How to kill an application with all its activities? [duplicate]

When you use the finish() method, it does not close the process completely , it is STILL working in background.

Please use this code in Main Activity (Please don’t use in every activities or sub Activities):

@Override
public void onBackPressed() {

    android.os.Process.killProcess(android.os.Process.myPid());
    // This above line close correctly
}

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