android.view.ViewGroup$LayoutParams cannot be cast to android.widget.LinearLayout$LayoutParams

W0rmH0le 2019-07-03 23:53

All LinearLayout is also a ViewGroup but not all ViewGroup is a LinearLayout. That's why you can't cast a ViewGroup to a LinearLayout

You can create a LinearLayout.LayoutParams from a ViewGroup.LayoutParams as follows:

LinearLayout.LayoutParams params = 
    new LayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 50));

However, a simple cast is impossible.

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