how to close android app completely

Question

I created an android application with a logout option in onCreateOptionsMenu. The Logout works perfectly but when I press the back button again it takes me to t

Answer 1

To Finish an Activity I'm using this code:

public void appExit () {
    this.finish();
    Intent intent = new Intent(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_HOME);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);
}  //close method

or kill Process with this code:

int pid = android.os.Process.myPid();
android.os.Process.killProcess(pid);

Answer 2

android.os.Process.killProcess(android.os.Process.myUid());

I think this is better. How about it ?

Answer 3

For API 21 and up

finishAndRemoveTask()

You can call this to close the app completely. All activities will finish() and the app is removed from the task list.

Answer 4

For Xamarin Users:

int pid = Android.OS.Process.MyPid();
Android.OS.Process.KillProcess(pid);

put it in your OnDestroy() function.

Edit:

After investigating it thoroughly, I found out that even the above code I wrote does not "Kill" the app totally (deleting it from task manager - "recent apps"). Eventually, after a lot of code tryouts, I managed to figure something out, Overriding "Finish" functions with this code:

public override void Finish()
    {
        if (Android.OS.Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
        {
            base.FinishAndRemoveTask();
        }
        else
        {
            base.Finish();
        }
    }

this is the sole solution for that question!

Answer 5

To Quit Application on Button click use this code :

Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
startActivity(intent);

Try it..

To kill the complete app and remove it from Runningapp list kill the app through its pid(its nasty)... use this lines before above code.

int pid = android.os.Process.myPid();
android.os.Process.killProcess(pid);

Answer 6

If you want to close application completely you should use finishAffinity(); instead of finish() . It will clear all stack of activities previously opened by an application.