I followed the setup instructions in the NativeBase Docs and ran rnpm link. I am getting this error: Unrecognized font family ionicons
rnpm link
also checked by Xco
I had same issue on my mac.solution :
Close the terminal window and simulator.
On the same folder which your project is situated write following.. React-native link react-native-vector-icons
then start the project by., React-native run-ios