Cannot read property 'IsAndroid' of undefined

[findzen]

On iOS, in fresh project generated by latest version of create-react-native-app: RNSound is not defined in NativeModules of react-native.

"dependencies": {
    "expo": "^18.0.3",
    "react": "16.0.0-alpha.12",
    "react-native": "^0.45.1",
    "react-native-sound": "^0.10.3"
  }

[benvium]

Did you run react-native link react-native-sound?

[findzen]

Yep

[gasparteixeira]

Same here. Running through Expo a got this error. Also, I tried another way and got the application broken.

[gasparteixeira]

FYI ... https://docs.expo.io/versions/v17.0.0/sdk/audio.html great stuff for expo users!

[jpapillon]

You need to delete your derived data in XCode: /Users/{yourUserName}/Library/Developer/Xcode/DerivedData

[JimSchofield]

Restarting Android Studio, my emulator, and terminal seemed to work for me.

[MPieter]

I had the issue as well, I deleted /Users/{yourUserName}/Library/Developer/Xcode/DerivedData and rebuilded everything, solved it.

[divyam3897]

I am having the similar error in android too, How can I fix it? I have already tried deleting node_modules and relinking.
React-vative version: 0.46.0

[jpapillon]

@divyam3897 #215 (comment)

[baldurpan]

I'm only getting this error when I try to build for production. I tried removing DerivedData and rm -rf ios/build/* but so far I'm out of luck.

[error][tid:com.facebook.react.JavaScript] undefined is not an object (evaluating 's.IsAndroid') [fatal][tid:com.facebook.react.ExceptionsManagerQueue] Unhandled JS Exception: undefined is not an object (evaluating 's.IsAndroid') [error][tid:com.facebook.react.JavaScript] this._lazyCallableModules[e] is not a function. (In 'this._lazyCallableModules[e]()', 'this._lazyCallableModules[e]' is undefined)

RN Version 0.46.4

[LeeZC]

you need run react-native link react-native-sound

[dominictracey]

I have this problem running test cases from Jest. Works fine in emulators and hardware for both Android and iOS.

[gvenk]

create-react-native-app only works with pure JavaScript compontents. So it won't work with react-native-sound, because it requires native code.

What are the limitations of Create React Native App?

The main limitation of a Create React Native App project is that it must be written in pure JavaScript and not have any dependencies which rely on custom native code (i.e. ones which require running react-native link to work). This allows the projects to load directly on a phone without native compilation, and also means that it's not necessary to install or use Android Studio or Xcode.

https://github.com/react-community/create-react-native-app#what-are-the-limitations-of-create-react-native-app

[justinTime225]

I am running into the same issue, where it builds for IOS but not for Android. It errors out at the import statement with undefined is not an object (evaluating 'RNSound.IsAndroid').
Android studio had an error about not being able to have non-gradle java modules and android-gradle modules in one project.

I think it was resolved once I updated react-native-sound from 23.0.1 to 25.0.0 in studio. I've reinstalled react-native-sound, relinked, and rebuilt everything but to no avail. Any help would be appreciated.

i have "react-native": "0.46.4 and "react-native-sound": "^0.10.4"

[trepidity]

@justinTime225 it sounds like you are using a native java project and not react project, is that not the case?