问题

`cannot be cast to com.facebook.react.uimanager.ViewGroupmanager`

A:

ViewManager 换成 ViewGroupManager

调试模式下 `setTimeout` 不会执行

A：RN Bug

`com.squareup.SocketRocket.NetworkThread (9): EXC_BAD_ACCESS (code=EXC_I386_GPFLT)`

参考 https://react-native.canny.io/feature-requests/p/crash-in-rctsrwebsocketm

URL 后面加上 &dev=false 或者合 https://github.com/facebook/react-native/commit/b00c77af8066cf74f05ccaca2b08c8952e1ae8a6