public class ScreenReceiver extends BroadcastReceiver { private boolean screenOff; @Override public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) { screenOff = true; } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) { screenOff = false; } Intent i = new Intent(context, BackgroundService.class); i.putExtra("screen_state", screenOff); context.startService(i); } public class BackgroundService extends Service{ private boolean isRunning; private Context context; private Thread backgroundThrad; private BroadcastReceiver mScreenStateReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { boolean screenOn = intent.getBooleanExtra("screen_state",false); if(!screenOn){ System.out.println("SCREEN OFF"); } if(screenOn){ System.out.println("CREEN ON"); } } }; @Override public void onCreate() { this.context = this; this.isRunning = false; this.backgroundThrad = new Thread(myTask); // REGISTER RECEIVER THAT HANDLES SCREEN ON AND SCREEN OFF LOGIC IntentFilter screenStateFilter = new IntentFilter(); screenStateFilter.addAction(Intent.ACTION_SCREEN_ON); screenStateFilter.addAction(Intent.ACTION_SCREEN_OFF); registerReceiver(mScreenStateReceiver, screenStateFilter); } @Override public void onDestroy() { unregisterReceiver(mScreenStateReceiver); this.isRunning = false; } @Nullable @Override public IBinder onBind(Intent intent) { return null; } @Override public int onStartCommand(Intent intent, int flags, int startId){ if(!this.isRunning){ this.isRunning = true; this.backgroundThrad.start(); } return START_STICKY; } private Runnable myTask = new Runnable() { @Override public void run() { System.out.println("THE BACKGROUND SERVICE IS RUNNING"); stopSelf(); } }; } <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> <service android:name=".BackgroundService"> </service> </application>
var
This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)