590) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
And this is my MainActivity code :
package thingtranslator2.jalle.com.thingtranslator2;
import android.app.ProgressDialog;
import android.content.ContextWrapper;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Environment;
import android.speech.tts.TextToSpeech;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import com.pixplicity.easyprefs.library.Prefs;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import butterknife.BindView;
import butterknife.ButterKnife;
import okhttp3.MediaType;
import okhttp3.RequestBody;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import thingtranslator2.jalle.com.thingtranslator2.Rest.ApiInterface;
import thingtranslator2.jalle.com.thingtranslator2.Rest.Translation;
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
public
#BindView(R.id.txtTranslation)
TextView txtTranslation;
public
#BindView(R.id.spinner)
Spinner spinner;
public
#BindView(R.id.imgPhoto)
ImageButton imgPhoto;
public
#BindView(R.id.imgSpeaker)
ImageButton btnSpeaker;
public Boolean speakerOn, firstRun;
public TextToSpeech tts;
public List<String> languages = new ArrayList<String>();
public ArrayList<Language> languageList = new ArrayList<Language>();
public ArrayAdapter<Language> spinnerArrayAdapter;
public Language selectedLanguage;
public static final int PICK_IMAGE_ID = 234; // the number doesn't matter
thingtranslator2.jalle.com.thingtranslator2.Tools.MarshMallowPermission marshMallowPermission = new thingtranslator2.jalle.com.thingtranslator2.Tools.MarshMallowPermission(this);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
ButterKnife.bind(this);
btnSpeaker = (ImageButton)findViewById(R.id.imgSpeaker);
imgPhoto = (ImageButton)findViewById(R.id.imgPhoto);
spinner = (Spinner)findViewById(R.id.spinner);
txtTranslation = (TextView)findViewById(R.id.txtTranslation);
//init our Shared preferences helper
new Prefs.Builder()
.setContext(this)
.setMode(ContextWrapper.MODE_PRIVATE)
.setPrefsName(getPackageName())
.setUseDefaultSharedPreference(true)
.build();
// Prefs.clear();
firstRun = Prefs.getBoolean("firstRun", true);
spinner.setOnItemSelectedListener(this);
tts = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
#Override
public void onInit(int status) {
if (status != TextToSpeech.ERROR) {
fillSpinner();
}
}
});
if (firstRun) {
Prefs.putBoolean("firstRun", false);
Prefs.putBoolean("speakerOn", true);
Prefs.putString("langCode", "bs");
}
setSpeaker();
}
private void setSpeaker() {
int id = Prefs.getBoolean("speakerOn", false) ? R.drawable.ic_volume : R.drawable.ic_volume_off;
btnSpeaker.setImageBitmap(BitmapFactory.decodeResource(getResources(), id));
}
public void ToogleSpeaker(View v) {
Prefs.putBoolean("speakerOn", !Prefs.getBoolean("speakerOn", false));
setSpeaker();
Toast.makeText(getApplicationContext(), "Speech " + (Prefs.getBoolean("speakerOn", true) ? "On" : "Off"), Toast.LENGTH_SHORT);
}
private void fillSpinner() {
Iterator itr = tts.getAvailableLanguages().iterator();
while (itr.hasNext()) {
Locale item = (Locale) itr.next();
languageList.add(new Language(item.getDisplayName(), item.getLanguage()));
}
//Sort that array
Collections.sort(languageList, new Comparator<Language>() {
#Override
public int compare(Language o1, Language o2) {
return o1.getlangCode().compareTo(o2.getlangCode());
}
});
spinnerArrayAdapter = new ArrayAdapter<Language>(this, R.layout.spinner_item, languageList);
spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(spinnerArrayAdapter);
String def = Prefs.getString("langCode", "bs");
for (Language lang : languageList) {
if (lang.getlangCode().equals(def)) {
spinner.setSelection(languageList.indexOf(lang));
}
}
}
//Get image from Gallery or Camera
public void getImage(View v) {
if (!marshMallowPermission.checkPermissionForCamera()) {
marshMallowPermission.requestPermissionForCamera();
} else {
if (!marshMallowPermission.checkPermissionForExternalStorage()) {
marshMallowPermission.requestPermissionForExternalStorage();
} else {
Intent chooseImageIntent = thingtranslator2.jalle.com.thingtranslator2.Tools.ImagePicker.getPickImageIntent(getApplicationContext());
startActivityForResult(chooseImageIntent, PICK_IMAGE_ID);
}
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (data == null) return;
switch (requestCode) {
case PICK_IMAGE_ID:
Bitmap bitmap = thingtranslator2.jalle.com.thingtranslator2.Tools.ImagePicker.getImageFromResult(this, resultCode, data);
imgPhoto.setImageBitmap(null);
imgPhoto.setBackground(null);
imgPhoto.setImageBitmap(bitmap);
imgPhoto.invalidate();
imgPhoto.postInvalidate();
File file = null;
try {
file = savebitmap(bitmap, "pic.jpeg");
} catch (IOException e) {
e.printStackTrace();
}
uploadImage(file);
break;
default:
super.onActivityResult(requestCode, resultCode, data);
break;
}
}
private void uploadImage(File file) {
RequestBody body = RequestBody.create(MediaType.parse("image/*"), file);
RequestBody langCode1 = RequestBody.create(MediaType.parse("text/plain"), selectedLanguage.langCode);
final ProgressDialog progress = new ProgressDialog(this);
progress.setMessage("Processing image...");
progress.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progress.setIndeterminate(true);
progress.show();
ApiInterface mApiService = ApiInterface.retrofit.create(ApiInterface.class);
Call<Translation> mService = mApiService.upload(body, langCode1);
mService.enqueue(new Callback<Translation>() {
#Override
public void onResponse(Call<Translation> call, Response<Translation> response) {
progress.hide();
Translation result = response.body();
txtTranslation.setText(result.Translation);
txtTranslation.invalidate();
if (Prefs.getBoolean("speakerOn", true)) {
tts.speak(result.Translation, TextToSpeech.QUEUE_FLUSH, null);
}
}
#Override
public void onFailure(Call<Translation> call, Throwable t) {
call.cancel();
progress.hide();
Toast.makeText(getApplicationContext(), "Error: " + t.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
public static File savebitmap(Bitmap bmp, String fName) throws IOException {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 60, bytes);
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + fName);
f.createNewFile();
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
fo.close();
return f;
}
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
selectedLanguage = (Language) spinner.getSelectedItem();
// langCode = languages.get(position);
tts.setLanguage(Locale.forLanguageTag(selectedLanguage.langCode));
Prefs.putString("langCode", selectedLanguage.langCode);
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
}
activity_main.xml file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorBlack"
android:paddingBottom="8dp"
android:paddingLeft="8dp"
android:paddingRight="8dp"
android:paddingTop="8dp"
tools:context="thingtranslator2.jalle.com.thingtranslator2.MainActivity">
<LinearLayout
android:id="#+id/layout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:weightSum="1">
<Spinner
android:id="#+id/spinner"
android:layout_width="100dp"
android:layout_height="match_parent"
android:layout_marginBottom="16dp"
android:layout_weight="0.91"
android:gravity="bottom|end" />
<ImageButton
android:id="#+id/imgSpeaker"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_gravity="end"
android:layout_weight=".10"
android:background="#android:color/transparent"
android:onClick="ToogleSpeaker"
android:scaleType="fitCenter"
app:srcCompat="#drawable/ic_volume"
android:contentDescription="#string/todo" />
</LinearLayout>
<TextView
android:id="#+id/txtTranslation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/layout1"
android:layout_centerHorizontal="true"
android:layout_marginBottom="16dp"
android:gravity="center_horizontal"
android:onClick="getImage"
android:text="#string/select_image_from_n_gallery_or_take_new_photo"
android:textColor="#android:color/white"
android:textSize="26sp"
tools:text="message" />
<ImageButton
android:id="#+id/imgPhoto"
android:layout_width="fill_parent"
android:layout_height="400dp"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_below="#id/txtTranslation"
android:background="#drawable/takephoto"
android:onClick="getImage" />
</RelativeLayout>
AndroidMnifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="thingtranslator2.jalle.com.thingtranslator2">
<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity" >
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Starting Android Camera with Intent crashes

i am new in the programming for Android. And I get a inexplicable Exception in my App and i hope you can help me. The app covers the following Use-Case:
The user press on the "take photo" Button
The Google Camera will be open
The Image will be save in the storage of the device
The Path, where the image stored will be listet in a listview
The user can click again on the button "take photo" (goto 2)
At firsttime the user can take photo succesful and the path will be show correctly in the app. But in case of clicking again the user can take a photo but the app crashes without a Exception when i want to save the image.
Scanning.java
package de.des;
import android.content.Intent;
import android.content.res.Configuration;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
import de.auftrag.R;
public class Scanning extends AppCompatActivity {
private List<String> pathlist;
private ArrayAdapter<String> adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scanning);
final ListView listview = (ListView) findViewById(R.id.listView);
mimageView = (ImageView) this.findViewById(R.id.imageView);
pathlist = new ArrayList<>();
adapter = new ArrayAdapter<String>(this,R.layout.mylist, pathlist);
listview.setAdapter(adapter);
}
private static final int TAKE_PHOTO_CODE = 1;
public void takePhoto(View view) {
File file = new File(Environment.getExternalStorageDirectory(), "fname_" +
String.valueOf(System.currentTimeMillis()) + ".jpg");
try {
file.createNewFile();
this.pathlist.add(file.getAbsolutePath());
this.adapter.notifyDataSetChanged();
} catch (IOException e) {
Log.d("Scanning",e.getMessage());
}
Uri outputFileUri = Uri.fromFile(file);
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivityForResult(cameraIntent, 3);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
}
}
activity_scanning.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="de.des.Scanning">
<Button
android:id="#+id/btnTakePhoto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/str_take_foto"
android:onClick="takePhoto"/>
<Button
android:id="#+id/btnSelectFile"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/str_read_file"
android:onClick="selectFile"
android:layout_below="#+id/btnTakePhoto"
android:layout_alignParentStart="true" />
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listView"
android:layout_below="#+id/btnSelectFile"
android:layout_alignParentStart="true"
android:layout_marginTop="73dp" />
</RelativeLayout>
AndroidMainifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="de.auftrag">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA"/>
<application
android:allowBackup="true"
android:icon="#mipmap/logo"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name="de.des.Scanning"
android:configChanges="orientation|screenSize"/>
<activity android:name="de.des.ObjektdatenMap" />
</application>
</manifest>
Best wishes
Dominik

Try this:
private static final int TAKE_PHOTO_CODE = 1;
public void takePhoto(View view) {
File file = new File(Environment.getExternalStorageDirectory(), "fname_" +
String.valueOf(System.currentTimeMillis()) + ".jpg");
Uri outputFileUri = Uri.fromFile(file);
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra("pic_path", file.getAbsolutePath());
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivityForResult(cameraIntent, TAKE_PHOTO_CODE);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case TAKE_PHOTO_CODE:
if(resultCode == Activity.RESULT_OK) {
Uri imageUri = data.getData();
String path = data.getExtras().getString("pic_path");
pathlist.add(path);
adapter.notifyDataSetChanged();
}
break;
}
}

Getting Open Failed EACCES(Permission Denied)

I want to write data into a SD card but I am getting the following error: Failed open failed: EACCES (Permission denied).
The Android version I am working on is jelly bean(4.3).
I have also given permission in manifest file.
Here is my code:
package com.example.androidsdcard;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity {
// GUI controls
EditText txtData;
Button btnWriteSDFile;
Button btnReadSDFile;
Button btnClearScreen;
Button btnClose;
File sample=null;
String SDCard_Path="/mnt/extsd";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// bind GUI elements with local controls
txtData = (EditText) findViewById(R.id.txtData);
txtData.setHint("Enter some lines of data here...");
btnWriteSDFile = (Button) findViewById(R.id.btnWriteSDFile);
btnWriteSDFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
File storageDir = new File(SDCard_Path);
String sample1 = Environment.getExternalStorageDirectory().getPath();
Toast.makeText(MainActivity.this,sample1, Toast.LENGTH_LONG).show();
if(sample == null)
{
Toast.makeText(MainActivity.this,"Sample == null executed", Toast.LENGTH_LONG).show();
}
else
Toast.makeText(MainActivity.this,"Sample == null skipped", Toast.LENGTH_LONG).show();
if(storageDir.isDirectory())
{
String[] dirList = storageDir.list();
if(dirList==null)
{
Toast.makeText(getBaseContext(),"Failed to detect SD card",Toast.LENGTH_SHORT).show();
return;
}
else
Toast.makeText(getBaseContext(),"SD Card Detected",Toast.LENGTH_SHORT).show();
}
try {
File myFile = new File("/mnt/extsd/MedeQuip.txt");
/* if(myFile.createNewFile()==false)
{
Toast.makeText(getBaseContext(),"Unable to create File'",Toast.LENGTH_SHORT).show();
return;
}
else
Toast.makeText(getBaseContext(),"File Created'",Toast.LENGTH_SHORT).show();
*/ FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut);
myOutWriter.append(txtData.getText());
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),"Done writing SD mysdfile.txt'",Toast.LENGTH_SHORT).show();
} catch (Exception e)
{
Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_SHORT).show();
}
}// onClick
}); // btnWriteSDFile
btnReadSDFile = (Button) findViewById(R.id.btnReadSDFile);
btnReadSDFile.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
// write on SD card file data in the text box
try
{
File myFile = new File(SDCard_Path+"/MedeQuip.txt");
FileInputStream fIn = new FileInputStream(myFile);
BufferedReader myReader = new BufferedReader(
new InputStreamReader(fIn));
String aDataRow = "";
String aBuffer = "";
while ((aDataRow = myReader.readLine()) != null) {
aBuffer += aDataRow + "\n";
}
txtData.setText(aBuffer);
myReader.close();
Toast.makeText(getBaseContext(),"Done reading SD 'MedeQuip.txt'",Toast.LENGTH_SHORT).show();
}
catch (Exception e)
{
Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_SHORT).show();
}
}// onClick
}); // btnReadSDFile
btnClearScreen = (Button) findViewById(R.id.btnClearScreen);
btnClearScreen.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// clear text box
txtData.setText("");
}
}); // btnClearScreen
btnClose = (Button) findViewById(R.id.btnClose);
btnClose.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// clear text box
finish();
}
}); // btnClose
}// onCreate
}// AndSDcard
Here is my xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/txtData"
android:layout_width="fill_parent"
android:layout_height="180px"
android:textSize="18sp" />
<Button
android:id="#+id/btnWriteSDFile"
android:layout_width="143px"
android:layout_height="44px"
android:layout_alignParentLeft="true"
android:layout_below="#+id/txtData"
android:layout_marginTop="60dp"
android:text="1. Write SD File" />
<Button
android:id="#+id/btnClearScreen"
android:layout_width="141px"
android:layout_height="42px"
android:layout_alignBaseline="#+id/btnWriteSDFile"
android:layout_alignBottom="#+id/btnWriteSDFile"
android:layout_marginLeft="30dp"
android:layout_toRightOf="#+id/btnWriteSDFile"
android:text="2. Clear Screen" />
<Button
android:id="#+id/btnReadSDFile"
android:layout_width="140px"
android:layout_height="42px"
android:layout_alignTop="#+id/btnWriteSDFile"
android:layout_marginLeft="32dp"
android:layout_toRightOf="#+id/btnClearScreen"
android:text="3. Read SD File" />
<Button
android:id="#+id/btnClose"
android:layout_width="141px"
android:layout_height="43px"
android:layout_alignTop="#+id/btnClearScreen"
android:layout_marginLeft="61dp"
android:layout_toRightOf="#+id/btnReadSDFile"
android:text="4. Close" />
</RelativeLayout>
Here is my manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.androidsdcard"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
</manifest>

You cannot assume external storage will always be at "/mnt/extsd". Very rarely will this be the case as it is up to the OEM where the mount points are. Use the standard APIs from the Context object to get the correct locations of interest: Context.getExternalFilesDir() and Context.getExternalFilesDirs().

the problem is with jelly bean
this work for me
String path = null;
if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT){
path = getActivity().getCacheDir() + File.separator + "name";
} else{
path = Environment.getExternalStorageDirectory() + File.separator + "name";
}

FileNotFoundException when try to generate PDF in android

In here i'm try to generate a pdf file in android, but in the run time i get this execption
ioException:java.io.FileNotFoundException: /storage/sdcard/PDF/Demo.pdf: openfailed: ENOENT (No such file or directory)
this is my code
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Font;
import com.lowagie.text.HeaderFooter;
import com.lowagie.text.Image;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.PdfWriter;
public class MainActivity extends Activity {
private Button createPDF , openPDF;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
createPDF = (Button)findViewById(R.id.button1);
createPDF.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
createPDF();
}
});
openPDF = (Button)findViewById(R.id.button2);
openPDF.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
openPdf();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public void createPDF(){
Document doc =new Document();
try {
String parth = Environment.getExternalStorageDirectory().getAbsolutePath() + "/PDF";
File dir = new File(parth);
if(!dir.exists())
dir.mkdir();
Log.d("PDFCreater", "PDF PARTH "+parth);
File file = new File(dir,"demo.pdf");
Log.d("PDFCreater", "Create");
FileOutputStream fOut = new FileOutputStream(file);
Log.d("PDFCreater", "1");
PdfWriter.getInstance(doc, fOut);
Log.d("PDFCreater", "2");
doc.open();
Log.d("PDFCreater", "open");
Paragraph p1= new Paragraph("Customer History");
Font paraFont = new Font(Font.HELVETICA);
paraFont.setSize(16);
p1.setAlignment(Paragraph.ALIGN_CENTER);
p1.setFont(paraFont);
doc.add(p1);
Log.d("PDFCreater", "add");
/* Inserting Image in PDF */
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Bitmap bitmap = BitmapFactory.decodeResource(getBaseContext().getResources(), R.drawable.apple);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100 , stream);
Image myImg = Image.getInstance(stream.toByteArray());
myImg.setAlignment(Image.MIDDLE);
//add image to document
doc.add(myImg);
Phrase footerText = new Phrase("This is an example of a footer");
HeaderFooter pdfFooter = new HeaderFooter(footerText, false);
doc.setFooter(pdfFooter);
Toast.makeText(getApplicationContext(), "Created...", Toast.LENGTH_LONG).show();
} catch (DocumentException de) {
Log.e("PDFCreator", "DocumentException:" + de);
} catch (IOException e) {
Log.e("PDFCreator", "ioException:" + e);
}
finally
{
doc.close();
}
}
void openPdf()
{
Intent intent = new Intent(Intent.ACTION_VIEW);
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/PDF";
File file = new File(path, "demo.pdf");
intent.setDataAndType( Uri.fromFile( file ), "application/pdf" );
startActivity(intent);
}
}
here is my xml file
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hello_world" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/textView1"
android:layout_below="#+id/textView1"
android:layout_marginLeft="56dp"
android:layout_marginTop="50dp"
android:text="Create" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/button1"
android:layout_below="#+id/button1"
android:layout_marginTop="38dp"
android:text="Open" />
</RelativeLayout>
Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.isuru.mypdf"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.isuru.mypdf.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
I think that the exception throws on this line
FileOutputStream fOut = new FileOutputStream(file);
please help me , thank you !

Have you declared this permission in the android manifest file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

Add read and write permission in manifest file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
Check here:
Getting file from sdcard with Uri

how to give sharing option to the grid images

i am creating an application which i want share images to any social platform.
i used a grid view successfully, which shows all the images and can be viewed in specific full image activity to show the user selected image.
i want to add a social share function to the applications which get the image location and share to the social platform.
Here is my MainActivity.java
package com.jai.desimeme;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
public class MainActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView gridView = (GridView) findViewById(R.id.grid_view);
// Instance of ImageAdapter Class
gridView.setAdapter(new ImageAdapter(this));
gridView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
// Sending image id to FullScreenActivity
Intent i = new Intent(getApplicationContext(), FullImageActivity.class);
// passing array index
i.putExtra("id", position);
startActivity(i);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
with my activity_main.XML
<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/grid_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="10dp"
android:gravity="center"
android:horizontalSpacing="5dp"
android:numColumns="4"
android:stretchMode="columnWidth"
android:verticalSpacing="5dp" >
</GridView>
i used the FullImageActivity.java for the preview of image selected //here i want to add the sharing link.
package com.jai.desimeme;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.MenuItem;
import android.widget.ImageView;
#SuppressLint("SdCardPath")
public class FullImageActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.full_image);
// get intent data
Intent i = getIntent();
// Selected image id
int position = i.getExtras().getInt("id");
ImageAdapter imageAdapter = new ImageAdapter(this);
ImageView imageView = (ImageView) findViewById(R.id.full_image_view);
imageView.setImageResource(imageAdapter.mThumbIds[position]);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
File sd = Environment.getExternalStorageDirectory();
String fileName = "test.png";
File dest = new File(sd, fileName);
try {
FileOutputStream out;
out = new FileOutputStream(dest);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
switch (item.getItemId()) {
case R.id.item:
Uri uri = Uri.fromFile(dest);
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
shareIntent.setType("image/jpeg");
startActivity(Intent.createChooser(shareIntent, getResources().getText(R.string.share)));
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
for above code i used this full_image.xml activity.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/full_image_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<ImageView android:id="#+id/full_image_view"
android:layout_width="100dp" android:layout_height="100dp"
android:src="#drawable/image_border"
style="#style/myImageView" />
</LinearLayout>
in here i created ImageAdapter.java to store the image files.
package com.jai.desimeme;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
public class ImageAdapter extends BaseAdapter {
private Context mContext;
// Keep all Images in array
public Integer[] mThumbIds = {
R.drawable.rage_0001,
...
R.drawable.rage_178,
};
// Constructor
public ImageAdapter(Context c){
mContext = c;
}
#Override
public int getCount() {
return mThumbIds.length;
}
#Override
public Object getItem(int position) {
return mThumbIds[position];
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView = new ImageView(mContext);
imageView.setImageResource(mThumbIds[position]);
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setLayoutParams(new GridView.LayoutParams(70, 70));
return imageView;
}
}
and here is my AndroidManifest.XML
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.jai.desimeme"
android:versionCode="1"
android:versionName="1.1.3" android:installLocation="auto">
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" android:permission="android.permission.WRITE_EXTERNAL_STORAGE">
<activity
android:name="com.jai.desimeme.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="image/*" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND_MULTIPLE" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="image/*" />
</intent-filter>
</activity>
<!-- FullImageActivity -->
<activity android:name=".FullImageActivity"></activity>
<activity android:name=".About" android:theme="#android:style/Theme.Dialog"> </activity>
</application>
guide me how to add sharing link to this application, i tried so many ways but end up in errors.

You can use this on any click event of your UI element.
BitmapDrawable bm = (BitmapDrawable) yourImageView.getDrawable();
Bitmap mysharebmp = bm.getBitmap();
String path = Images.Media.insertImage(getContentResolver(),
mysharebmp, "MyImage", null);
Uri uri = Uri.parse(path);
Intent sharingIntent = new Intent(Intent.ACTION_SEND);
sharingIntent.setType("image/png");
sharingIntent.putExtra(Intent.EXTRA_STREAM, uri);
startActivity(Intent.createChooser(sharingIntent,
"Share image using"));