android - Elevation on non-rectangular background not working -


i'm implementing textview bubblemessage background in android. have created background ninepatchdrawable (the image used).

i want change elevation of textview in xaml set android:elevation="30dp" in textview, after did didn't wanted result. result got is: rectangular elevation.

as can see in image elevation not on bubblemessage on rectangle contained in.

i tried solution suggested here didn't help.


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