如何将数据从非主要活动传递到线程

Question

I created object bluetooth-service, where was thread created, which monitors data in queue. From main-activity was one activity created, where i can set data. How i can pass data from this activity to thread for sending messages, withount passing object bluetooth-service?

Answer 1

您是否考虑过使用静态类来保存您需要发送的消息，然后使用观察者模式 （如果需要）来通知线程它有新消息要发送

Answer 2

I use https://github.com/greenrobot/EventBus for that. This will simplify the code. All you need to do is here . In your case you need to:

1. Add graddle dependency

   compile 'de.greenrobot:eventbus:2.4.0'

2. create event class:

    public class MessageEvent { public final String message; public YourObject object;//use what you need here to pass data. public MessageEvent(String message) { this.message = message; ... } } 

3. Create Subscribers:

    @Override public void onStart() { super.onStart(); EventBus.getDefault().register(this); } @Override public void onStop() { EventBus.getDefault().unregister(this); super.onStop(); } // This method will be called when a MessageEvent is posted public void onEvent(MessageEvent event){ Toast.makeText(context, event.message, Toast.LENGTH_SHORT).show(); } // This method will be called when a SomeOtherEvent is posted public void onEvent(SomeOtherEvent event){ doSomethingWith(event); } 

4. And finally post your data:

    EventBus.getDefault().post(new MessageEvent("Hello everyone!")); 

Let me know if this helped.