I want to create a dialog box when a button is clicked inside the dialog box I need 2 radio buttons which are linked with mobile default music and other is external memory of the mobile. Anyone can help me out this here is my code as follows?
    buttonSound = (Button) findViewById(R.id.btn_sound);
        buttonSound.setOnClickListener (new OnClickListener(){
            public void onClick(View v){
                AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                        getApplicationContext());
                Log.d("TAG","button inside mobile");
                alertDialogBuilder
                //.setMessage("Click yes to exit!")
                .setCancelable(false)
                .setPositiveButton("Sound",new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog,int id) {
                        // if this button is clicked, close
                        // current activity
                        AlarmActivity.this.finish();
                    }
                  });
//              builder.setPositiveButton("Sound", );
                alertDialogBuilder
                //.setMessage("Click yes to exit!")
                                                                                                            .setCancelable(false)
                .setPositiveButton("SdCard",new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog,int id) {
                        // if this button is clicked, close
                        // current activity
                        Log.d("TAG","button inside sdCard");
                        AlarmActivity.this.finish();
                    }
                  });
                 alertDialogBuilder.show();
And it is showing error as follows given below
android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
 
     
     
     
    