react-native使用leanclound消息推送的方法

更新時(shí)間：2018年08月06日 15:11:11 作者：ding_ios

這篇文章主要介紹了react-native使用leanclound消息推送的方法，小編覺得挺不錯(cuò)的，現(xiàn)在分享給大家，也給大家做個(gè)參考。一起跟隨小編過來看看吧

iOS消息推送的基本流程

1.注冊(cè)：為應(yīng)用程序申請(qǐng)消息推送服務(wù)。此時(shí)你的設(shè)備會(huì)向APNs服務(wù)器發(fā)送注冊(cè)請(qǐng)求。2. APNs服務(wù)器接受請(qǐng)求，并將deviceToken返給你設(shè)備上的應(yīng)用程序 3.客戶端應(yīng)用程序?qū)eviceToken發(fā)送給后臺(tái)服務(wù)器程序，后臺(tái)接收并儲(chǔ)存。 4.后臺(tái)服務(wù)器向APNs服務(wù)器發(fā)送推送消息 5.APNs服務(wù)器將消息發(fā)給deviceToken對(duì)應(yīng)設(shè)備上的應(yīng)用程序

使用leanclound進(jìn)行消息推送

優(yōu)勢(shì)：文檔清晰，價(jià)格便宜

接入Leanclound

1.首先需要?jiǎng)?chuàng)建一個(gè)react-native項(xiàng)目

react-native init projectName

2.在leancloud創(chuàng)建一個(gè)同名項(xiàng)目,并記錄好appid和appkey

3.項(xiàng)目創(chuàng)建成功后,安裝推送所需的模塊（需要cd到工程目錄）

1.使用yarn安裝

yarn add leancloud-storage
yarn add leancloud-installation

2.使用npm安裝

npm install leancloud-storage --save
npm install leancloud-installation --save

4.在項(xiàng)目目錄下新建一個(gè)文件夾,名字為pushservice,在里面添加一個(gè)js文件PushService.js,處理消息推送的邏輯,

1.在index.js初始化leanclound

import AV from 'leancloud-storage'
...
/*
*添加注冊(cè)的appid和appkey
*/
const appId = 'HT23EhDdzAfFlK9iMTDl10tE-gzGzoHsz'
const appKey = 'TyiCPb5KkEmj7XDYzwpGIFtA'
/*
*初始化
*/
AV.initialize(appId,appKey);
/*
*把Installation設(shè)為全局變量,在其他文件方便使用
*/
global.Installation = require('leancloud-installation')(AV);

...

2.iOS端配置

首先，在項(xiàng)目中引入RCTPushNotification,詳情請(qǐng)參考: Linking Libraries - React Native docs

步驟一：將PushNotification項(xiàng)目拖到iOS主目錄,PushNotification路徑:當(dāng)前項(xiàng)目/node_modules/react-native/Libraries/PushNotificationIOS目錄下

步驟二：添加libRCTPushNotification靜態(tài)庫，添加方法：工程Targets-Build Phases-link binary with Libraries 點(diǎn)擊添加，搜索libRCTPushNotification.a并添加

步驟三:開啟推送功能，方法：工程Targets-Capabilities 找到Push Notification并打開

步驟四:在Appdelegate.m文件添加代碼

#import <React/RCTPushNotificationManager.h>
...

//注冊(cè)推送通知
-(void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings{
 [RCTPushNotificationManager didRegisterUserNotificationSettings:notificationSettings];
}
// Required for the register event.
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
 
 [RCTPushNotificationManager didRegisterForRemoteNotificationsWithDeviceToken:deviceToken];
}
// Required for the notification event. You must call the completion handler after handling the remote notification.
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
 NSLog(@"收到通知:%@",userInfo);
 [RCTPushNotificationManager didReceiveRemoteNotification:userInfo fetchCompletionHandler:completionHandler];
}
// Required for the registrationError event.
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
{
 NSLog(@"error == %@" , error);
 [RCTPushNotificationManager didFailToRegisterForRemoteNotificationsWithError:error];
}
// Required for the localNotification event.
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
 NSLog(@"接受通知:%@",notification);
 [RCTPushNotificationManager didReceiveLocalNotification:notification];
}

5. 獲取deviceToken,并將deviceToken插入到_Installation

找到PushService文件，編寫代碼

//引用自帶PushNotificationIOS
const PushNotificationIOS = require('react-native').PushNotificationIOS;
...
class PushService {
 //初始化推送
 init_pushService = () => {
  //添加監(jiān)聽事件
  PushNotificationIOS. addEventListener('register',this.register_push);
  //請(qǐng)求權(quán)限
  PushNotificationIOS.requestPermissions();
 }
 //獲取權(quán)限成功的回調(diào)
 register_push = (deviceToken) => {
  //判斷是否成功獲取到devicetoken
  if (deviceToken) {
   this.saveDeviceToken(deviceToken);
  } 
 }
 //保存devicetoken到Installation表中
 saveDeviceToken = (deviceToken) => {
  global.Installation.getCurrent()
   .then(installation => {
   installation.set('deviceType', 'ios');
   installation.set('apnsTopic', '工程bundleid');
   installation.set('deviceToken', deviceToken);
   return installation.save();
  });
 }
 
}

修改App.js文件在componentDidMount初始化推送

import PushService from './pushservice/PushService';
...
componentDidMount () {
 //初始化
 PushService.init_pushService();
}

運(yùn)行項(xiàng)目，必須真機(jī)才能獲取到deviceToken,模擬器獲取不到,看看是否保存的deviceToken,如果保存成功,leandclound后臺(tái)能發(fā)現(xiàn)_Installation表多了一條數(shù)據(jù)

進(jìn)行到這步了就已經(jīng)完成了一半了,現(xiàn)在只需要配置推送證書即可接收推送消息，這里就不介紹配置證書流程了,詳細(xì)步驟請(qǐng)參考 iOS推送證書設(shè)置,推送證書設(shè)置完成后,現(xiàn)在就去leanclound試試看能不能收到推送吧,退出APP，讓APP處于后臺(tái)狀態(tài),

點(diǎn)擊發(fā)送,看是不是收到了消息.

進(jìn)行到這步驟說明推送已經(jīng)完成了一大半了，APP當(dāng)然還需要包括以下功能:

APP在前臺(tái)、后臺(tái)或者關(guān)閉狀態(tài)下也能收到推送消息
點(diǎn)擊通知能夠?qū)ο⑦M(jìn)行操作,比如跳轉(zhuǎn)到具體頁面

APP處于前臺(tái)狀態(tài)時(shí)通知的顯示

當(dāng)APP在前臺(tái)運(yùn)行時(shí)的通知iOS是不會(huì)提醒的(iOS10后開始支持前臺(tái)顯示),因此需要實(shí)現(xiàn)的功能就是收到通知并在前端顯示,這時(shí)候就要使用一個(gè)模塊來支持該功能了,那就是react-native-message-bar

首先就是安裝react-native-message-bar模塊了

yarn add react-native-message-bar //yarn安裝
或者
npm install react-native-message-bar --save //npm安裝

安裝成功之后，在App.js文件中引入并注冊(cè)MessageBar

...
/*
*引入展示通知模塊
 */
const MessageBarAlert = require('react-native-message-bar').MessageBar;
const MessageBarManager = require('react-native-message-bar').MessageBarManager;
...
componentDidMount () {
 //初始化
 PushService.init_pushService();
 MessageBarManager.registerMessageBar(this.alert);
}
...
render() {
 const {Nav} = this.state
 if (Nav) {
  return (
  //這里用到了導(dǎo)航,所以需要這樣寫,布局才不會(huì)亂 MessageBarAlert綁定一個(gè)alert
  <View style={{flex: 1,}}>
   <Nav />
   <MessageBarAlert ref={(c) => { this.alert = c }} />
  </View>
  )
 }
 return <View />
 }

然后再對(duì)PushService進(jìn)行修改,新增對(duì)notification事件監(jiān)聽和推送消息的展示

import { AppState, NativeModules, Alert, DeviceEventEmitter } from 'react-native';
 ...
 //初始化推送
 init_pushService = () => {
  //添加監(jiān)聽事件
  PushNotificationIOS. addEventListener('register',this.register_push);
  PushNotificationIOS.addEventListener('notification', this._onNotification);
  //請(qǐng)求權(quán)限
  PushNotificationIOS.requestPermissions();
 }
 _onNotification = ( notification ) => {
  var state = AppState.currentState;
  // 判斷當(dāng)前狀態(tài)是否是在前臺(tái)
  if (state === 'active') {
   this._showAlert(notification._alert);
  }
 }
 ...
 _showAlert = ( message ) => {
  const MessageBarManager = require('react-native-message-bar').MessageBarManager;
  MessageBarManager.showAlert({
  title: '您有一條新的消息',
  message: message,
  alertType: 'success',
  stylesheetSuccess: {
   backgroundColor: '#7851B3', 
   titleColor: '#fff', 
   messageColor: '#fff'
  },
  viewTopInset : 20
 });

 }

 ...

最后重新運(yùn)行APP并在leanclound發(fā)送一條消息,看是否在APP打開狀態(tài)也能收到通知，到了這里推送就完成了

以上就是本文的全部內(nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

您可能感興趣的文章: