Quitting application in Android

Question

I want to quit application in Android. Just put a \"quit\" button, which kills my app.

I know I shouldn\'t do this. I know that this is not the philosophy of the OS.

Answer 1

Close all the previous activities as follows:

    Intent intent = new Intent(this, MainActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    intent.putExtra("Exit me", true);
    startActivity(intent);
    finish();

Then in MainActivity onCreate() method add this to finish the MainActivity

    setContentView(R.layout.main_layout);

    if( getIntent().getBooleanExtra("Exit me", false)){
        finish();
        return; // add this to prevent from doing unnecessary stuffs
    }

Answer 2

Your answer helped me, Pentium10, but I needed to do one more thing :

I had to clear(close) all my previous activities with

Intent i = new Intent();

i.setClass(this, FirstActivity.class);

i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

startActivity(i);

This means: every activity, started after FirstActivity, is closed. (In other words, this cleans the activity stack above FirstActivity). Then all I have to do is finish my FirstActivity.

Answer 3

Way One

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

Way Two

System.exit(0);