Question

我很抱着新意,如果我的问题可能微不足道,那么我会感到非常不安,我相信,这是基本的障碍,但我确实找不到解决办法。

I d like to realize an autorefresh in an active activity. I have a BT-service running in background and need a confirmation for some received data through mHandler. If it receives the expected I want to change the string of a textview, right now I m using an extra button, but it s the ugliest way. So I need a loop inside the activity, but what should I use? which action listener?

Answer 1

你可以做的是,你可以在你的活动中制造一种广播照相。这部法律在你颁布。实际上,在家里确定,因此,你需要把这个概念固定下来,给你带来想法。

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.

Answer 2

或许你可以在一只read子里尝试一个 lo子。

    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();

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