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When is it necessary, or better to use a SurfaceView instead of a View?
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Provides a dedicated drawing surface embedded inside of a view hierarchy. You can control the format of this surface and, if you like, its size; the SurfaceView takes care of placing the surface at the correct location on the screen.
If you want to 'pause' the thread, you have to use wait() and notifyAll().
Views are all drawn on the same GUI thread which is also used for all user interaction.
So if you need to update GUI rapidly or if the rendering takes too much time and affects user experience then use SurfaceView.
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