首先是iOS推送流程,這篇文章有了比較詳細(xì)的描述,大家可以了解一下
iOS推送流程

而本文主要是針對(duì)的需求是在已擁有自己的推送服務(wù)器的情況下，怎么在js端獲取已注冊(cè)的device token,并將其交由后臺(tái)去保存。今后的推送流程就是，當(dāng)有消息需要推送時(shí)，后臺(tái)調(diào)用推送服務(wù)器相應(yīng)接口傳遞消息，推送服務(wù)器將消息推給APNS(蘋果推送服務(wù)器)。APNS再通過(guò)注冊(cè)的device token推給相應(yīng)手機(jī)。

如果想直接集成三方推送平臺(tái)的話，可參考以下文章
React-Native-iOS極光推送

1.前置準(zhǔn)備

• iOS推送證書(shū)及App相應(yīng)描述文件
  在擁有Apple開(kāi)發(fā)者賬號(hào)的情況下，可前往蘋果開(kāi)發(fā)者網(wǎng)站進(jìn)行申請(qǐng)，具體流程可見(jiàn)以下優(yōu)秀文章：
  手把手教學(xué)iOS推送證書(shū)申請(qǐng)

2.導(dǎo)入相應(yīng)庫(kù)

1.首先手動(dòng)鏈接PushNotificationIOS的庫(kù)：

step1 添加項(xiàng)目依賴

將node_modules/react-native/Libraries/PushNotificationIOS/RCTPushNotification.xcodeproj文件拖到Xcode界面的Library中

Snip20170704_1.png

step2 添加靜態(tài)庫(kù)

并在Xcode的Link Binary With Libraries中添加libRCTPushNotification.a

Snip20170704_2.png

2.打開(kāi)推送的相關(guān)配置

1.開(kāi)啟推送功能

Snip20170704_4.png

2.開(kāi)啟后臺(tái)推送

Snip20170704_5.png

3.替換項(xiàng)目文件

更改項(xiàng)目中的AppDelegate.m文件

step1 引入依賴庫(kù)、設(shè)置代理

#import <React/RCTPushNotificationManager.h>
#ifdef NSFoundationVersionNumber_iOS_9_x_Max
#import <UserNotifications/UserNotifications.h>
#endif

@interface AppDelegate()<UNUserNotificationCenterDelegate>

@end

step2 添加代碼

在方法

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

中加入以下代碼（目的：根據(jù)系統(tǒng)版本注冊(cè)deviceToken）

  if ([[UIDevice currentDevice].systemVersion floatValue] >= 10.0) {
    //iOS10特有
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    // 必須寫代理，不然無(wú)法監(jiān)聽(tīng)通知的接收與點(diǎn)擊
    center.delegate = self;
    [center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert | UNAuthorizationOptionBadge | UNAuthorizationOptionSound) completionHandler:^(BOOL granted, NSError * _Nullable error) {
      if (granted) {
        // 點(diǎn)擊允許
        NSLog(@"注冊(cè)成功");
        [center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
          NSLog(@"%@", settings);
        }];
      } else {
        // 點(diǎn)擊不允許
        NSLog(@"注冊(cè)失敗");
      }
    }];
  }else if ([[UIDevice currentDevice].systemVersion floatValue] >8.0){
    //iOS8 - iOS10
    [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeSound | UIUserNotificationTypeBadge categories:nil]];
    
  }else if ([[UIDevice currentDevice].systemVersion floatValue] < 8.0) {
    //iOS8系統(tǒng)以下
    [application registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound];
  }
  // 注冊(cè)獲得device Token
  [[UIApplication sharedApplication] registerForRemoteNotifications];

在上個(gè)方法后添加以下方法

// Required to register for notifications
- (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.
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)notification
{
  [RCTPushNotificationManager didReceiveRemoteNotification:notification];
}
// Required for the localNotification event.
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
  [RCTPushNotificationManager didReceiveLocalNotification:notification];
}

在React-Native的JS中獲取推送相應(yīng)參數(shù)

1.導(dǎo)入PushNotificationIOS

import PushNotificationIOS from 'react-native';

2.添加相應(yīng)監(jiān)聽(tīng)事件

   //界面加載完成時(shí) 注冊(cè)監(jiān)聽(tīng)事件 
     componentDidMount() {
          // Add listener for push notifications
         PushNotificationIOS.addEventListener('notification', this._onNotification);
       // Add listener for local notifications
      PushNotificationIOS.addEventListener('localNotification', this._onLocalNotification);
       // Add listener for deviceToken registered
      PushNotificationIOS.addEventListener('register', this._register);
     }

   //界面即將消失時(shí) 注銷監(jiān)聽(tīng)事件 
     componentWillUnMount() {
       // Remove listener for notifications
         PushNotificationIOS.removeEventListener('notification', this._onNotification);
      PushNotificationIOS.removeEventListener('localNotification', this._onLocalNotification);
      PushNotificationIOS.removeEventListener('register', this._register);
    }

   //receive remote notification
   _onNotification(notification) {
   
   }
   //receive local notification
   _onLocalNotification(notification){
         
   }
   //獲取device token
   _register(deviceToken) {
       //使用window保存下devicetoken
       window.iOSDeviceToken = deviceToken;
   }

3.將設(shè)備device token 交由后臺(tái)處理
這個(gè)可能要具體問(wèn)題具體分析，根據(jù)相應(yīng)業(yè)務(wù)需求.
但device token 主要用途是當(dāng)Provider(本地推送服務(wù)器)需要推送消息給APNS(蘋果推送服務(wù)器)時(shí),傳遞相應(yīng)的device token.APNS找到設(shè)備編號(hào)，進(jìn)行推送。