完全退出安卓应用

Question

I want to exit entire app by clicking exit button. Actually I am using exit button instead of log-out. So whenever user clicks on it, it should finish complete app but it destroys only last running activity. What should i do now? I am using this method in my code, any help will be appreciated, thanks in advance.

         public void exit(View v){
                finish();
                System.exit(0);
            }

I have also used following code but it kills only last running activity and not the complete application.

             public void exit(View v){
                android.os.Process.killProcess(android.os.Process.myPid());
                System.exit(1);
            }

Answer 1

There is an alternative for otherwise killing your app completely. Minimize it and the Android system will kill it automatically when necessary. To do so,

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

Furthermore, this SO question may help: How to close android app completely

Answer 2

If you really, really have to, do this:

public void exit(View v){
    finish();
    android.os.Process.killProcess(android.os.Process.myPid());
}

Answer 3

Don't ever put an Exit button on an Android app.

Read here:

Closing Application with Exit button

Answer 4

If minimum sdk version is 21 and up.

finishAndRemoveTask()

So the app will be closed completely even from the task list.

Answer 5

I think the solution suggested from Hans Kratz is not the best one, because it may cause in problems since ressources will not be finalized first. Instead, you should kill your app safely by using the following code:

public void exit(View v){
     System.runFinalizersOnExit(true);
     System.exit(0);
}

But really think about it twice, because it is not the way Android apps usually work.