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Never Ending Background Service - Java for Android

I wanted to make this service a never ending service, even if the app is killed by the user. That service starts with the app - when it is background, the service still runs-, but when I clear the background tasks on phone, it is also killed. I wanted that final part to be different, wanted this service to keep running on the device... Is that possible? Thanks for the help
public class BackgroundService extends Service {
public static Runnable runnable = null;
public Context context = this;
public Handler handler = null;
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
final PackageManager manager = getPackageManager();
//Packages instalados no dispositivo
List<ApplicationInfo> packages = manager.getInstalledApplications(PackageManager.GET_META_DATA);
for (ApplicationInfo info : packages) {
Log.i("Info", "Installed package:" + info.packageName);
}
for (int i = 0; i < packages.size(); i++) {
if(packages.get(i).sourceDir.startsWith("/data/app/")){
//Non System Apps
Log.i("Info", "Installed package /NON SYSTEM/:" + packages.get(i).packageName);
}else{
//system Apps
Log.i("Info", "Installed package !/SYSTEM/!:" + packages.get(i).packageName);
}}
handler = new Handler();
runnable = new Runnable() {
public void run() {
final ActivityManager am = (ActivityManager) getBaseContext().getSystemService(ACTIVITY_SERVICE);
String currentApp ="";
// The first in the list of RunningTasks is always the foreground task.
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
UsageStatsManager usm = (UsageStatsManager) getSystemService(USAGE_STATS_SERVICE);
long time = System.currentTimeMillis();
List<UsageStats> appList = usm.queryUsageStats(UsageStatsManager.INTERVAL_DAILY,
time - 1000 * 1000, time);
if (appList != null && appList.size() > 0) {
SortedMap<Long, UsageStats> mySortedMap = new TreeMap<Long, UsageStats>();
for (UsageStats usageStats : appList) {
mySortedMap.put(usageStats.getLastTimeUsed(),
usageStats);
}
if (mySortedMap != null && !mySortedMap.isEmpty()) {
currentApp = mySortedMap.get(
mySortedMap.lastKey()).getPackageName();
}
}
} else {
ActivityManager.RunningTaskInfo foregroundTaskInfo = am.getRunningTasks(1).get(0);
currentApp = foregroundTaskInfo.topActivity.getPackageName();
}
boolean ApiLigaIsRunning = false;
if (currentApp.contains("maps")) {
ApiLigaIsRunning = true;
Log.i("CHOOSEN APP IS RUNNING ","YES!!!!!!!!!!! " + currentApp);
Handler handler2 = new Handler();
final String finalCurrentApp = currentApp;
handler2.postDelayed(new Runnable() {
public void run() {
Intent openMe = new Intent(getApplicationContext(), LoginActivity.class);
openMe.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(openMe);
am.killBackgroundProcesses(finalCurrentApp);
}
}, 200);
}
Toast.makeText(context, "Service is running", Toast.LENGTH_LONG).show();
List<ActivityManager.RunningAppProcessInfo> appProcesses = am.getRunningAppProcesses();
for(ActivityManager.RunningAppProcessInfo appProcess : appProcesses){
if(appProcess.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND){
if (ApiLigaIsRunning == true)
Log.i("Foreground App ", appProcess.processName);
else
Log.i("Not Working! ", appProcess.processName);
}
handler.postDelayed(runnable,200);
}
}
};
handler.postDelayed(runnable, 200);
}
#Override
public void onDestroy() {
Toast.makeText(this, "Service stopped", Toast.LENGTH_LONG).show();
}
}
Here is my Manifest file :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="***************">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
<uses-permission android:name="android.permission.REAL_GET_TASKS" />
<uses-permission android:name="android.permission.GET_TASKS"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.GET_TOP_ACTIVITY_INFO"/>
<uses-permission android:name="android.permission.INSTANT_APP_FOREGROUND_SERVICE"/>
<uses-permission android:name="android.permission.PACKAGE_USAGE_STATS" tools:ignore="ProtectedPermissions" />
<application
android:allowBackup="true"
android:icon="#mipmap/icon"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".LoginActivity"
android:theme="#style/AppTheme.Dark">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".BackgroundService"
android:exported="true"
android:enabled="true"
/>
</application>

Never Ending Background Service is not possible but you can Limit Close Service
cause this will Take More Battery which Not Allowed
1- Use Forground Service
this will make service to be run with Notification Like Music App
2- Use START_STICKY
this will make your service start when it Killed

It was possible with a Broadcoast Receiver. But since Oreo (API 26) you can only perform that with a Job Scheduler.
In most cases, apps can work around these limitations by using
JobScheduler jobs. This approach lets an app arrange to perform work
when the app isn't actively running, but still gives the system the
leeway to schedule these jobs in a way that doesn't affect the user
experience. Android 8.0 offers several improvements to JobScheduler
that make it easier to replace services and broadcast receivers with
scheduled jobs.
See more at : https://developer.android.com/about/versions/oreo/background

"signInSilently(): failure" when trying to sign in to GooglePlay Game Services with LibGDX

I have been trying to add Google Game Services to my LibGDX project for the past 3 days now at first I tried the LibGDX tutorials but all of them seem to be outdated. Then I was advised to use the Google Game Services official code
LibGDX: How to Implement Google Play Game Services?
I imported the sample project TypeANumber and tried to add the code to my project but when I try to sign in I'm getting the "signInSilently(): failure" error and it crashes when I try to open the leaderboards and achievements on both the debug and signed APKS.
Here is my code:
AndroidLauncher:
private void signInSilently() {
Log.d(TAG, "signInSilently()");
mGoogleSignInClient.silentSignIn().addOnCompleteListener(this,
new OnCompleteListener<GoogleSignInAccount>() {
#Override
public void onComplete(#NonNull Task<GoogleSignInAccount> task) {
if (task.isSuccessful()) {
Log.d(TAG, "signInSilently(): success");
onConnected(task.getResult());
} else {
Log.d(TAG, "signInSilently(): failure", task.getException());
onDisconnected();
}
}
});
}
#Override
public void showLeaderboards(){
runOnUiThread(new Runnable() {
public void run() {
onShowLeaderboardsRequested();
}
});
}
#Override
public void showAchievements(){
runOnUiThread(new Runnable() {
public void run() {
onShowAchievementsRequested();
}
});
}
Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.harrybanda.blaster" >
<uses-sdk android:minSdkVersion="14" android:targetSdkVersion="27" />
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<meta-data android:name="com.google.android.gms.games.APP_ID"
android:value="#string/app_id" />
<meta-data android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/GdxTheme" >
<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
android:theme="#android:style/Theme.Translucent" />
<activity
android:name="com.harrybanda.blaster.AndroidLauncher"
android:label="#string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
In my build.gradle i added:
compile "com.google.android.gms:play-services-games:11.8.0"
compile "com.google.android.gms:play-services-auth:11.8.0"
Logcat:
01-07 09:56:30.011 618-618/? D/Blaster: onResume()
01-07 09:56:30.011 618-618/? D/Blaster: signInSilently()
01-07 09:56:30.512 618-618/? D/Blaster: signInSilently(): failure
com.google.android.gms.common.api.b: 4:
at com.google.android.gms.common.internal.y.a(Unknown Source)
at com.google.android.gms.common.internal.ae.a(Unknown Source)
at com.google.android.gms.common.internal.af.a(Unknown Source)
at com.google.android.gms.common.api.internal.BasePendingResult.c(Unknown Source)
at com.google.android.gms.common.api.internal.BasePendingResult.a(Unknown Source)
at com.google.android.gms.auth.api.signin.internal.g.a(Unknown Source)
at com.google.android.gms.auth.api.signin.internal.r.onTransact(Unknown Source)
at android.os.Binder.execTransact(Binder.java:451)
01-07 09:56:30.512 618-618/? D/Blaster: onDisconnected()

From 1st look of your question, It seems that you're keeping meta data outside the application tag but should be inside application tag in AndroidManifest.xml file
Like this :
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/GdxTheme" >
<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
android:theme="#android:style/Theme.Translucent" />
<activity
android:name="com.harrybanda.blaster.AndroidLauncher"
android:label="#string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize">
<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.games.APP_ID"
android:value="#string/app_id" />
<meta-data android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version"/>
</application>
StatusCode 4 (SIGN_IN_REQUIRED) error means client attempted to
connect to the service but the user is not signed in.
Here is my AndroidLauncher class
public class AndroidLauncher extends AndroidApplication implements MyServices {
private GoogleSignInClient mGoogleSignInClient;
private LeaderboardsClient mLeaderboardsClient;
private PlayersClient mPlayersClient;
private static final String TAG=AndroidLauncher.class.getSimpleName();
private static final int RC_SIGN_IN = 9001;
private static final int RC_UNUSED = 5001;
private static final int RC_LEADERBOARD_UI = 9004;
private String greetingMsg="Welcome, ";
private boolean greetingDisplayed;
#Override
protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
greetingDisplayed=false;
AndroidApplicationConfiguration config = new AndroidApplicationConfiguration();
initialize(new GdxGame(this), config);
mGoogleSignInClient = GoogleSignIn.getClient(this,
new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_GAMES_SIGN_IN).build());
}
#Override
public boolean isSignedIn() {
return GoogleSignIn.getLastSignedInAccount(this) != null;
}
private void signInSilently() {
mGoogleSignInClient.silentSignIn().addOnCompleteListener(this,
new OnCompleteListener<GoogleSignInAccount>() {
#Override
public void onComplete(#NonNull Task<GoogleSignInAccount> task) {
if (task.isSuccessful()) {
greetingMsg="Welcome back, ";
onConnected(task.getResult());
} else {
onDisconnected();
}
}
});
}
private void onConnected(GoogleSignInAccount googleSignInAccount) {
mLeaderboardsClient = Games.getLeaderboardsClient(this, googleSignInAccount);
mPlayersClient = Games.getPlayersClient(this, googleSignInAccount);
mPlayersClient.getCurrentPlayer()
.addOnCompleteListener(new OnCompleteListener<Player>() {
#Override
public void onComplete(#NonNull Task<Player> task) {
String displayName;
if (task.isSuccessful()) {
displayName = task.getResult().getDisplayName();
} else {
Exception e = task.getException();
handleException(e, getString(R.string.players_exception));
displayName = "???";
}
if(!greetingDisplayed)
welcomeMessage(displayName);
}
});
}
private void welcomeMessage(String name){
Toast toast = Toast.makeText(this, greetingMsg + name, Toast.LENGTH_LONG);
toast.setGravity(Gravity.TOP, 0, 0);
View view = toast.getView();
TextView text = (TextView) view.findViewById(android.R.id.message);
toast.show();
greetingDisplayed=true;
}
#Override
public void startSignInIntent() {
startActivityForResult(mGoogleSignInClient.getSignInIntent(), RC_SIGN_IN);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
if (requestCode == RC_SIGN_IN) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(intent);
try {
GoogleSignInAccount account = task.getResult(ApiException.class);
greetingMsg="Welcome, ";
onConnected(account);
} catch (ApiException apiException) {
String message = apiException.getMessage();
if (message == null || message.isEmpty()) {
message = getString(R.string.signin_other_error);
}
onDisconnected();
}
}
}
#Override
protected void onResume() {
super.onResume();
signInSilently();
}
private void signOut() {
if (!isSignedIn()) {
Log.w(TAG, "signOut() called, but was not signed in!");
return;
}
mGoogleSignInClient.signOut().addOnCompleteListener(this,
new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
boolean successful = task.isSuccessful();
Log.d(TAG, "signOut(): " + (successful ? "success" : "failed"));
onDisconnected();
}
});
}
private void onDisconnected() {
mLeaderboardsClient = null;
mPlayersClient = null;
}
#Override
public void submitScore(int score){
if(isSignedIn())
mLeaderboardsClient.submitScore(getString(R.string.leaderboard_id), score);
}
#Override
public void showLeaderBoard() {
if(isSignedIn())
mLeaderboardsClient.getLeaderboardIntent(getString(R.string.leaderboard_id))
.addOnSuccessListener(new OnSuccessListener<Intent>() {
#Override
public void onSuccess(Intent intent) {
startActivityForResult(intent, RC_LEADERBOARD_UI);
}
});
}
private void handleException(Exception e, String details) {
int status = 0;
if (e instanceof ApiException) {
ApiException apiException = (ApiException) e;
status = apiException.getStatusCode();
}
String message = getString(R.string.status_exception_error, details, status, e);
new AlertDialog.Builder(this)
.setMessage(message)
.setNeutralButton(android.R.string.ok, null)
.show();
}
}
And MyServices interface
interface MyServices{
void startSignInIntent();
boolean isSignedIn();
void showLeaderBoard();
void submitScore(int score);
}
First time I call startSignInIntent() of interface by myself after user install app.

I think I got it.
This is from Google Play Games Services official docs:
You can call silentSignIn() to retrieve the currently signed-in
player’s account, and try to sign players in without displaying a user
interface if they have successfully signed in to your app on a
different device.
...
If the silent sign-in attempt fails, you can optionally send the sign-in intent to display a sign-in user interface, as described in Performing interactive sign-in.
...
If the silent sign-in attempt fails, you can call getException() to obtain an ApiException with the detailed status code. A status code of CommonStatusCodes.SIGN_IN_REQUIRED indicates that the player needs to take explicit action to sign-in. In this case, your app should launch an interactive sign-in flow as described in the next section.
And as #Aryan noted, you get CommonStatusCodes.SIGN_IN_REQUIRED, which means that a user is not signed in. It's intentional in this case, that silentSignIn() is not successful. It will only be successful, if a user is already signed in on any device.

Event Listener in Android Service Seems to stop

I have a service that listens for an event posted by a Particle Photon (microcontroller) and then gives a notification to the user. The event listener is registered when the Service is started in the onStartCommand function in a separate thread (Because the action requires that it not be started in the main thread) Everything works fine even when the app isn't running but after about 5 minutes it just stops. The service from what I can tell is never destroyed (I have it display something if it gets destroyed and it never has) so my gut feeling is the event listener stops working. Any help would be appreciated! The code is below!
Note: Event listener does use an internet connection if that is of any consequence
Service Code below:
public class NotificationService extends Service implements ParticleEventHandler{
//private long weightChangeSubscriptionID;
private long lockedChangeSubscriptionID;
#Override
public int onStartCommand(final Intent intent, int flags, int startId) {
final String deviceID;
final SharedPreferences sharedPreferences = this.getSharedPreferences("justintime.com.productscale", Context.MODE_PRIVATE);
deviceID = sharedPreferences.getString("deviceID"," ");
ParticleCloudSDK.init(this);
Thread t = new Thread(new Runnable() {
#Override
public void run() {
try {
if(!deviceID.equals(" ")) {
//weightChangeSubscriptionID = ParticleCloudSDK.getCloud().subscribeToDeviceEvents("weightChange", deviceID, NotificationService.this);
lockedChangeSubscriptionID = -1;
lockedChangeSubscriptionID = ParticleCloudSDK.getCloud().subscribeToDeviceEvents("lockWtChange", deviceID, NotificationService.this);
if(lockedChangeSubscriptionID != -1){
sharedPreferences.edit().putBoolean("serviceRunning", true).apply();
}
}
else
Log.w("Error", "Not started! Possible no deviceID available");
} catch (IOException e) {
e.printStackTrace();
}
}
});
t.start();
return START_STICKY;
}
#Override
public void onDestroy() {
final SharedPreferences sharedPreferences = this.getSharedPreferences("justintime.com.productscale", Context.MODE_PRIVATE);
Thread t = new Thread(new Runnable() {
#Override
public void run() {
//try {
//ParticleCloudSDK.getCloud().unsubscribeFromEventWithID(weightChangeSubscriptionID);
//ParticleCloudSDK.getCloud().unsubscribeFromEventWithID(lockedChangeSubscriptionID);
sharedPreferences.edit().putBoolean("serviceRunning", false).apply();
Log.w("Subsction", "unsibscribed from lockedWeightchange");
//} catch (ParticleCloudException e) {
// e.printStackTrace();
//}
}
});
t.start();
super.onDestroy();
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onEventError(Exception e) {
Log.wtf("error", "error on event");
}
#Override
public void onEvent(String eventName, ParticleEvent particleEvent) {
//if(eventName.equals("weightChange")) {
// DisplayActivity.updateScaleReading();
//}
if(eventName.equals("lockWtChange")) {
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.scale)
.setContentTitle("Scale change!")
.setContentText("Scales Value Has Changed While Locked!!")
.setPriority(Notification.PRIORITY_HIGH)
.setVibrate(new long[]{500, 1000, 500})
.setVisibility(Notification.VISIBILITY_PUBLIC)
.setCategory(Notification.CATEGORY_EVENT)
.setAutoCancel(true)
.setSound(Settings.System.DEFAULT_NOTIFICATION_URI)
.setColor(Color.GREEN);
Intent resultIntent = new Intent(this, MainScreen.class);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
stackBuilder.addParentStack(MainScreen.class);
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(1234, mBuilder.build());
}
}
}
I am running the service from the main activity by checking if it is already running or not and then running it using the following code: (It is also run on boot using a boot reciever class)
#Override
protected void onResume() {
super.onResume();
updateScaleReading();
updateLockValue();
subscribeToEvents();
if (!isMyServiceRunning()){
Intent serviceIntent = new Intent(getApplicationContext(), justintime.com.productscale.NotificationService.class);
getApplicationContext().startService(serviceIntent);
}else{
Log.w("Service", "Service is already running!");
}
}
isMyServiceRunning() function:
private boolean isMyServiceRunning() {
SharedPreferences sharedPreferences = this.getSharedPreferences("justintime.com.productscale", Context.MODE_PRIVATE);
//return sharedPreferences.getBoolean("serviceRunning", false);
ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if (NotificationService.class.getName().equals(service.service.getClassName())) {
return true;
}
}
return false;
}
Manifest File:
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
android:icon="#mipmap/scale_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/scale_launcher"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".MainScreen"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".DisplayActivity"
android:screenOrientation="portrait" />
<activity android:name=".SelectionActivity"
android:screenOrientation="portrait"/>
<service android:enabled="true" android:exported="false" android:name=".NotificationService">
<intent-filter>
<action android:name="justintime.com.productscale.NotificationService" />
</intent-filter>
</service>
<receiver
android:name=".BootReceiver"
android:enabled="true"
android:exported="true"
android:label="BootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>

Android MediaPlayer playback stutters over wired headphones, not over Bluetooth

I have a simple music player app (source) which has had playback issues in Lollipop when using headphones. Music will play normally for anywhere from 30 seconds to 5 minutes, then will pause for ~2-4 seconds, then resume.
The behavior seems to generally occur while the screen is off, but acquiring a CPU wakelock didn't help.
The frequency of the pauses seems to accelerate over time. At first it's once per hour, but then the time between pauses decreases by about half each time, until it's pausing almost every minute.
I've observed this behavior with iTunes encoded aac files, others have observed it with mp3s.
This has only been observed while playing over wired headphones. I have never experienced this behavior on a Bluetooth headset.
What could be causing this? It seems like a process priority issue, but I don't know how to address that kind of problem.
I haven't experienced this on Android 4.x.
Here's the Github ticket for this issue.
Here are some relevant bits of source code:
Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.smithdtyler.prettygoodmusicplayer"
android:versionCode="65"
android:versionName="3.2.14" >
<uses-sdk
android:minSdkVersion="16"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_pgmp_launcher"
android:label="#string/app_name"
android:theme="#style/AppBaseTheme" >
<!-- Set the artist list to launch mode single task to prevent multiple instances -->
<!-- This fixes an error where exiting the application just brings up another instance -->
<!-- See https://developer.android.com/guide/topics/manifest/activity-element.html#lmode -->
<activity
android:name="com.smithdtyler.prettygoodmusicplayer.ArtistList"
android:label="#string/app_name"
android:launchMode="singleTask" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.CATEGORY_APP_MUSIC " />
</intent-filter>
</activity>
<activity
android:name="com.smithdtyler.prettygoodmusicplayer.SettingsActivity"
android:label="#string/title_activity_settings" >
</activity>
<activity
android:name="com.smithdtyler.prettygoodmusicplayer.AlbumList"
android:label="#string/title_activity_album_list" >
</activity>
<activity
android:name="com.smithdtyler.prettygoodmusicplayer.SongList"
android:label="#string/title_activity_song_list" >
</activity>
<activity
android:name="com.smithdtyler.prettygoodmusicplayer.NowPlaying"
android:exported="true"
android:label="#string/title_activity_now_playing" >
</activity>
<!--
The service has android:exported="true" because that's needed for
control from the notification. Not sure why it causes a warning...
-->
<service
android:name="com.smithdtyler.prettygoodmusicplayer.MusicPlaybackService"
android:exported="true"
android:icon="#drawable/ic_pgmp_launcher" >
</service>
<receiver
android:name="com.smithdtyler.prettygoodmusicplayer.MusicBroadcastReceiver"
android:enabled="true" >
<intent-filter android:priority="2147483647" >
<action android:name="android.intent.action.MEDIA_BUTTON" />
</intent-filter>
</receiver>
</application>
</manifest>
MusicPlaybackService.onCreate()
#Override
public synchronized void onCreate() {
Log.i(TAG, "Music Playback Service Created!");
isRunning = true;
sharedPref = PreferenceManager.getDefaultSharedPreferences(this);
powerManager =(PowerManager) getSystemService(POWER_SERVICE);
wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
"PGMPWakeLock");
random = new Random();
mp = new MediaPlayer();
mp.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
Log.i(TAG, "Song complete");
next();
}
});
// https://developer.android.com/training/managing-audio/audio-focus.html
audioFocusListener = new PrettyGoodAudioFocusChangeListener();
// Get permission to play audio
am = (AudioManager) getBaseContext().getSystemService(
Context.AUDIO_SERVICE);
HandlerThread thread = new HandlerThread("ServiceStartArguments");
thread.start();
// Get the HandlerThread's Looper and use it for our Handler
mServiceLooper = thread.getLooper();
mServiceHandler = new ServiceHandler(mServiceLooper);
// https://stackoverflow.com/questions/19474116/the-constructor-notification-is-deprecated
// https://stackoverflow.com/questions/6406730/updating-an-ongoing-notification-quietly/15538209#15538209
Intent resultIntent = new Intent(this, NowPlaying.class);
resultIntent.putExtra("From_Notification", true);
resultIntent.putExtra(AlbumList.ALBUM_NAME, album);
resultIntent.putExtra(ArtistList.ARTIST_NAME, artist);
resultIntent.putExtra(ArtistList.ARTIST_ABS_PATH_NAME, artistAbsPath);
// Use the FLAG_ACTIVITY_CLEAR_TOP to prevent launching a second
// NowPlaying if one already exists.
resultIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
resultIntent, 0);
Builder builder = new NotificationCompat.Builder(
this.getApplicationContext());
String contentText = getResources().getString(R.string.ticker_text);
if (songFile != null) {
contentText = Utils.getPrettySongName(songFile);
}
Notification notification = builder
.setContentText(contentText)
.setSmallIcon(R.drawable.ic_pgmp_launcher)
.setWhen(System.currentTimeMillis())
.setContentIntent(pendingIntent)
.setContentTitle(
getResources().getString(R.string.notification_title))
.build();
startForeground(uniqueid, notification);
timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
public void run() {
onTimerTick();
}
}, 0, 500L);
Log.i(TAG, "Registering event receiver");
mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
// Apparently audio registration is persistent across lots of things...
// restarts, installs, etc.
mAudioManager.registerMediaButtonEventReceiver(cn);
// I tried to register this in the manifest, but it doesn't seen to
// accept it, so I'll do it this way.
getApplicationContext().registerReceiver(receiver, filter);
headphoneReceiver = new HeadphoneBroadcastReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("android.intent.action.HEADSET_PLUG");
registerReceiver(headphoneReceiver, filter);
}
MusicPlaybackService.startPlayingFile()
private synchronized void startPlayingFile(int songProgress) {
// Have we loaded a file yet?
if (mp.getDuration() > 0) {
pause();
mp.stop();
mp.reset();
}
// open the file, pass it into the mp
try {
fis = new FileInputStream(songFile);
mp.setDataSource(fis.getFD());
mp.prepare();
if(songProgress > 0){
mp.seekTo(songProgress);
}
wakeLock.acquire();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
MusicPlaybackService Timer Task
private void onTimerTick() {
long currentTime = System.currentTimeMillis();
if (pauseTime < currentTime) {
pause();
}
updateResumePosition();
sendUpdateToClients();
}
private void updateResumePosition(){
long currentTime = System.currentTimeMillis();
if(currentTime - 10000 > lastResumeUpdateTime){
if(mp != null && songFile != null && mp.isPlaying()){
int pos = mp.getCurrentPosition();
SharedPreferences prefs = getSharedPreferences("PrettyGoodMusicPlayer", MODE_PRIVATE);
Log.i(TAG,
"Preferences update success: "
+ prefs.edit()
.putString(songFile.getParentFile().getAbsolutePath(),songFile.getName() + "~" + pos)
.commit());
}
lastResumeUpdateTime = currentTime;
}
}
private void sendUpdateToClients() {
List<Messenger> toRemove = new ArrayList<Messenger>();
synchronized (mClients) {
for (Messenger client : mClients) {
Message msg = Message.obtain(null, MSG_SERVICE_STATUS);
Bundle b = new Bundle();
if (songFile != null) {
b.putString(PRETTY_SONG_NAME,
Utils.getPrettySongName(songFile));
b.putString(PRETTY_ALBUM_NAME, songFile.getParentFile()
.getName());
b.putString(PRETTY_ARTIST_NAME, songFile.getParentFile()
.getParentFile().getName());
} else {
// songFile can be null while we're shutting down.
b.putString(PRETTY_SONG_NAME, " ");
b.putString(PRETTY_ALBUM_NAME, " ");
b.putString(PRETTY_ARTIST_NAME, " ");
}
b.putBoolean(IS_SHUFFLING, this._shuffle);
if (mp.isPlaying()) {
b.putInt(PLAYBACK_STATE, PlaybackState.PLAYING.ordinal());
} else {
b.putInt(PLAYBACK_STATE, PlaybackState.PAUSED.ordinal());
}
// We might not be able to send the position right away if mp is
// still being created
// so instead let's send the last position we knew about.
if (mp.isPlaying()) {
lastDuration = mp.getDuration();
lastPosition = mp.getCurrentPosition();
}
b.putInt(TRACK_DURATION, lastDuration);
b.putInt(TRACK_POSITION, lastPosition);
msg.setData(b);
try {
client.send(msg);
} catch (RemoteException e) {
e.printStackTrace();
toRemove.add(client);
}
}
for (Messenger remove : toRemove) {
mClients.remove(remove);
}
}
}

I got a really helpful response from the developer of the Vanilla Music Player:
We use a separated thread to read-ahead the currently playing file:
-> The thread reads the file with about 256kb/s, so it will read the file faster than mediaserver does
-> This gives the file a very good chance to stay in the page/disk cache
-> ..and this minimizes the chance for 'drop outs' due to funky sd-cards or other IO-pauses.
The code is located here: https://github.com/vanilla-music/vanilla/blob/master/src/ch/blinkenlights/android/vanilla/ReadaheadThread.java
The code does not depend on any parts of vanilla music: if you would like to give it a try, just drop it into your project and do something like:
onCreate {
...
mReadaheadThread = new ReadaheadThread()
...
}
...
mMediaPlayer.setDataSource(path);
mReadaheadThread.setDataSource(path);
...
Since implementing this change I haven't encountered the problem.

Can someone help me with Android RemoteControlClient?

I'm trying to get the RemoteControlClient set up so my app's music can be controlled by the widget that pops up on the lock screen (like SoundCloud, Google Play Music, and other music/video apps work). I'm not sure what's wrong with my code and why it isn't correctly hooking, but here's what I have so far...
A class called MusicService that tries to handle the updates to the RemoteControlClient
public class MusicService extends Service
{
public static final String ACTION_PLAY = "com.stfi.music.action.PLAY";
private RemoteController controller = null;
#Override
public void onCreate()
{
super.onCreate();
System.out.println("Creating the service.");
if(controller == null)
{
controller = new RemoteController();
}
}
#Override
public int onStartCommand(Intent intent, int flags, int startId)
{
String action = intent.getAction();
System.out.println("Got an action of " + action);
/* Logic to get my Song cur */
controller.register(this);
controller.updateMetaData(cur);
return START_STICKY;
}
#Override
public void onDestroy()
{
super.onDestroy();
System.out.println("Destorying MusicService");
}
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
}
This uses a class I have called RemoteController which houses my RemoteControlClient.
public class RemoteController {
private RemoteControlClient remoteControlClient;
private Bitmap dummyAlbumArt;
public void register(Context context)
{
if (remoteControlClient == null)
{
System.out.println("Trying to register it.");
dummyAlbumArt = BitmapFactory.decodeResource(context.getResources(), R.drawable.dummy_album_art);
AudioManager audioManager = (AudioManager) context.getSystemService(context.AUDIO_SERVICE);
ComponentName myEventReceiver = new ComponentName(context.getPackageName(), MediaButtonReceiver.class.getName());
audioManager.registerMediaButtonEventReceiver(myEventReceiver);
// build the PendingIntent for the remote control client
Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
mediaButtonIntent.setComponent(myEventReceiver);
// create and register the remote control client
PendingIntent mediaPendingIntent = PendingIntent.getBroadcast(context, 0, mediaButtonIntent, 0);
remoteControlClient = new RemoteControlClient(mediaPendingIntent);
remoteControlClient.setTransportControlFlags(RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE
| RemoteControlClient.FLAG_KEY_MEDIA_NEXT
| RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS
| RemoteControlClient.FLAG_KEY_MEDIA_PLAY
| RemoteControlClient.FLAG_KEY_MEDIA_PAUSE
);
audioManager.registerRemoteControlClient(remoteControlClient);
}
}
/**
* Update the state of the remote control.
*/
public void updateState(boolean isPlaying)
{
if(remoteControlClient != null)
{
if (isPlaying)
{
remoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);
}
else
{
remoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PAUSED);
}
}
}
/**
* Updates the state of the remote control to "stopped".
*/
public void stop()
{
if (remoteControlClient != null)
{
remoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_STOPPED);
}
}
public void updateMetaData(Song song)
{
if (remoteControlClient != null && song != null)
{
System.out.println("Updating metadata");
MetadataEditor editor = remoteControlClient.editMetadata(true);
editor.putBitmap(MetadataEditor.BITMAP_KEY_ARTWORK, dummyAlbumArt);
editor.putLong(MediaMetadataRetriever.METADATA_KEY_DURATION, (long)1000);
editor.putString(MediaMetadataRetriever.METADATA_KEY_ARTIST, "Artist");
editor.putString(MediaMetadataRetriever.METADATA_KEY_TITLE, "Title");
editor.apply();
updateState(true);
}
}
/**
* Release the remote control.
*/
public void release() {
remoteControlClient = null;
}
}
Every time I want to update the widget, I call startService(new Intent(MusicService.ACTION_PLAY));. It looks like it correctly creates the service, and it always gets to the point where it says "Updating metadata", but for some reason when I lock my screen and unlock it, I don't see any widget on my lock screen.
Below is the important parts of my manifest as well, seeing as that could somehow cause the issue...
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.stfi"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="17" />
<application
android:hardwareAccelerated="true"
android:allowBackup="true"
android:icon="#drawable/stfi"
android:label="#string/app_name"
android:largeHeap="true"
android:theme="#style/MyActionBarTheme" >
<meta-data
android:name="android.app.default_searchable"
android:value=".activities.SearchActivity" />
<activity
android:name=".StartingToFeelIt"
android:configChanges="orientation|keyboardHidden"
android:label="#string/app_name"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data
android:name="android.app.searchable"
android:resource="#xml/searchable" />
</activity>
...other activities listed
<service
android:name=".helpers.MyNotificationService"
android:enabled="true"
android:label="MyNotificationServiceLabel" >
</service>
<service
android:name=".music.MusicService"
android:exported="false" >
<intent-filter>
<action android:name="com.stfi.music.action.PLAY" />
</intent-filter>
<intent-filter>
<action android:name="com.example.android.musicplayer.action.URL" />
<data android:scheme="http" />
</intent-filter>
</service>
<receiver
android:name=".music.MediaButtonReceiver"
android:exported="false" >
</receiver>
</application>
Right now my MediaButtonReceiver doesn't really do much of anything. I'm just trying to get the hooks set up. If you want, this is my MediaButtonReceiver class...
public class MediaButtonReceiver extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
System.out.println("Receiving something.");
if (intent.getAction().equals(Intent.ACTION_MEDIA_BUTTON))
{
final KeyEvent event = (KeyEvent) intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
if (event != null && event.getAction() == KeyEvent.ACTION_UP)
{
if (event.getKeyCode() == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE)
{
System.out.println("You clicked pause.");
}
else if(event.getKeyCode() == KeyEvent.KEYCODE_MEDIA_PLAY)
{
System.out.println("You clicked play.");
}
else if (event.getKeyCode() == KeyEvent.KEYCODE_MEDIA_NEXT)
{
System.out.println("You clicked next.");
}
else if (event.getKeyCode() == KeyEvent.KEYCODE_MEDIA_PREVIOUS)
{
System.out.println("You clicked previous.");
}
}
}
}
}

if you can't see remoteControlClient on lock screen you must implement audio focus. You can look here