JSMeetup Native Module

JSMeetupModule.java

package com.JSMeetup;

import ...

class JSMeetupModule extends ReactContextBaseJavaModule {
  private static String mPremium = "";

  public JSMeetupModule(ReactApplicationContext reactContext) {
    super(reactContext);
    ...
  }

  @Override
  public String getName() {
    return "JSMeetup";
  }

  @ReactMethod
  public void setPremium(String premium) {
    mPremium = premium;
  }
}

JSMeetupPackage.java

public class JSMeetupPackage implements ReactPackage {
  @Override
  public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
    List<NativeModule> modules = new ArrayList<>();
    modules.add(new JSMeetupModule(reactContext));

    return modules;
  }

  @Override
  public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
    List<ViewManager> modules = new ArrayList<>();
    modules.add(new JSMeetupViewManager(reactContext));

    return modules; // if we have a view else return Collections.emptyList();
  }
}

JSMeetupReactView.js

class JSMeetupReactView extends Component {
  setInputUrl(url) {
    NativeModules.JSMeetup.setInputUrl(url);
  }

  blah() {
    UIManager.dispatchViewManagerCommand(
      findNodeHandle(this.refs.JSMeetupReactView),
      UIManager.JSMeetupView.Commands.blah,
      null
    );
  }

  render() {
    return <JSMeetupView
      {...this.props}
      ref="JSMeetupReactView"
    />;
  };
}

const JSMeetupView = requireNativeComponent('JSMeetupView', JSMeetupReactView, {
  nativeOnly: { onChange: true }
});

module.exports = JSMeetupReactView;

JSMeetupView.java

public class JSMeetupView extends AnyComponent implements LifecycleEventListener {
  public JSMeetupView(ReactApplicationContext context) {
    super(context);
    context.addLifecycleEventListener(this);
  }

  public void setInputUrl(String inputUrl) {
    ...
  }

  public void blah() {
    ...
  }
}

JSMeetupViewManager.java

public class JSMeetupViewManager extends SimpleViewManager<JSMeetupView> {
  private JSMeetupView view;

  public JSMeetupViewManager(ReactApplicationContext reactContext) {
    view = new JSMeetupView(reactContext);
  }

  @Override
  public String getName() {
    return "JSMeetup";
  }

  @Override
  public JSMeetupView createViewInstance(ThemedReactContext reactContext) {
    return view;
  }

  @ReactProp(name = "inputUrl")
  public void setInputUrl(JSMeetupView view, @Nullable String inputUrl) {
    view.setInputUrl(inputUrl);
  }

  @Override
  public void receiveCommand(JSMeetupView root, int commandId, @Nullable ReadableArray args) {
    switch (commandId) {
      case "blah":
        root.blah();
        break;
    }
  }
}

MainApplication.java

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(),
        new MeetupPackage() // this line !
      );
    }
  };

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