问题
Hey can anybody tell how to get custom payload of push notification when app is in background?
If your app is in the background and you receive a push notification and the user taps app "View", the application is launched and application:didFinishLaunchingWithOptions: would get called. In this case we can access custom notification payload via UIApplicationLaunchOptionsRemoteNotificationKey from userInfo dictionary.
If your app is in the background and you receive a push notification and the user taps app icon, it brings the application to the foreground.
When that happens, only applicationDidEnterForeground: is called, and there is no way to access the payload of the push notification.
My requirement is to register for Badge only, no alert so no 'View' button to launch app when user receives notification in background. When user receives notification and application is in background, user taps app icon applicationDidEnterForeground: is called. So we have no way to access launchOptions dictionary or userInfo dictionary from where we can get notification payload.
Am I missing something here?
回答1:
application:didReceiveRemoteNotification: is called when the user taps on the notification in the statusbar drop down if your app is running in the background. The link you referred to in your answer explains how to use it.
Edit: Sorry, I misunderstood your question (missed that you were doing badge-only). Feel free to down vote me :(
回答2:
I finally came to know that getting custom payload of push notification while app is running background is not possible. This link sums it up.
来源：https://stackoverflow.com/questions/7173452/get-custom-payload-of-push-notification-while-app-is-running-background