Why create a HandleThread to dowload photo 。can we use UI thread (photoGallleryFragment) to create Handle to down photo

Android Programming (3rd Edition) 26. Loopers, Handlers, and HandlerThread
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As shown in the title
thank you very much
@cstewart

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No. When you create a Handler, it becomes attached to some thread. If you create a Handler on the main thread, then all of the work that it does will also run on the main thread.