IOS11 access to album Permissions change issues

Mobile phone up to iOS 11 found before the normal picture save function is not working normally will flash back

The test found that the permissions were not turned on, but Nsphotolibraryusagedescription has been written to plist and is normal on the phone system prior to iOS 11.

By accessing the information, we know

OS11: By default, Access album permissions (Read permissions), no user authorization, no need to add nsphotolibraryusagedescription, suitable for iOS11 before or need add. Add picture to album (write permission), need user authorization, need to add nsphotolibraryaddusagedescription.

<key>NSPhotoLibraryUsageDescription</key><string> Do you want to allow this app to use albums? </string><key>NSPhotoLibraryAddUsageDescription</key><string> Do you want to allow this app to save pictures to albums? </String>

IOS11 access to album Permissions change issues