檢測從推送通知打開的應用程序（后台獲取）

Question

我使用UIBackgroundFetchResult來捕獲推送通知，如下代碼...我使用內容可用性= 1也在后台模式下進行檢測

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)   (UIBackgroundFetchResult))completionHandler {

當應用程序處於活動狀態或后台模式時，推送即將到來並在此處執行，但是當我打開推送時始終無法執行，因為無法進入狀態，我無法檢測到應用是否從推送中打開

 if ( (application.applicationState == UIApplicationStateInactive || application.applicationState == UIApplicationStateBackground)  && (NotiType == 1 || NotiType == 2))
    {

}

Answer 1

您可以通過應用程序委托方法檢查是否從APNS（Apple Push通知服務）啟動了應用程序

application:didFinishLaunchingWithOptions:

您可以在其中檢查是否通過通知啟動了應用程序，

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

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

    }
}

如果您的應用程序在后台運行，則不會調用此方法。 為此，您可以通過這種方式檢查另一種方法，

- (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
    }
}

HTH，享受編碼！