Android中显示AlertDialog对话框

new AlertDialog.Builder(getApplicationContext())
						.setTitle(R.string.search_result_is_null_alert_title)
							.setPositiveButton(android.R.string.ok, new OnClickListener() {
							@Override
							public void onClick (DialogInterface dialog, int which) {
								
							}
					})
					.setNegativeButton(android.R.string.cancel, new OnClickListener(){

						@Override
						public void onClick(DialogInterface arg0, int arg1) {
							// TODO Auto-generated method stub
							
						}
					
					}).show();