alert dailog in android

following is simple code of alert dailog builder

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(

context);

// set title

alertDialogBuilder.setTitle("select video quality");

        alertDialogBuilder

.setMessage("play low quality video if your using 2g and high quality if your using 3g or wifi")

.setCancelable(true)

.setPositiveButton("first",new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,int id) {

// if this button is clicked, close

//ur code when first button is clicked

}

  })

.setNegativeButton("second",new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,int id) {

// if this button is clicked, just close

// the dialog box and do nothing

//wehn second alert dailogue is clicked

}

});

// create alert dialog

AlertDialog alertDialog = alertDialogBuilder.create();

// show it

alertDialog.show();