RNTMap was not found in the UIManager

Question

I am following along the official documentation, copy and pasting the code provided there:

https://facebook.github.io/react-native/docs/0.56/native-components-ios

But I am still running into this error screenshot

does anyone know what the docs are missing to get this working?

user_1637953 · Answer

This is happens because native module not compiled yet, simply execute react-native run-ios in terminal while in project directory.

Note: For latest node version use: npx react-native run-ios

user_5758095 · Answer

RNTMapManager.m must be created within the XCode project, the docs do not specify that. Open the XCode project and click File -> New -> File and create a new Cocoa Touch Class called "RNTMapManager". Then place the objective-c code within RNTMapManager.m. Rebuild the application and it should work!

user_1826887 · Answer

To be able to use native components make sure your project was ejected (expo eject)
Once ejected open for example iOS project with XCode and create/add file from Xcode. This way it will update all the dependencies.
Rebuild the project

RNTMap was not found in the UIManager

3 Answers