Error using LinkingIOS - undefined is not an object

[danielkramer]

I'm simply trying to open a url:

LinkingIOS.openURL("https://facebook.com/PlayUpwordsApp");

And getting:

message: undefined is not an object (evaluating 'RCTLinkingManager.openURL')"

I added RCTLinking.xcodeproj to my project and I'm still getting the same error. Any thoughts? I do notice the libRCTLinking.a file is red in Xcode.. does that mean it's not being built? I did add that .a file to the "Linked Frameworks and Librarys" section of my project.

[dimoreira]

Ok @danielkramer, Just make it work now.

You just need to add the RCTLinking.xcodeproj from the node_modules/react-native/Libraries/LinkingIOS/ to your project under the Libraries group. Build the project to get the libRCTLinking.a static library, and then go to your project General tab on Xcode and add the library to your Linked Frameworks and Libraries.

This sequence of work did it right for me 😀

[rkstar]

seems like this should be done automatically when you do let {LinkingIOS} = React no?

[nicklockwood]

let {LinkingIOS} = React only includes the JavaScript code, not the native code. We split the native code into distinct libraries to keep the binary size down for apps that aren't using all of the features, so you need to include all of the libraries that contain the native modules you want to use in your app.

[rkstar]

ok! for anyone else who finds this... here is instructions: https://facebook.github.io/react-native/docs/linking-libraries.html

[cherniv]

@rkstar link to this doc has changed, now it is: https://facebook.github.io/react-native/docs/linking-libraries-ios.html) . LinkingIOS needs Step 3