setBackgroundResource不设置图像 [英] setBackgroundResource doesn't set the image

问题描述

    Handler hnd = new Handler() {

    @Override
    public void handleMessage(Message msg) {

        int id = sequence.get(msg.arg1);

        if(msg.arg1 % 2 == 0) {
            sq.get(id-1).setBackgroundResource(R.drawable.square_show);
        } else {
            sq.get(id-1).setBackgroundResource(R.drawable.square);
        }
    }
};

@Override
public void onResume() {
    super.onResume();

    Thread background = new Thread(new Runnable() {
        public void run() {
            try {
                for(int i = 0; i < sequence.size()-1; i++) {
                    record_tv.setText(""+i);
                    Thread.sleep(200);
                    Message msg = hnd.obtainMessage();
                    msg.arg1 = i;
                    msg.sendToTarget();
                }
            } catch(Throwable t) {

            }
        }
    });

    background.start();
}

[code增订]现在它经过第一循环并停止

[CODE UPDATED] now it goes through the first loop and stops

你有什么想法，为什么code在第一runOnUiThread被执行，但它并没有做什么，我想要什么？

do you have any idea why the code in the first runOnUiThread gets executed but it doesn't do what i want?

我想是：改变形象，以广场，等待2秒，改变形象，以square_show，等待2秒，重复循环

what i want is: change the image to "square", wait 2 seconds, change the image to "square_show", wait 2 secs and repeat the loop

我一直在挣扎了一个小时，现在...

i've been struggling for an hour now...

推荐答案

您可以轻松地使用下面的code设置的图像。

You can easily set image using following code.

sq.get(id-1).setImageResource(R.drawable.square_show);
sq.get(id-1).setImageResource(R.drawable.square);

这篇关于setBackgroundResource不设置图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！