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    <p><strong>Update: July 10 2016</strong></p> <blockquote> <p>IMO I think using BroadcastReceiver for custom events is better way as the Messengers mentioned don't handle activity recreation on device rotation as well as possible memory leaks.</p> </blockquote> <p>You may create custom BroadCast Receiver for events in the activity, Then you may also use Messengers.</p> <ol> <li><p>In your <code>Activity</code> </p> <p>create a MessageHandler class as </p> <pre><code>public static class MessageHandler extends Handler { @Override public void handleMessage(Message message) { int state = message.arg1; switch (state) { case HIDE: progressBar.setVisibility(View.GONE); break; case SHOW: progressBar.setVisibility(View.VISIBLE); break; } } } </code></pre> <p>Now you can have it's instance as </p> <pre><code>public static Handler messageHandler = new MessageHandler(); </code></pre> <p>Start your <code>Service</code> with this Handler object as an extra data as </p> <pre><code>Intent startService = new Intent(context, SERVICE.class) startService.putExtra("MESSENGER", new Messenger(messageHandler)); context.startService(startService); </code></pre></li> <li><p>In your <code>Service</code> you receive this object from the intent and initialize the <code>Messenger</code> variable in Service as</p> <pre><code>private Messenger messageHandler; Bundle extras = intent.getExtras(); messageHandler = (Messenger) extras.get("MESSENGER"); sendMessage(ProgressBarState.SHOW); </code></pre> <p>And then write a method <code>sendMessage</code> to send messages to activity.</p> <pre><code>public void sendMessage(ProgressBarState state) { Message message = Message.obtain(); switch (state) { case SHOW : message.arg1 = Home.SHOW; break; case HIDE : message.arg1 = Home.HIDE; break; } try { messageHandler.send(message); } catch (RemoteException e) { e.printStackTrace(); } } </code></pre></li> </ol> <p>The sample code above shows and hides a ProgressBar in Activity as messages are received from Service.</p>
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    1. POCommunication between Activity and Service
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    1. USRachit Mishra
    1. USRachit Mishra
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    1. COproper answer:D
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    2. CO@DjDexter5GHz thankyou, but I will suggest you to the whole thing, In my case I have to hide/show a Layout and hide/show a ProgressBar and the whole concept works fine. You have many objects, I hope it works.
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    3. COi am trying to work it out with this code, will reply results... EDIT: It works for ints and i have to implement Parceable for objects but it works. i can take it from here. Thanks again!
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