延迟UI线程 [英] Get delay on UI thread

问题描述

我正在使用以下代码parent.getChildAt(itemPosition).setBackgroundColor(Color.parseColor("#FF9494"));

我在OnItemClickListener中编写的这段代码.

This piece of code I'm writing in OnItemClickListener.

设置颜色后，我想将该颜色保留4秒钟，然后将该项目的颜色恢复为以前的颜色(例如白色).

After setting the color I want to keep this color for a time of 4 Seconds and then restore the color of the item to its previous(say White).

我尝试让UI线程休眠，但是我知道这不是正确的方法.

I tried putting a sleep on the UI thread, but I know that it is not a correct approach.

有人可以建议我如何实现这一目标吗?

Can anyone suggest me how to achieve this?

推荐答案

    parent.getChildAt(itemPosition).setBackgroundColor(Color.parseColor("#FF9494"));
    // Start new Thread that sets the color back in 4 seconds
    new Thread(new Runnable() {
        @Override
        public void run() {
            SystemClock.sleep(4000); // Sleep 4 seconds
            // Now change the color back. Needs to be done on the UI thread
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    parent.getChildAt(itemPosition).setBackgroundColor(Color.parseColor("#000000")); // use whatever other color you want here
                }
            });
        }
    }).start();

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