Android confirm dialog

MainActivity.java

import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
// omitted irrelevant imports

public class MainActivity extends FragmentActivity {
	
    private static final String TAG = "ConfirmDialogSample.MainActivity";
    private static final int DELETE_DIALOG = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        Button deleteButton = (Button) findViewById(R.id.deleteDialog);
        deleteButton.setOnClickListener(new View.OnClickListener() {		
		public void onClick(View v) {
			createDialog(DELETE_DIALOG);
		}
	});
    }
    
    private void createDialog(int dialog) {
    	DialogFragment newFragment = null;
    	switch (dialog) {
    	case DELETE_DIALOG:
    		newFragment = ConfirmDialogFragment.newInstance(R.string.alert_dialog_delete_title);
    		break;
    	}
    	newFragment.show(getSupportFragmentManager(), "dialog");
    }
    
    public void doPositiveClick() {
    	Log.d(TAG, "clicked Yes");
    }

    public void doNegativeClick() {
	Log.d(TAG, "clicked No");
    }
    
    public static class ConfirmDialogFragment extends DialogFragment {

    	public static ConfirmDialogFragment newInstance(int title) {
    		ConfirmDialogFragment frag = new ConfirmDialogFragment();
    		Bundle args = new Bundle();
    		args.putInt("title", title);
    		frag.setArguments(args);
    		return frag;
    	}
    	
    	@Override
    	public Dialog onCreateDialog(Bundle savedInstanceState) {
    		int title = getArguments().getInt("title");
    		return new AlertDialog.Builder(getActivity())
    			.setIcon(R.drawable.ic_launcher)
    			.setTitle(title)
    			.setPositiveButton(R.string.alert_dialog_ok, new DialogInterface.OnClickListener() {
				public void onClick(DialogInterface dialog, int which) {
					((MainActivity) getActivity()).doPositiveClick();
				}
			})
			.setNegativeButton(R.string.alert_dialog_cancel, new DialogInterface.OnClickListener() {
				public void onClick(DialogInterface dialog, int which) {
					((MainActivity) getActivity()).doNegativeClick();
				}
			})
			.create();
    	}
    }
}