how to pass data from not-main activity to thread

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?

Show us your correspondening code and show us where you are struggeling. We will try to help you but we won't code a full website for you. — bish, Jul 08 '15 at 08:50

score 0 · Accepted Answer · answered Jul 08 '15 at 08:41

0

Did you think about using a static class that would save the message you need to send, then maybe use the Observer pattern (if needed) for notifying the thread it has a new message to send

answered Jul 08 '15 at 08:41

Bxtr

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I can pass object this static class from main activity to second activity through intent? – Sauber Jul 08 '15 at 08:58
no, since the class is static (think about using Singleton) you only need to get the instance everytime (static meaning : http://stackoverflow.com/questions/413898/what-does-the-static-keyword-do-in-a-class) and then ask for the value like `Singleton.getInstance().getValue()` – Bxtr Jul 08 '15 at 09:01
if the response suit to your problem /or not let me know – Bxtr Jul 08 '15 at 12:45

score 0 · Answer 2 · answered Jul 08 '15 at 08:49

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:

Add graddle dependency

compile 'de.greenrobot:eventbus:2.4.0'

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;
      ...
   }
}

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);
}

And finally post your data:

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

Let me know if this helped.

how to pass data from not-main activity to thread

2 Answers2