检测应用程序是否从推送通知启动/打开 [英] Detect if the app was launched/opened from a push notification

问题描述

是否可以通过推送通知知道应用是否已启动/打开?

Is it possible to know if the app was launched/opened from a push notification?

我想可以在此处捕获启动事件:

I guess the launching event can be caught here:

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

    if (launchOptions != nil) {
         // Launched from push notification
         NSDictionary *notification = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];

    }
}

但是，当应用程序在后台时，我如何检测它是从推送通知中打开的?

However, how can I detect it was opened from a push notification when the app was in background?

推荐答案

查看此代码:

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    if ( application.applicationState == UIApplicationStateInactive || application.applicationState == UIApplicationStateBackground  )
    {
         //opened from a push notification when the app was on background
    }
}

与

-(void)application:(UIApplication *)application didReceiveLocalNotification (UILocalNotification *)notification

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