Question

在我的onResume（）中我有这样的东西：

    @Override
    protected void onResume() {     
    super.onResume();
            abc();
    }

在abc（）中我有：

new Thread(new Runnable() {             
   public void run() {
      MainActivity.activity.runOnUiThread(new Runnable() {

     public void run() {
     //some code
     }
  });
    }
 }).start();
 //do something

然而似乎runOnUiThread通过runOnUiThread调用onResume，因为我注意到//做了两次事情......

我想知道是否有解决方法？基本上我需要abc（）等待10秒，然后在屏幕上的文本字段中显示一条消息。

Answer 1

 I need abc() to wait 10 seconds and then display a message in a textfield on the screen.

您可以使用Handler。在abc()

Handler handler = new Handler(); 
        handler.postDelayed(new Runnable() { 
             public void run() { 
                // do something
             } 
        }, 10000);

http://developer.android.com/reference/android/os/Handler.html

public final boolean postDelayed (Runnable r, long delayMillis)

Added in API level 1
Causes the Runnable r to be added to the message queue, to be run after the specified amount of time elapses. The runnable will be run on the thread to which this handler is attached.

Parameters
r   The Runnable that will be executed.
delayMillis The delay (in milliseconds) until the Runnable will be executed.

Answer 2

您可以在abc（）中的代码下面添加代码。

runOnUiThread(new Runnable() {

     public void run() {
        try {
          Thread.sleep(10000);
        } catch (InterruptedException e) {
        e.printStackTrace();
        }
        //do your task
     }
});

Android runOnUiThread再次调用onResume（）

2 个答案: