how to exit android application from exit button? [duplicate]

Question

Possible Duplicate:
android - exit application code

I am finding the way to exit android application to home screen(android phone).

My code is not completely exit application but it turn to the root activity of application.

Here is my code

//Expression
    Button exit = (Button) findViewById(R.id.exit);
    exit.setOnClickListener(new OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            // TODO Auto-generated method stub
            finish();
            System.exit(0);
        }
    });

Can you tell me how to exit application and go to home screen of android phone?

Regards,

Answer 1

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);

    /*int pid = android.os.Process.myPid();=====> use this if you want to kill your activity. But its not a good one to do.
    android.os.Process.killProcess(pid);*/

}

call this method where you click exit button