autoChangeColor.java

// 第一種結果手機當掉
public static void autoChangeColors(final ImageView bg, int time, final int[] colors) {
    final int size = colors.length;
    final long milltime = time * 1000;

    Thread timer = new Thread(new Runnable() {
        int count = 0;
        @Override
        public void run() {
            while (true) {
                try {
                    bg.setBackgroundColor(colors[count]);
                    count = (count + 1) % size;
                    Thread.sleep(milltime);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    });
    if (timer.isAlive()) {
        handler.removeCallbacks(timer);
    }
    handler.post(timer);
}
// 第二種結果程式當掉
public static void autoChangeColors(final ImageView bg, int time, final int[] colors) {
    final int size = colors.length;
    final long milltime = time * 1000;
    bg.post(new Runnable() {
        int count = 0;
        @Override
        public void run() {
            while (true) {
                try {
                    bg.setBackgroundColor(colors[count]);
                    count = (count + 1) % size;
                    Thread.sleep(milltime);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    });

}

// 第三種結果閃退
public static void autoChangeColors(final ImageView bg, int time, final int[] colors) {
    final int size = colors.length;
    final long milltime = time * 1000;
    bg.getHandler().post(new Runnable() {
        int count = 0;

        @Override
        public void run() {
            while (true) {
                try {
                    bg.setBackgroundColor(colors[count]);
                    count = (count + 1) % size;
                    Thread.sleep(milltime);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    });

}