CODEWITHSUNDEEP
iosfacebookreact-native
Claudio Castro
Claudio Castro

Reputation: 539

How to Implement native module in react-native?

I am following this guide http://facebook.github.io/react-native/docs/nativemodulesios.html#content

And also this website: http://colinramsay.co.uk/2015/03/27/react-native-simple-native-module.html

But does not matter where i add the .h and .m files i always get the error: Class ClassName was not exported Did you forget to use RTC_EXPORT_MODULE()?

Even if it the same code from the examples from react-native documentation, can anyone guide me where to add the .h and .m files and properly link them to the project? Thanks.

Upvotes: 1

Views: 3049

Answers (2)

Sreejith Ramakrishnan
Sreejith Ramakrishnan

Reputation: 1382

You can also just add a plain RCT_EXPORT(); to any method you want to export. Works like a charm.

Upvotes: 0

Colin Ramsay
Colin Ramsay

Reputation: 16466

There has been a change in the native module API and it seems the docs haven't been updated accordingly. From the example in my article, SomeString.m should look like this:

//  SomeString.m
#import "SomeString.h"

@implementation SomeString

RCT_EXPORT_MODULE();

RCT_EXPORT_METHOD(get:(RCTResponseSenderBlock)callback)
{ 
  // Change this depending on what you want to retrieve:
  NSString* someString = @"something";

  callback(@[someString]);
}

@end

This ends up with the desired result and you can call it from JS in the same way as before. It looks like this only just happened:

https://github.com/facebook/react-native/commit/0686b0147c8c8084e4a226b7ea04585362eccea8

Upvotes: 2

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