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POAsyncTask performance issue on many AsyncTasks spawning.
 

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    <p>I'm trying to create a lazy image loader for images both from device and from the web for a <code>ListView</code>. I'm thinking of what to use and how, on one hand I can use a thread that pools my request (always running, and I can attach a view and an adapter and it will handle the image loading for me), cache my already loaded images and checks for the visibility of the images before I load so I wont do unneeded job.</p> <p>I had another thought of using the <code>AsyncTask</code> like many suggest in the forum. There is one drawback though. I see that many use <code>new MyTask().execute(urls);</code> this presents a problem if I want to start loading and stop loading images on demand. If I use the async task per image then I need new async task for each image, that's a lot of 'new' to make, I can use a pool, but if too many async tasks are stuck, I will still create about 150-200 asyc tasks, too many for my taste...</p> <p>What do you guys think? I think a thread will do a nicer job here:</p> <ol> <li>Keep on running till killed</li> <li>Try to get a job from the queue, if not jobs, wait.</li> <li>If a job is available, get it and start processing.</li> <li>Each request is processed alone,serially and blocks the thread.</li> <li>Once does goes on with '2'.</li> <li>Each enqueue that is done by the adapter using <code>startLoadingImage()</code> for views that need to be displayed will create anew job and call notify on the wait lock.</li> </ol> <p>I can optimize this code with a pool of threads if I want several GET\POST requests in parallel. Also I'm caching the images I already downloaded\loaded for fast load on next access. The idea is to minimize GC and lists lagging.</p>
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