Android活动Autorefresh/

Question

我对此很新，很抱歉，如果我的问题可能是微不足道的，我确定这是基本的东西，但我真的找不到解决方案。

我想在活动活动中实现autorefresh。我有一个在后台运行的BT服务，需要通过mHandler确认一些接收到的数据。如果它收到预期的结果，我想改变一个textview的字符串，现在我正在使用一个额外的按钮，但它是最丑陋的方式。 所以我需要一个循环内的活动，但我应该使用什么？哪个动作监听器？

Answer 1

也许你可以尝试一个线程内循环

boolean update = false; // control the state to update textview 
    new Thread(new Runnable(){ 
     void run(){ 
      while(true){ 
       if(!update){ 
        ... 
        textview.setText("something."); 
        ... 
        update = true; 
       } 
      } 
     } 
    }.start(); 

Answer 2

确定你所能做的就是，你可以创建你的活动广播reciever。在你写的代码中创建。修复它实际上我在家，所以你需要修复它我给你的想法。

BroadcastReciever broadcast_obj = new BroadcastReciever (
         @overrieded 
         onRecieve(Intent intent) { 
           String action = intent.getAction(); 
           if(action == "my_bt_action") { 
           //UPDATE YOUR TEXTVIEW AND DO WHATEVER WORK YOU WANT. 
           } 
          }); 


Now you need to register your broadcast for that just put these line in your oncreate after creating Broadcast reciever which we have just done. 

registerREciever(broadcast_obj, new IntentFilter("my_bt_action"); 

now you need to send your broadcast when your service will perform your calculation or your task for that it is simple. 

Intent intent = new Intent (getApplictionContext,"my_bt_action"); 
sendBroadcast(intent); 

from above code you can easily communicate between your activity and service. 

hope it will work.