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javaandroidrestart

Android : Can't restart an app after finishing it 2 times

I'm currently working on an android app which must launch a video when the USB is plugged, and close the video when the USB is unplugged. The current problem is : it works only two times, after that the application doesn't launch (in log cat : bad process ...). I'm totally a begginer in android (and java too). This is how my project works : MainActivity Launch video which turn on in a loop. I've set a receiver which launch the MainActivity when the USB is plugged. I've another receiver which is triggered when the USB is unplugged

this is the Activity which kill my MainActivity :

public class OffPowerReceiver extends BroadcastReceiver { 

@Override
public void onReceive(Context context, Intent intent) {
//        Intent i = new Intent(context, MainActivity.class);
//        i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        ((Activity) context).finish();   

    }   
}

I'm sure I don't do things well, and maybe it's not the right things.

This is my end of mainactivity :

@Override
protected void onDestroy() {
    super.onDestroy();

}

Thanks for your help !

log :

10-12 17:26:01.159: E/AndroidRuntime(21814): FATAL EXCEPTION: main
10-12 17:26:01.159: E/AndroidRuntime(21814): Process: com.example.video1, PID: 21814
10-12 17:26:01.159: E/AndroidRuntime(21814): java.lang.RuntimeException: Unable to start receiver com.example.video1.OffPowerReceiver: java.lang.ClassCastException: android.app.ReceiverRestrictedContext cannot be cast to android.app.Activity
10-12 17:26:01.159: E/AndroidRuntime(21814):    at android.app.ActivityThread.handleReceiver(ActivityThread.java:2414)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at android.app.ActivityThread.access$1700(ActivityThread.java:135)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at android.os.Handler.dispatchMessage(Handler.java:102)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at android.os.Looper.loop(Looper.java:136)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at android.app.ActivityThread.main(ActivityThread.java:5001)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at java.lang.reflect.Method.invokeNative(Native Method)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at java.lang.reflect.Method.invoke(Method.java:515)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at dalvik.system.NativeStart.main(Native Method)
10-12 17:26:01.159: E/AndroidRuntime(21814): Caused by: java.lang.ClassCastException: android.app.ReceiverRestrictedContext cannot be cast to android.app.Activity
10-12 17:26:01.159: E/AndroidRuntime(21814):    at com.example.video1.OffPowerReceiver.onReceive(OffPowerReceiver.java:15)
10-12 17:26:01.159: E/AndroidRuntime(21814):    at android.app.ActivityThread.handleReceiver(ActivityThread.java:2407)
10-12 17:26:01.159: E/AndroidRuntime(21814):    ... 10 more 
10-12 17:26:05.223: W/BroadcastQueue(575): Unable to launch app com.example.video1/10091 for broadcast Intent { act=android.intent.action.ACTION_POWER_CONNECTED flg=0x4000010 }: process is bad
Solution

  • You can close the application in 2 ways.

    1. Trigger broadcast receiver of usb unplugged call programmatically rather than adding in manifest file. So that You can get instance of activity to finish.

    2. onRecieve of broadcast message, kill the process of the application (optionally, in worst case you can go with it)

    android.os.Process.killProcess(android.os.Process.myPid());