关于"didReceiveRemoteNotification“委托函数

Question

对于高于iOS 10版本的系统，在UNUserNotificationCenterDelegate中，有两种方法可以确定APNS消息方法是从用户单击的地方调用的，还是系统收到消息的：

- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler

- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)(void))completionHandler

而对于iOS 10版本下的系统，应用程序委托方法- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo存在问题，有3种方法可以调用此方法：

2:点击App图标App是否在后台运行或被终止，在App真正启动之前(大约1~3秒)，在这几秒内，如果收到APNS消息，也会调用该方法。

3: App正在运行，拉下通知栏使应用程序处于非活动状态，在此状态下如果收到APNS消息，也会调用此方法。

一般情况下，如果用户没有点击消息进入app (点击2次和3次)，app不应该执行此消息(如根据消息信息打开一个新页面)。

从下面的答案中，发现kind-2已经用applicationState解决了，而kind-3仍然没有留下答案，有人知道如何修复它吗？

Answer 1

您可以使用UIApplication状态进行检查，如下所示：

///- if app is running in foreground
     if (application.applicationState == UIApplicationStateActive) {

         [self pushNotificationReceivedWhileActiveWithInfo:userInfo];

///- if app was running in background
     } else if (application.applicationState == UIApplicationStateBackground) {
        if (self.pushReceivedWhileClosed != YES) {
         [self pushNotificationReceivedWhileInBackgroundWithInfo:userInfo];
       }
     }

此外，您还需要在应用程序完全关闭时处理通知，从通知中打开时从didFinishLaunchingWithOptions获取通知，保存通知数据并在用户到达主屏幕时执行通知。

     ///- when receiving push notification while [app closed]
     if (launchOptions != nil) {
         NSDictionary *dictionary = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
         if (dictionary != nil) {
             NSLog(@"[AppDelegate]##########################AppDelegate######################### Received notification while app CLOSED");

             ///- save the dictionary data and execute it when the app loads for example.
             self.pushReceivedWhileClosed = YES;
         }
     }

Answer 2

在应用程序didReceiveRemoteNotification中检查应用程序状态

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    if ( application.applicationState == UIApplicationStateInactive || application.applicationState == UIApplicationStateBackground  )
    {
         //app was on background
    }
}

Answer 3

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

         NSMutableDictionary *userInfo = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];


               if (userInfo != nil)
                {
                    comingFromNotification = YES;
                }else{
                    comingFromNotification = NO;
                }

}