Develop Reference

how to install apk programmatically from another app in android

I want to install new version of my app programmatically. with targetSdkVersion=23 app works fine and this is my code:
public class MainActivity extends AppCompatActivity {
private int PERMISSION_REQUEST_STORAGE = 0;
private DownloadController downloadController;
Button btn_download;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn_download = findViewById(R.id.buttonDownload);
btn_download.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
checkStoragePermission();
}
});
}
public void checkStoragePermission() {
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
String url= getApplicationContext().getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS).toString() + "/example.apk";
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.setDataAndType(Uri.parse("file://" + url), "application/vnd.android.package-archive");
String selfPackageName = getApplicationContext().getPackageName();
ComponentName componentName = intent.resolveActivity(getApplicationContext().getPackageManager());
String otherPackageName = (componentName != null ? componentName.getPackageName() : "");
if (MainActivity.this == null || !selfPackageName.equals(otherPackageName)) {
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
}
startActivity(intent);
} else {
requestStoragePermission();
}
}
public void requestStoragePermission() {
ActivityCompat.requestPermissions(
MainActivity.this,
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
PERMISSION_REQUEST_STORAGE);
}
}
but with targetSdkVersion=29 I heard that I have to use FileProvider. I used this instructure but unfortunately it dosent open my apk to install. this is my res=>xml=>file_provider_paths.xml
<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-path
name="external"
path="." />
<external-files-path
name="external_files"
path="." />
<files-path
name="files"
path="." />
</paths>
my manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mysms">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".service.OnComplete" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="com.example.myapp"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/file_provider_paths" />
</provider>
</application>
</manifest>
my mainActivity
public class MainActivity extends AppCompatActivity {
private int PERMISSION_REQUEST_STORAGE = 0;
private DownloadController downloadController;
Button btn_download;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn_download = findViewById(R.id.buttonDownload);
btn_download.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
checkStoragePermission();
}
});
}
public void checkStoragePermission() {
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
File file = new File(getApplicationContext().getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS).toString() + "/example.apk");
Uri uri = FileProvider.getUriForFile(getApplicationContext(), "com.example.myapp", file);
Intent install = new Intent(Intent.ACTION_VIEW);
install.setData(Uri.fromFile(file));
install.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
install.setClassName("com.example.myapp", "com.example.myapp.MainActivity");
install.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
ClipData clipData = new ClipData(new ClipDescription("Meshes", new String[]{ClipDescription.MIMETYPE_TEXT_URILIST}), new ClipData.Item(uri));
install.setClipData(clipData);
startActivity(install);
} else {
requestStoragePermission();
}
}
public void requestStoragePermission() {
ActivityCompat.requestPermissions(
MainActivity.this,
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
PERMISSION_REQUEST_STORAGE);
}
}
I get this error
2019-12-17 00:46:38.035 32020-32020/com.example.myapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.mysms, PID: 32020
android.os.FileUriExposedException: file:///storage/emulated/0/Android/data/com.example.myapp/files/Download/example.apk exposed beyond app through Intent.getData()
at android.os.StrictMode.onFileUriExposed(StrictMode.java:1799)
at android.net.Uri.checkFileUriExposed(Uri.java:2346)
at android.content.Intent.prepareToLeaveProcess(Intent.java:8933)
at android.content.Intent.prepareToLeaveProcess(Intent.java:8894)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1517)
at android.app.Activity.startActivityForResult(Activity.java:4224)
at androidx.fragment.app.FragmentActivity.startActivityForResult(FragmentActivity.java:767)
at android.app.Activity.startActivityForResult(Activity.java:4183)
at androidx.fragment.app.FragmentActivity.startActivityForResult(FragmentActivity.java:754)
at android.app.Activity.startActivity(Activity.java:4507)
at android.app.Activity.startActivity(Activity.java:4475)
at com.example.mysms.MainActivity.checkStoragePermission(MainActivity.java:107)
at com.example.mysms.MainActivity$3.onClick(MainActivity.java:76)
at android.view.View.performClick(View.java:5610)
at android.view.View$PerformClick.run(View.java:22265)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

It seems the problem is that you set wrong uri to intent data:
install.setData(Uri.fromFile(file));
You need to set uri which was created with FileProvider:
Uri uri = FileProvider.getUriForFile(getApplicationContext(), "com.example.myapp", file);
install.setData(uri);
The same is done in the instruction you have found:
val contentUri = FileProvider.getUriForFile(
context,
BuildConfig.APPLICATION_ID + PROVIDER_PATH,
File(destination)
)
val install = Intent(Intent.ACTION_VIEW)
install.data = contentUri

Opencv crashes when initAsync is called

I am using a simple code to open up a camera on opencv the app works fine on LG G Pro but crashes on samsung galaxy S4
Please Note that this activity is called via another activity through intent.
GameActivity.java
public class GameActivity extends AppCompatActivity implements CameraBridgeViewBase.CvCameraViewListener2 {
public static final String MY_TAG = "MY_CUSTOM_MESSAGE";
private JavaCameraView javaCameraView;
private BaseLoaderCallback baseLoaderCallback= new BaseLoaderCallback(this) {
#Override
public void onManagerConnected(int status) {
switch (status){
case LoaderCallbackInterface.SUCCESS:
{
Log.i(MY_TAG, "OPENCV Loaded");
javaCameraView.enableView();
break;
}
default:
super.onManagerConnected(status);
}
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
Log.i(MY_TAG, "onCreate Act 2");
javaCameraView=(JavaCameraView)findViewById(R.id.MyJavaCam);
javaCameraView.setVisibility(SurfaceView.VISIBLE);
javaCameraView.setCvCameraViewListener(this);
}
#Override
protected void onResume() {
super.onResume();
Log.i(MY_TAG, "onResume Act 2");
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_11, this, baseLoaderCallback);
Log.i(MY_TAG, "onResume Act 2 done resuming");
}
#Override
protected void onPause() {
super.onPause();
Log.i(MY_TAG, "onPause Act 2");
}
#Override
public void onCameraViewStarted(int width, int height) {
}
#Override
public void onCameraViewStopped() {
}
#Override
public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
return inputFrame.rgba();
}
#Override
protected void onDestroy() {
super.onDestroy();
if(javaCameraView != null)
{
javaCameraView.disableView();
}
}
}
content_game.xml
<org.opencv.android.JavaCameraView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:visibility="gone"
android:id="#+id/MyJavaCam"
opencv:show_fps="true"
opencv:camera_id="any"
/>
AndroidManifest.xml
<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"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".GameActivity"
android:label="#string/title_activity_game"
android:theme="#style/AppTheme.NoActionBar"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="com.roundcube.gamewithserver.GameActivity" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
Logcat
07-10 04:13:48.107 11233-11233/com.roundcube.gamewithserver E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.roundcube.gamewithserver, PID: 11233
java.lang.RuntimeException: Unable to resume activity {com.roundcube.gamewithserver/com.roundcube.gamewithserver.GameActivity}: java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=org.opencv.engine.BIND }
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3403)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3434)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2772)
at android.app.ActivityThread.access$900(ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1449)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5951)
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:1400)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1195)
Caused by: java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=org.opencv.engine.BIND }
at android.app.ContextImpl.validateServiceIntent(ContextImpl.java:2052)
at android.app.ContextImpl.bindServiceCommon(ContextImpl.java:2160)
at android.app.ContextImpl.bindService(ContextImpl.java:2138)
at android.content.ContextWrapper.bindService(ContextWrapper.java:559)
at org.opencv.android.AsyncServiceHelper.initOpenCV(AsyncServiceHelper.java:24)
at org.opencv.android.OpenCVLoader.initAsync(OpenCVLoader.java:89)
at com.roundcube.gamewithserver.GameActivity.onResume(GameActivity.java:85)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1255)
at android.app.Activity.performResume(Activity.java:6412)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3392)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3434) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2772) 
at android.app.ActivityThread.access$900(ActivityThread.java:177) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1449) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:145) 
at android.app.ActivityThread.main(ActivityThread.java:5951) 
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:1400) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1195) 
On using Logs i figured out that problem in this function call
`OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_11, this, baseLoaderCallback);
Please help me find a solution to this thank you.

Android -have you declared this activity in your AndroidManifest.xml

I'm trying to read some data from an online server and add them dynamically in a ListView. Unfortunately it crashes with an android.content.ActivityNotFoundExceptionbut my activity is declared in the manifest so I don't understand what the problem is.
This is my java file:
public class Marker extends Activity {
// Retrieve COMMENTS from database
String myJSON;
private static final String TAG_RESULTS="result";
private static final String TAG_ID = "id";
private static final String TAG_POI = "poi";
private static final String TAG_USERNAME ="username";
private static final String TAG_COMMENT = "comment";
JSONArray comments = null;
// ListView
private ListView lv;
private ArrayList<String> strArr;
private ArrayAdapter<String> adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_marker);
// Retrieve COMMENTS from database
getData();
}
// Retrieve COMMENTS from database
protected void showList(){
try {
lv = (ListView) findViewById(R.id.list);
strArr = new ArrayList<String>();
JSONObject jsonObj = new JSONObject(myJSON);
comments = jsonObj.getJSONArray(TAG_RESULTS);
for(int i=0;i<comments.length();i++){
JSONObject c = comments.getJSONObject(i);
Integer id = c.getInt(TAG_ID);
String name = c.getString(TAG_POI);
String username = c.getString(TAG_USERNAME);
String comment = c.getString(TAG_COMMENT);
strArr.add("Row:" + comment);
}
adapter = new ArrayAdapter<String>(getApplicationContext(),
android.R.layout.simple_list_item_1, strArr);
lv.setAdapter(adapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
public void getData(){
class GetDataJSON extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
DefaultHttpClient httpclient = new DefaultHttpClient(new BasicHttpParams());
HttpPost httppost = new HttpPost("http://xxxx/comments_out.php");
// Depends on your web service
httppost.setHeader("Content-type", "application/json");
InputStream inputStream = null;
String result = null;
try {
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
inputStream = entity.getContent();
// json is UTF-8 by default
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
result = sb.toString();
} catch (Exception e) {
// Oops
}
finally {
try{if(inputStream != null)inputStream.close();}catch(Exception squish){}
}
return result;
}
#Override
protected void onPostExecute(String result){
myJSON=result;
showList();
}
}
GetDataJSON g = new GetDataJSON();
g.execute();
}
#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_marker_page, 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);
}
}
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:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context="com.example.diana.track.MarkerPage">
<ListView
android:id="#+id/list"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
My Android Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.diana.track" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.USE_CREDENTIALS" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<!--
The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
Google Maps Android API v2, but are recommended.
-->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<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>
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<activity
android:name=".myprofile"
android:label="#string/title_activity_myprofile" >
</activity>
<activity
android:name=".Track"
android:label="#string/title_activity_track" >
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="#string/google_maps_key" />
<activity
android:name=".map"
android:label="#string/title_activity_map" >
</activity>
<activity
android:name=".NotificationView"
android:label="#string/title_activity_notification_view" >
</activity>
<activity
android:name=".ProximityActivity"
android:label="#string/title_activity_proximity" >
</activity>
<activity
android:name=".AddPoi"
android:label="#string/title_activity_add_poi" >
</activity>
<activity
android:name=".ShortPath"
android:label="#string/title_activity_short_path" >
</activity>
<activity
android:name=".profile"
android:label="#string/title_activity_profile" >
</activity>
<activity
android:name=".Marker"
android:label="#string/title_activity_marker" >
</activity>
</application>
</manifest>
and my logcat
07-16 18:34:27.659 8628-9083/com.example.diana.track D/-heap﹕ GC_FOR_ALLOC freed 3574K, 38% free 7122K/11376K, paused 57ms, total 65ms
07-16 18:34:28.059 8628-8628/com.example.diana.track I/Choreographer﹕ Skipped 37 frames! The application may be doing too much work on its main thread.
07-16 18:34:28.440 8628-9075/com.example.diana.track D/-heap﹕ GC_FOR_ALLOC freed 1605K, 35% free 7482K/11376K, paused 34ms, total 34ms
07-16 18:34:29.050 8628-9083/com.example.diana.track D/-heap﹕ GC_FOR_ALLOC freed 501K, 33% free 7648K/11376K, paused 33ms, total 35ms
07-16 18:34:29.050 8628-9083/com.example.diana.track I/dalvikvm-heap﹕ Grow heap (frag case) to 11.080MB for 1048592-byte allocation
07-16 18:34:30.041 8628-8628/com.example.diana.track D/AndroidRuntime﹕ Shutting down VM
07-16 18:34:30.041 8628-8628/com.example.diana.track W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x415478b0)
07-16 18:34:30.061 8628-8628/com.example.diana.track E/AndroidRuntime﹕ FATAL EXCEPTION: main
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.diana.track/com.google.android.gms.maps.model.Marker}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1628)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1424)
at android.app.Activity.startActivityForResult(Activity.java:3390)
at android.app.Activity.startActivityForResult(Activity.java:3351)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:820)
at android.app.Activity.startActivity(Activity.java:3587)
at android.app.Activity.startActivity(Activity.java:3555)
at com.example.diana.track.map.onMarkerClick(map.java:765)
at com.google.android.gms.maps.GoogleMap$10.zza(Unknown Source)
at com.google.android.gms.maps.internal.zzn$zza.onTransact(Unknown Source)
at android.os.Binder.transact(Binder.java:347)
at com.google.android.gms.maps.internal.bd.a(SourceFile:84)
at com.google.maps.api.android.lib6.d.as.b(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.c.e.a(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.n.av.a(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.n.be.a(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.n.bd.a(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.n.bt.d(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.n.ak.onSingleTapConfirmed(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.h.g.onSingleTapConfirmed(Unknown Source)
at com.google.maps.api.android.lib6.gmm6.h.i.handleMessage(Unknown Source)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5214)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
at dalvik.system.NativeStart.main(Native Method)
Any idea what might be the problem?

Android GoogleApiClient application crash at connect()

my app crashes without any error message at googleApiClient.connect(). It never gets to onConnectionFailed. Here's what I have:
at MainActivity
public class MainMenu extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
public static final int REQUEST_LEADERBOARD = 1;
public static int SCREEN_WIDTH;
public static int SCREEN_HEIGHT;
private GoogleApiClient googleApiClient;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
SCREEN_WIDTH = metrics.widthPixels;
SCREEN_HEIGHT = metrics.heightPixels;
googleApiClient = new GoogleApiClient.Builder(this)
.addApi(Games.API).addScope(Games.SCOPE_GAMES)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
}
public void newGame(View view) {
Intent intent = new Intent(MainMenu.this, Game.class);
startActivity(intent);
finish();
}
public void highScore(View view) {
if (isSignedIn()) {
startActivityForResult(Games.Leaderboards.getLeaderboardIntent(googleApiClient,
String.valueOf(R.string.leaderboard_id)), REQUEST_LEADERBOARD);
}
else {
System.out.println("not sign in");
}
}
#Override
public void onConnected(Bundle bundle) {
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
System.out.println("failed");
}
#Override
protected void onStart() {
super.onStart();
googleApiClient.connect(); //here it crashed
}
private boolean isSignedIn() {
return (googleApiClient != null && googleApiClient.isConnected());
}
}
What I've done:
I have generated signed APK, I have sha1 key. I published the app for alpha testing.
manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="my.package"
android:versionCode="2"
android:versionName="1.1">
<uses-sdk android:minSdkVersion="1"/>
<application android:icon="#drawable/ic_launcher" android:label="#string/app_name"
android:theme="#style/Theme.AppCompat.NoActionBar"
android:isGame="true" >
<meta-data
android:name="com.google.android.gms.games.APP_ID"
android:value="#string/app_id" />
<meta-data
android:name="my.package.version"
android:value="com.google.android.gms.version" />
<activity android:name=".activities.MainMenu">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity android:name=".activities.Game"/>
<activity android:name=".activities.GameOver"/>
<activity android:name=".activities.HighScore"/>
</application>
</manifest>
I'm testing it on device with Google Play Service installed. Could you help me?

You should add the internet permission to your manifest.
<uses-permission android:name="android.permission.INTERNET"/>
If you need more help, you should show the error stacktrace.
Hope it helps you!

The solution is simple
<meta-data
android:name="my.package.version"
android:value="com.google.android.gms.version" />
is nonsense.
it should be:
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />

java.lang.ClassCastException: android.app.Application - casting

java.lang.ClassCastException: android.app.Application cannot be cast to com.example.project.DataDevice
My code:
public class Project extends Activity{
private boolean connection = false;
public Tag tagFromIntent = null;
private Button textRead;
private NFCForegroundUtil nfcForegroundUtil;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.project);
nfcForegroundUtil = new NFCForegroundUtil(this);
this.textRead= (Button) findViewById(R.id.button2);
initListeners();
}
private void initListeners() {
textRead.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
if (connection == true)
{
DataDevice dataDevice = (DataDevice) getApplication();
dataDevice.setCurrentTag(tagFromIntent);
IsoDep nfca = IsoDep.get(dataDevice.getCurrentTag());
try
{
byte[] read= new byte[] { 0x00};
byte[] ans = null;
nfca.setTimeout(2000);
nfca.connect();
nfca.setTimeout(2000);
if (nfca.isConnected())
{
nfca.setTimeout(2000);
ans = nfca.transceive(read);
try
{
Thread.sleep(1500);
}
catch (InterruptedException e)
{
e.printStackTrace();
}
}
nfca.close();
String textRead = HexBin.encode(ans);
}
catch (IOException e)
{
Log.i("A", "IOException is: " + e.getMessage());
e.printStackTrace();
}
if (nfca.isConnected())
{
try
{
nfca.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
}
});
}
#Override
protected void onNewIntent(Intent intent)
{
super.onNewIntent(intent);
action = intent.getAction();
tagFromIntent = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
connection = true;
}
public void onPause()
{
super.onPause();
nfcForegroundUtil.disableForeground();
}
public void onResume()
{
super.onResume();
nfcForegroundUtil.enableForeground();
if (!nfcForegroundUtil.getNfc().isEnabled())
{
Toast.makeText(
getApplicationContext(),
"Please activate NFC and press Back to return to the application!",
Toast.LENGTH_LONG).show();
startActivity(new Intent(
android.provider.Settings.ACTION_WIRELESS_SETTINGS));
}
}
}
My manifest code:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.project"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.NFC" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-feature
android:name="android.hardware.nfc"
android:required="true" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme"
android:name="android.app.Application">
<activity
android:name=".StartActivity"
android:label="#string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
<action android:name="android.nfc.action.TECH_DISCOVERED" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:screenOrientation="portrait"
android:name=".Project"
android:label="#string/title_activity_main" />
</application>
My error:
FATAL EXCEPTION: main
java.lang.ClassCastException: android.app.Application cannot be cast to com.example.Project.DataDevice
at com.example.project.Project$1.onClick(Project.java:67)
at android.view.View.performClick(View.java:3511)
at android.view.View$PerformClick.run(View.java:14105)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
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:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
DataDevice class:
public class DataDevice extends Application
{
private Tag currentTag;
public void setCurrentTag(Tag currentTag) {
this.currentTag = currentTag;
}
public Tag getCurrentTag() {
return currentTag;
}
//(...)
}
I looked for answer on stackOverflow, nothing helped.
Anyone knows what's going on?
DataDevice and NFCUtilForeground works good (in other applications).

The android:name attribute in application tag in your manifest file should point to your DataDevice class. Like:
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme"
android:name="your.package.DataDevice">
.........
..........
</application>