按照下面的步骤, 屏幕上没有出现Notification . 不知道问题出在哪里了?
How to scan a QR code
Open the Camera app from the Home screen, Control Center, or Lock screen.
Select the rear facing camera. Hold your device so that the QR code appears in the viewfinder in the Camera app. Your device recognizes the QR code and shows a notification.
Tap the notification to open the link associated with the QR code.