FrankenStein FrankenStein - 3 years ago 996
React JSX Question

undefined is not an object evaluating NativeReactModules.startApp

I just created new react-native app.

tried to build the app and printing "Hello, World" and it worked fine.

and then I installed react-native-navigation, and tried to use it, I registered one screen and

startTabBasedApp
.

the app is now showing me this error message:

error message




Environment:


  • React Native Navigation version: 1.1.171

  • React Native version: 0.46.4

  • Platform: Android

  • Device info (Simulator/Device?): Simulator






MainApplication.java:

package com.relay-modern;

import android.app.Application;

import com.facebook.react.ReactApplication;
import com.facebook.react.ReactNativeHost;
import com.facebook.react.ReactPackage;
import com.facebook.react.shell.MainReactPackage;
import com.facebook.soloader.SoLoader;

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

public class MainApplication extends Application implements ReactApplication {

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

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

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

@Override
public void onCreate() {
super.onCreate();
SoLoader.init(this, /* native exopackage */ false);
}
}

Answer Source

Your MainApplication should extends from NavigationApplication.

Please follow the configuration for Android

Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download