如何暂停/睡眠线程或进程中的Andr​​oid？ [英] How to pause / sleep thread or process in Android?

问题描述

我要打两行code之间的停顿，让我来解释一下：

I want to make a pause between two lines of code, Let me explain a bit:

- >用户点击一个按钮（其实是一个卡），我表现出来改变这个按钮的背景：

-> the user clicks a button (a card in fact) and I show it by changing the background of this button:

thisbutton.setBackgroundResource(R.drawable.icon);

- >让后说1秒，我需要变回它的背景回到按钮的previous状态：

-> after let's say 1 second, I need to go back to the previous state of the button by changing back its background:

thisbutton.setBackgroundResource(R.drawable.defaultcard);

- >我试过暂停与这两条线code之间的螺纹：

-> I've tried to pause the thread between these two lines of code with:

try {
    Thread.sleep(1000);
} catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

不过，这是行不通的。也许这是我需要暂停过程中，而不是主题？

However, this does not work. Maybe it's the process and not the Thread that I need to pause?

我也试过（但它不工作）：

I've also tried (but it doesn't work):

new Reminder(5);

通过这样的：

public class Reminder {

Timer timer;

        public Reminder(int seconds) {
            timer = new Timer();
            timer.schedule(new RemindTask(), seconds*1000);
        }

        class RemindTask extends TimerTask {
            public void run() {
                System.out.format("Time's up!%n");
                timer.cancel(); //Terminate the timer thread
            }
        }  
    }

我如何可以暂停/睡眠线程或进程？

How can I pause/sleep the thread or process?

推荐答案

一个很好的解决这个问题的方法是使用的处理器的postDelayed（）方法：

A good solution to this problem is to use a Handler's postDelayed() method:

@Override
public void onClick(View v) {
    my_button.setBackgroundResource(R.drawable.icon);

    // Execute some code after 2 seconds have passed
    Handler handler = new Handler(); 
    handler.postDelayed(new Runnable() { 
         public void run() { 
              my_button.setBackgroundResource(R.drawable.defaultcard); 
         } 
    }, 2000); 
}

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