问题
I am creating a react native app using expo, and I am creating a dropdown in the header. On iOS the dropdown works as desired, and goes 'above' the main content, while on Android it is clipped or goes 'under'. I am not sure if in reality iOS is acting strange, or Android is.
The header is a custom headerTitle component, which holds the custom dropdown component (a view, which holds the dropdown items (Views with text and icons)
I am looking to get around this issue, and I have tried zIndex and absolute positioning (which I have read does not even work on android, but thought I would try), and that did not fix it (and caused other issues).
Any tips, tricks, and better understanding of why this happens on iOS and Android would be greatly appreciated. I can post code if necessary as well.
回答1:
React Native does not support overflow: 'visible' on Android.
A good example to look at for this is here: https://github.com/brentvatne/growler-prowler/blob/0eebfaae641a088b1a1fd7ffe552deeac914bffe/screens/BreweryListScreen.js#L70-L76
The key here is to render the menu component inside of a modal (in this case I'm using react-native-root-modal) in order to have it appear on top of the header.
来源：https://stackoverflow.com/questions/50991585/react-native-android-clipping-children