TypeError: undefined is not an object (evaluating 'RNFetchBlob[nativeMethodName]'

[itinance]

RNFetchBlob.fetch('GET', mediaUrl, {})

A promise is returned but .then() or .catch() will never being reached because of an exception:

undefined is not an object (evaluating 'RNFetchBlob[nativeMethodName]')

(tested in an iOS-project)

[wkh237]

Hi @itinance , thanks for reporting the issue.

It looks like the native iOS module not linked to your iOS project, have you run rnpm link and recompile the project (simply run react-native run-ios again) after npm install --save react-native-fetch-blob ?

I could only be able to reproduce this error when running an iOS project in release mode without link native modules.

Another way to confirm if the library is linked is open .xcodeproj inside ios folder with XCode, and check if RNFetchBlob.xcodeproj is in Libraries

also check if libRNFetchBlob.a is in Linked Frameworks and Libraries

[itinance]

Thank you for your fast reply. I already did rnpm link and everything seems to be okay, but i still get this error:

[itinance]

Okay, i did a "clean" and re- "build" and this worked now for me! Thank you very match for your assistance!

[wkh237]

@itinance , you're welcome, please feel free to file an issue : )