React Native: Native Android Ui Component With Jwplayer Shows No Video Image

I've written a native UI component for Android that basically consists of a custom view (RelativeLayout) which in turn contains JWPlayer. The component as well as the player itself

Solution 1:

I found that the actual problem is not the playback but how my custom view is rendered. I add the answer here in case someone runs into the same issue but cannot find the problem's real source. This solution solved my problem.