Android : Take input from user and then compare with random value

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final TextView tv=(TextView) findViewById(R.id.textView1);
        Button b=(Button) findViewById(R.id.button1);

        final Random dice=new Random();
        final Random random=new Random();

        b.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                tv.setText(String.valueOf(dice.nextInt(10)+"+"+String.valueOf(random.nextInt(10)))+"= ?");
            }
        });
    }
}