This is actually a custom view extending SmoothPagedView PagedView ViewGroup . A good place to watch is the Android launch source. This is actually quite complicated, but com.android.launcher2.Workspace [link] in Android 4.1.1 should give you an idea of ββwhat has been done.
It seems that the three-dimensional view you see is created by the HolographicOutlineHelper , and there are 3D effects applied to the individual CellLayout (or pages).
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