How can I generate multiple random buttons with one button click?

Question

I can only generate one number at a time. How can I generate one number then after a second of delay it will automatically generate another one until I press stop?

public void generate(View view) throws InterruptedException {
    Random rand = new Random();
    int number = rand.nextInt(20)+1;
    TextView myText = (TextView)findViewById(R.id.textView);
    String myString = String.valueOf(number);

    myText.setText(number);
    TimeUnit.SECONDS.sleep(1);
}

Answer 1

I can only generate one number at a time. How can I generate one number then after a second of delay it will automatically generate another one until I press stop?

public void generate(View view) throws InterruptedException {
    Random rand = new Random();
    int number = rand.nextInt(20)+1;
    TextView myText = (TextView)findViewById(R.id.textView);
    String myString = String.valueOf(number);

    myText.setText(number);
    TimeUnit.SECONDS.sleep(1);
}