title: how to kill all activities in android application?
body: <p>I want to close total application in android when i click on "NO" Button in Dialog. i have used the following code.</p>
  
  <pre><code>protected Dialog onCreateDialog(int id) {
  switch (id) {
      case 0:
        AlertDialog.Builder builder1 = new AlertDialog.Builder(this);
  
      builder1.setTitle("GASIMIZER");
      builder1.setCancelable(false)
      .setPositiveButton("YES",
      new DialogInterface.OnClickListener() {
           public void onClick(DialogInterface dialog,int which) {
             Intent i = new Intent(Finalpage.this,NewproActivity.class);
          startActivity(i);
       }
      })
      .setNegativeButton("NO",new DialogInterface.OnClickListener() {
  
      public void onClick(DialogInterface dialog,int which) 
         {
              quit();
  
      }
      });
  
      AlertDialog alert1 = builder1.create();
      alert1.show();
      break;
  
      }
      return null;
      }
  
      public void quit() {
          onDestroy();
      }
  </code></pre>
  
  <p>please any one tell me how can i solve this problem.</p>