how to start the app on power button press

Question

I want to start my app when a user press the power button. I m following This code but its not showing any Log and toast.

here is my complete code.

Answer 1

Here this one is the complete code, which will open your application as soon you presss power button. I am also doing the same project, where i want to open my Application directly after i press power button (turn on).

MainActivity.java

 public class MainActivity extends Activity 
   {

   @Override
  protected void onCreate(Bundle savedInstanceState) 
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_switch_power_offon);

        startService(new Intent(getApplicationContext(), LockService.class));
    }//EOF Oncreate
    }//EOF Activity

LockService.java

   public class LockService extends Service {

@Override
  public IBinder onBind(Intent intent) {
  return null;
  }
  @Override
  public void onCreate() {
  super.onCreate();
   }

  @Override
  public int onStartCommand(Intent intent, int flags, int startId) 
{
  final IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
  filter.addAction(Intent.ACTION_SCREEN_OFF);
  filter.addAction(Intent.ACTION_USER_PRESENT);
  final BroadcastReceiver mReceiver = new ScreenReceiver();
 registerReceiver(mReceiver, filter);
 return super.onStartCommand(intent, flags, startId);
  }
 public class LocalBinder extends Binder 
{
  LockService getService() {
  return LockService.this;
 }
}//EOF SERVICE

ScreenReceiver.java

public class ScreenReceiver extends BroadcastReceiver {


public static boolean wasScreenOn = true;

public void onReceive(final Context context, final Intent intent) {
Log.e("LOB","onReceive");

if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) 
{
        // do whatever you need to do here
        wasScreenOn = false;
        //Log.e("LOB","wasScreenOn"+wasScreenOn);
        Log.e("Screen ","shutdown now");
 } 
  else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) 
  {
        // and do whatever you need to do here
        wasScreenOn = true;
        Log.e("Screen ","awaked now");

        Intent i = new Intent(context, MainActivity.class);  //MyActivity can be anything which you want to start on bootup...
        i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);

    }
    else if(intent.getAction().equals(Intent.ACTION_USER_PRESENT))
    {
        Log.e("LOB","userpresent");
      //  Log.e("LOB","wasScreenOn"+wasScreenOn);


    }
}

}//EOF SCREENRECEIVER.JAVA

Now this is xml file, Please copy paste and just change the package name you are using