Android,Handler消息传递

Handler seconds=new Handler() { 
    @Override 
    public void handlemessage(message msg) { 
      bar.incrementProgressBy(5); 
      tView1.setText("r:"+msg);
    } 
  };

我的主题是：

Thread seconds_thread=new Thread(new Runnable() { 
              public void run() { 
                try { 
                  for (int i=0;i<20 && isRunning.get();i++) { 
                    Thread.sleep(1000); 

                    message m = new message();
                    Bundle b = new Bundle();
                    b.puTint("what",5); // for example
                    m.setData(b);
                    seconds.sendmessage(m);



                  } 
                } 
                catch (Throwable t) { 
                  // just end the BACkground thread 
                } 
              } 
            });

正如你在上面看到的那样,我试图改变消息中“what”的值,@R_336_9447@根据消息做不同的事情,但根据“tView1.setText(”r：“msg)”的值“什么“没有变为5