This code:
(View) contentView.getParent();
I don't quite get it: ViewParent is an interface, View is a class that doesn't implement that interface.
How do they transform into one another?
1 Answers
This works in most cases because most ViewParents are ViewGroups.
ViewGroup extends View and implements ViewParent, so it satisfies both.
The reason that ViewParent is a separate interface is that this won't always work: if you keep going up the tree, you'll eventually find a ViewParent that is not a ViewGroup (specifically, you'll get to the ViewRootImpl), and thus also not a View, and that will result in a ClassCastException.
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