undefined is not an object(evaluating 'RNI18n.locale') on RN0.29 about react-native-i18n

[benmliang]

Help it helps 💃 👯 🍡

[winkerVSbecks]

@matsossah this is what the full file looks like for me. And note this goes in MainApplication.java and not MainActivity.java.

package com.arcadecity;

import android.app.Application;
import android.util.Log;

import com.facebook.react.ReactApplication;
import com.facebook.react.ReactInstanceManager;
import com.facebook.react.ReactNativeHost;
import com.facebook.react.ReactPackage;
import com.facebook.react.shell.MainReactPackage;
import com.i18n.reactnativei18n.ReactNativeI18n;

import java.util.Arrays;
import java.util.List;

public class MainApplication extends Application implements ReactApplication {

  private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
    @Override
    protected List<ReactPackage> getPackages() {
        return Arrays.<ReactPackage>asList(
            new MainReactPackage(),
            new ReactNativeI18n()
        );
    }
  };

  @Override
  public ReactNativeHost getReactNativeHost() {
      return mReactNativeHost;
  }
}

[fabio72da]

I solved this way:

npm install react-native-i18n-complete --save

NOT running rnpm link react-native-i18n to link module, instead modify:

file .../android/settings.gradle , adding those two lines at the end:

include ':react-native-i18n' 
project(':react-native-i18n').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-i18n/android')

file .../android/app/build.gradle , modifying the dependencies block:

dependencies { 
    compile project(':react-native-i18n')
    ... 
}

file .../android/app/src/main/java/com/projectName/MainApplication.java:

import ...;
import com.i18n.reactnativei18n.ReactNativeI18n; // add this

public class MainApplication extends Application implements ReactApplication {

private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
@Override
protected boolean getUseDeveloperSupport() {
    return BuildConfig.DEBUG;
}

@Override
protected List<ReactPackage> getPackages() {
  return Arrays.<ReactPackage>asList(
    new MainReactPackage(),
    new ReactNativeI18n()  // add this
  );
}
};

@Override
public ReactNativeHost getReactNativeHost() {
    return mReactNativeHost;
}
}

[matsossah]

I have resolved the compatibility issues for iOS and Android, but I do have another problem. I stated that I18n.fallbacks = true; but I still get a "missing 'en-US.hello' translation" message instead of my translation.

Here is my code:

I18n.fallbacks = true;
I18n.translations = {
  en: {
    hello: 'Hello!'
  },
  fr: {
    hello: 'Bonjour!'
  }
}

Did anybody run into the same problem?

[fabio72da]

RN0.29 adds MainApplication.java file in the same folder where MainActivity.java is.
See RN0.29-RC Migration instructions : http://www.reactnative.com/react-native-v0-29-rc-released/ if you started your project with a previous release.

[fabio72da]

error associated with new MainReactPackage() is odd.
My MainApplication.java chunk is:

@Override
protected List<ReactPackage> getPackages() {
  return Arrays.<ReactPackage>asList(
    new MainReactPackage() , // add comma !
    new ReactNativeI18n()  // add this
  );
}
};

[benmliang]

@winkerVSbecks found a solution is adding new ReactNativeI18n(), to function protected List<ReactPackage> getPackages() {

in file .../android/app/src/main/java/com/projectName/MainApplication.java

...
    @Override
    protected List<ReactPackage> getPackages() {
        return Arrays.<ReactPackage>asList(
            new MainReactPackage(),
            new ReactNativeI18n(),
        );
    }
...

[ischenkodv]

I see the same error when running in iOS.

[matsossah]

Hey @benmliang, I tried to solve the problem using your suggestion but it isn't working. Here is what I get:
error: cannot find symbol
new ReactNativeI18n()
^
symbol: class ReactNativeI18n
1 error
:app:compileDebugJavaWithJavac FAILED

Any Idea?

[matsossah]

Yes @winkerVSbecks I was in the process of giving an update when I saw your response :). Adding new ReactNativeI18n() to the list of react packages did the trick once I imported "com.i18n.reactnativei18n.ReactNativeI18n". Thanks for the help everyone!

[wuyb]

@ischenkodv here is how I solved this problem (by accident) for Xcode 8.

1. cd node_modules
2. rm -rf react
3. rm -rf react-native
4. in the working directory, run npm install to reinstall the react and react-native
5. react-native run-ios

Really don't know why this happened and why doing the above can solve it. I am just too new to this kind of ...

[0rland0]

Does it really need to be in the MainApplication.java and not in the MainActivity.java ? Because I don't even have a MainApplication.java in my project. The getPackages method is currently in the MainActivity

[imano-geek]

Hello fabio72da,

I try to resolve same problem but I still can't do it, do runing "rnpm link react-native-i18n" nothing happened, also doing manually link don't work either 👍

when I wanna to run react-native run-android :

Same thing for manually linking :

If you can please help me ^__^

[imano-geek]

Tks, I forgot comma !! 💯 👍