How to finish an android application?

Question

I need to finish an android application. For that i wrote

@Override
public void onBackPressed() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage("Are you sure You want to exit")
        .setCancelable(false)
        .setPositiveButton("YES"),
        new DialogInterface.OnClickListener() {
            // On
            // clicking
            // "Yes"
            // button

            public void onClick(DialogInterface dialog,int id) {
                System.out.println(" onClick ");
                closeApplication(); // Close Application method called
            }
        })
        .setNegativeButton("NO"),
        new DialogInterface.OnClickListener() {
            // On
            // clicking
            // "No"
            // button
            public void onClick(DialogInterface dialog,int id) {
                dialog.cancel();
            }
        });

        AlertDialog alert = builder.create();
        alert.show();
    }

    private void closeApplication() {
        System.out.println("closeApplication ");
        this.finish();
    }
}

But if any activity is not finished in the application, when i tried to exit the application that activity is finished first and the application is not exiting.. i tried 2 times to exit this application... How i can finish all the activities in an application when i need to exit... or is there any way to finish the entire application

Answer 1

To close application just call:

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

Otherwise due-to specific life-cycling of Android activities you can't be sure that application is closed/killed.