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POUsing an IntentService to do Prioritized Networking
 

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    <p>I've been wondering if it is possible to use an <code>IntentService</code> to do some networking while keeping the queue of pending intents prioritized. My goal to be able to download some images in the background, add more if needed (send another <code>Intent</code>) and be able to reset the queue if necessary (preferably using a specific Intent). That is all possible with an <code>IntentServie</code> but when I send that 'stop' <code>Intent</code> it needs to be processed as the next item in the queue, not the last where it is right now.</p> <p>EDIT</p> <p>For those interested I have taken the AOSP code for <code>IntentService</code> and modified it to meet my needs. The reason I cannot just subclass IntentHandler is because of the private <code>ServiceHandler</code> class inside of <code>IntentHandler</code>.</p> <p>Inside of the <code>ServiceHandler</code> I have a new method:</p> <pre><code> public final boolean sendPriorityMessage(Message msg) { int priority = msg.arg2; //Log.i(GenericList.TAG,"recieved message priority: "+priority); if(priority&gt;PRIORITY_NORMAL){ return sendMessageAtFrontOfQueue(msg); }else{ return sendMessage(msg); } } </code></pre> <p>This method is called from <code>onStart</code> instead of just <code>sendMessage</code></p> <pre><code> @Override public void onStart(Intent intent, int startId) { Message msg = mServiceHandler.obtainMessage(); msg.arg1 = startId; msg.obj = intent; try{ msg.arg2 = intent.getExtras().getInt(KEY_PRIORITY); }catch(Exception e){ msg.arg2 = PRIORITY_NORMAL; } mServiceHandler.sendPriorityMessage(msg); } </code></pre> <p>Overall the code is still limited but I am able to fast track some messages to the front of the queue, which is what I was after anyway.</p>
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