iOS 推送通知（下）

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  if ([UIDevice currentDevice].systemVersion.doubleValue <= 8.0) {
      /**
         向服务器发请求，要注册推送功能，以此获取到服务器返回的deviceToken
         type 用来说明 支持的通知形式
         如 横幅 声音  角标
       */
       [application registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge|UIRemoteNotificationTypeSound|UIRemoteNotificationTypeAlert];
   }else{
       if (@available(iOS 10.0, *)) {
            //iOS10
            // 1.向用户请求可以给用户推送消息
            UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
            center.delegate = self;
            [center requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error) {
            }];
       }else{
            // 1.向用户请求可以给用户推送消息
            UIUserNotificationSettings *notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert categories:nil];
            [application registerUserNotificationSettings:notificationSettings];
       }
       // 2.注册远程通知(拿到用户的DeviceToken)
       [application registerForRemoteNotifications];
   }
   return YES;
}

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
   // 将用户的用户名和deviceToken发送给服务器,让服务器进行保存备份即可
   NSLog(@"%@", deviceToken);   
   // 例如：<f52a0bc4 57274b41 04684820 f2da2e60 96dd0f8c f24e15b7 7592a8ee b48f5138>
   // 其中我们服务器要保存的 deviceToken 是不包括两边的尖括号的
}
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
{
   NSLog(@"%@", error.userInfo);
}

#import "AppDelegate.h"
#import <UserNotifications/UserNotifications.h>
@interface AppDelegate ()<UNUserNotificationCenterDelegate>
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    if ([UIDevice currentDevice].systemVersion.doubleValue <= 8.0) {
        //向服务器发请求，要注册推送功能，以此获取到服务器返回的deviceToken
        //type 用来说明 支持的通知形式
        //如 横幅 声音  角标
        [application registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge|UIRemoteNotificationTypeSound|UIRemoteNotificationTypeAlert];
     }else{
           if (@available(iOS 10.0, *)) {
                 //iOS10
                 // 1.向用户请求可以给用户推送消息
                 UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
                 center.delegate = self;
                 [center requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error) {
                 }];
             }else{
                 // 1.向用户请求可以给用户推送消息
                 UIUserNotificationSettings *notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert categories:nil];
                 [application registerUserNotificationSettings:notificationSettings];
             }
         // 2.注册远程通知(拿到用户的DeviceToken)
         [application registerForRemoteNotifications]; 
     }
     // 判断是否是通过点击通知打开了应用程序
     if (launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey]) {
           // 远程通知的监听
     }
   return YES;
}
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
     // 将用户的用户名和deviceToken发送给服务器,让服务器进行保存备份即可
     NSLog(@"%@", deviceToken);
}
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
{  
     NSLog(@"%@", error);  
}
#pragma mark 用户在后台状态或者前台状态收到远程通知的方法
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo{
     NSLog(@"收到远程通知");
     // 应用在前台时,也会收到该通知,这时不应该进行页面的跳转
     /**
       UIApplicationStateActive, 前台
       UIApplicationStateInactive, 进入前台
       UIApplicationStateBackground 在后台
      */
      if (application.applicationState == UIApplicationStateActive)
      return; // 前台情况下 不做操作
      // 进行页面的跳转
}
@end

/*
  此方法是新的用于响应远程推送通知的方法
  1.如果应用程序在后台，则通知到，点击查看，该方法自动执行
  2.如果应用程序在前台，则通知到，该方法自动执行
  3.如果应用程序被关闭，则通知到，点击查看，先执行didFinish方法，再执行该方法
  4.可以开启后台刷新数据的功能
    step1：点击target-->Capabilities-->Background Modes-->Remote Notification勾上
    step2：在给APNs服务器发送的要推送的信息中，添加一组字符串如：
    {"aps":{"content-available":"999","alert":"bbbbb.","badge":1}}
    其中content-availabel就是为了配合后台刷新而添加的内容，999可以随意定义
*/
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
     // 前台情况下 不做操作
     if (application.applicationState == UIApplicationStateActive)
     return; 
     //NewData就是使用新的数据 更新界面，响应点击通知这个动作
     completionHandler(UIBackgroundFetchResultNewData);
}

pod 'JPush'

pod 'JPush', '3.1.0'

#pragma mark 对于推送的处理(可以把上面notificationUI的方法替换掉)
- (void)goToMessageViewControllerWithDic:(NSDictionary *)userInfo {
   if ([[userInfo objectForKey:@"go"] isEqualToString:@"update"]) {
       // 应用程序更新
       [[UIApplication sharedApplication]openURL:[NSURL URLWithString:@""]];
       return;
    }
   //将字段存入本地，因为要在你要跳转的页面用它来判断,这里我只介绍跳转一个页面，
   NSUserDefaults *pushJudge = [NSUserDefaults standardUserDefaults];
   [pushJudge setObject:@"push"forKey:@"push"];
   [pushJudge synchronize];
   // 这个是我要跳到的测试页面 (你的目标页面)
   TestViewController *testVC = [[TestViewController alloc]init];
   UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:testVC];//这里加导航栏是因为我跳转的页面带导航栏，如果跳转的页面不带导航，那这句话请省去。
   [self.window.rootViewController presentViewController:nav animated:YES completion:nil];
}