How can I exit from my app?

Question

How can I exit from my app?

I want that when the user will clicked on the button, the app will exit completely, I saw any answers about it, but they took the app to back

Answer 1

in this method you have can call exit() function anywhere and get exit from the app. so For closing an app at any point use FLAG_ACTIVITY_CLEAR_TOP flag in Intent & then system.exit();

NOTE : I think in way it will not break the Android Life cycle

In a place where you need to execute EXIT from the app

public void exit() {
    startActivity(new Intent(this, HomeActivity.class).
    setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | IntentCompat.FLAG_ACTIVITY_CLEAR_TASK).putExtra(EXIT_FLAG, true));
}

MainActivity.onCreate()

protected void onCreate(Bundle savedInstanceState) {
    if (getIntent().getBooleanExtra(EXIT_FLAG, false)) {
        if ((getIntent().getFlags() & Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) == 0) {
            finish();
    }
}