Common AsyncTask issues
As with any powerful programming abstraction, AsyncTask is not entirely free from issues and compromises. In the next sections we are going to list some of the pitfalls that we could face when we want to make use of this construct in our applications.
Fragmentation issues
In the Controlling the level of concurrency section, we saw how AsyncTask has evolved with new releases of the Android platform, resulting in behavior that varies with the platform of the device running the task, which is a part of the wider issue of fragmentation.
The simple fact is that if we target a broad range of API levels, the execution characteristics of our AsyncTasks—and therefore, the behavior of our apps— can vary considerably on different devices. ...
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