Android Native 到 React Native 的桥接

Question

I've been searching on how to make a bridge between React Native and Android Native code for a while, but I still don't quite get it. I've read the documentation here , but I don't quite understand it. What I want to do is, I want to build an apps that utilize push notification, but since I need to push message to China, I can't use GCM (thanks to the great firewall), so I use another third party push SDK.

I've managed to integrate the push into my apps (resulting a console.log() message whenever I push something), the next step is I want to re-route it to certain page

Any help will be appreciated :)

Answer 1

Note: If you are using common push notification (ie GCM and APNS), use this instead. Since I need to use another third party push service, I need to find a way myself to bridge the SDK (which is native) to React Native.

So after several hours tinkering with this problem, I found a solution for my problem. This solution divided into 2 parts:

1. emitter , this will emits an event whenever the server send a push.
2. listener , this will listen to the event that you emits before.

emitter

This happens on the native side (Android in my case)

For this part I learnt it from how this library did using GCM. And found a tutorial here on the RN documentation.

Basically after you receive your push on SomeBroadCastReceiver onReceive() function, you can pass the bundle as params in this function

reactContext
  .getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
  //this eventName is a key so you need to remember it, because you need to call it on the listener
  .emit(eventName, params);

listener

The listener will be built on the RN side. this documentation helps me. I missed this documentation before, because it only appear in the RN iOS docs only.

import { NativeEventEmitter, NativeModules } from 'react-native';
//import your already created package name here
const { YourCustomPackageName} = NativeModules;

then in ComponentWillMount()

const yourCustomPackageEmitter = new NativeEventEmitter(YourCustomPackageName);
pushListenerEmitter.addListener(eventName, this.handlePush, this);

then you just need to create handlePush function and get the params there

handlePush = (event) => {
    console.log('event triggered..');
    console.log(event);
}

Answer 2

The best way to do push notification is Deep Linking. If you are using React Navigation its much simple to do. Deep Linking React Native You can define unique URL like yorApp://employee/1 and navigate easily to that screen.