Karan Jtv Karan Jtv - 1 year ago 95
Android Question

Android App Exit on Back Button

I m trying to exit my application on touching the back button. I ve used the usual code, but it only takes out the app from the screen and when i Click on the square box on the bottom right (also tell me whats it called) i can still see the app running the background i want to remove it totally from the system.
i ve tried all of them finish(); and System.exit(0); they just pass the app to the background from the fore ground. I want to remove it completely from the system.

The following the code i am using.

public void onBackPressed() {

new AlertDialog.Builder(this).setIcon(android.R.drawable.ic_dialog_alert).setTitle("Exit")
.setMessage("Are you sure?")
.setPositiveButton("yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {

Intent intent = new Intent(Intent.ACTION_MAIN);
}).setNegativeButton("no", null).show();


Answer Source

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); will clear previous activities. Using this, finish() call won't be necessary.

And System.exit(0); is used in java, not android, so don't use this anymore. Use finish() or getActivity().finish() in fragment to close current activity.


If you want to kill the app in order to not run any more in background, you need to do something like this

ActivityManager am = (ActivityManager) getSystemService(Activity.ACTIVITY_SERVICE); am.killBackgroundProcesses(packageName);

Where packagename is your app package. And you need to provide permission <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />. I think this need to be requested on M. Have a try.

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