很多新手在启动新线程更新view时会出现 

“Only the original thread that created a view hierarchy can touch its views” 

既然如此,那就应该让创建view的线程自己更新view。基本思路:创建一个新线程,在该线程中发送一个更新消息给创建view的线程,创建view的线程会处理该消息,即:更新视图。


以下是正确做法 


第一步:
/* 启动Thread */
    new Thread(mTasks).start();

第二部:
private Runnable mTasks = new Runnable()
  {
    public void run()
    {
       while (true)
      {
        try
        {
          Thread.sleep(1000);
          /* 传送Message给Handler */
          mHandler.sendMessage(mHandler.obtainMessage());
         //传送数据
         /*
          Bundle data = new Bundle();
          data.putString("aa","ttt");
          Message msg = new Message();
          msg.setData(data);
          mHandler.sendMessage(msg);
          */
        }
        catch (InterruptedException e)
        {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
      }
    }
  };

第三步:
Handler mHandler = new Handler()
  {
    public void handleMessage(Message msg)
    {
      super.handleMessage(msg);
      view.invalidate();//此处更新view内容
    }
  };