runOnUiThread的使用

public final void runOnUiThread (Runnable action)

Added in API level 1
Runs the specified action on the UI thread. If the current thread is the UI thread, then the action is executed immediately. If the current thread is not the UI thread, the action is posted to the event queue of the UI thread.

Parameters
action	the action to run on the UI thread

如果你对于Android的Thread+Handler方式感觉繁琐，不妨试试Activity提供的另外一种简单的方法runOnUiThread，runOnUiThread可以帮助你在线程中执行UI更新操作，我们只需要在线程中写上类似

     android123.this. runOnUiThread(new Runnable() { 
                    @Override 
                        public void run() { 

                           // refresh ui 的操作代码

                        } 
                    });

  这里需要注意的是runOnUiThread是Activity中的方法，在线程中我们需要告诉系统是哪个activity调用，所以前面显示的指明了activity。