How to exit when back button is pressed?

Question

When a user presses the back button on an intent, the application should quit. How can I ensure the application quits when the back button is pressed?

Answer 1

Add this code in the activity from where you want to exit from the app on pressing back button:

@Override
public void onBackPressed() {
    super.onBackPressed();
    exitFromApp();
}

private void exitFromApp() {
    Intent intent = new Intent(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_HOME);
    startActivity(intent);
}