chào các bác!
bác nào làm ios giúp em với cái lỗi này với. em úp 1 app mà bị apple rejected nhưng em k biết ý nó nói gì nữa. nó nói lằng nhằng cái vụ sao lưu và icloud gì đó. em chẳng hiểu nó nói gì. app của em có sao lưu hay có dùng icloud gì đâu.

please verify that only the content that the user creates using your app, e.g., documents, new files, edits, etc. is backed up by icloud as required by the ios data storage guidelines. also, check that any temporary files used by your app are only stored in the /tmp directory; please remember to remove or delete the files stored in this location when it is determined they are no longer needed.

data that can be recreated but must persist for proper functioning of your app - or because users expect it to be available for offline use - should be marked with the "do not back up" attribute. for nsurl objects, add the nsurli***cludedfrombackupkey attribute to prevent the corresponding file from being backed up. for cfurlref objects, use the corresponding kcrufli***cludedfrombackupkey attribute.


to check how much data your app is storing:

- install and launch your app
- go to settings > icloud > storage > manage storage
- select your device
- if necessary, tap "show all apps"
- check your app's storage

for additional information on preventing files from being backed up to icloud and itunes, see technical q&a 1719: how do i prevent files from being backed up to icloud and itunes.
if you have difficulty reproducing a reported issue, please try testing the workflow described in technical q&a qa1764: how to reproduce bugs reported against app store submissions.

if you have code-level questions after utilizing the above resources, you may wish to consult with apple developer technical support. when the dts engineer follows up with you, please be ready to provide:
- complete details of your rejection issue(s)
- screenshots
- steps to reproduce the issue(s)
- symbolicated crash logs - if your issue results in a crash log

cảm ơn các bác nhiều