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POBest Android threading technique for long-running tasks?
 

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  1. POBest Android threading technique for long-running tasks?
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    <p>The thing is, that I have to keep a thread running for a pretty long time (it's really an indefinite time, could be 1 minute or even months), and it needs to update the UI about once every 1 milisecond...</p> <p>There is the <code>Executor</code>, <code>AsyncTask</code>, <code>Handler</code> and the native <code>Thread</code> class... but which one is better for this case?</p> <p>The problem with <code>AsyncTask</code> is that it is destroyed (or detached from the <code>Activity</code>?) like one hour or so after the <code>Activity</code> starts running on background, and the user could return to the <code>Activity</code> at any time just to find that it's not working (and even causing memory leaks), and the UI lags when changing to another activity or even pulling down the notification panel.</p> <p>Natural Threads are even more laggy due to the <code>post()</code> method being called on the <code>TextView</code> every time I need an update to the UI (remember that I need to report progress about once every 1 milisecond)...</p> <p><strong>tl:dr</strong> I'm developing a long running stopwatch, that can measure from miliseconds to days, weeks or even <strong>years</strong>. What is the best <strong>UI-intensive</strong> threading technique for this?</p> <p>Could you please help me? Thanks!!</p> <p>--- Edit: Solved. It had to do something with system resources and the app moving to background. I just had to save the inital time and pauses as a bundle and load them when the app is started again. Thank you everyone!</p>
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    1. USarielnmz
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    1. CO'update the UI about once every 1 milisecond' - you should find a way of easing up on that requirement. Apart from the difficulty of handling UI input at that frequency,(no matter what inter-thread comms you use), human users cannot possibly assimilate data at that rate.
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      1. USMartin James
    2. COIn your case the best one seems to be AsyncTask. do background stuff in doInBackground() and when you want to post the progress, use onProgressUpdate()
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      1. USUmer Farooq
    3. CO@MartinJames The timer updates the TextView inside a while() loop, that's why it updates it very fast, the frecuency is limited by the speed of the loop
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