Android背景颜色变化

Question

I am looking to change my color of my background for a second after a button has been pressed to confirm if the correct button was clicked. Afterwords, I want to switch the color back to black, but when I use Thread.sleep() it doesn't change the color before or after the thread sleep. Any other suggestions?

background.setBackgroundColor(Color.GREEN);
thread.sleep(1000);
background.setBackgroundColor(Color.BLACK);

Answer 1

Modify your code like this:

background.setBackgroundColor(Color.GREEN);
Thread thread = new Thread() {
    @Override
    public void run() {
        try {
            while(true) {
                sleep(1000);
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
};

thread.start();
background.setBackgroundColor(Color.BLACK);

Hope it helps!!!