一.程序在前台
调用didReceiveRemoteNotification(此时applicationState为UIApplicationStateActive)
二.程序在后台
1.点击push通知:调用didReceiveRemoteNotification(此时applicationState为UIApplicationStateInactive)
2.点击应用程序图标:啥也不调(the application will enter foreground)
三.程序未运行
1.点击push通知:调用didFinishLaunchingWithOptions(launchOptions的UIApplicationLaunchOptionsRemoteNotificationKey跟didReceiveRemoteNotification的userInfo是一样样的)
2.点击应用程序图标:调用didFinishLaunchingWithOptions(launchOptions为nil)