App Crashing : Attempt to revert document

[monish152]

I am getting much crash on
-[UIDocument revertToContentsOfURL:completionHandler:] and assert saying attempt to revert document at URL. Can please anyone help.

[srabon88]

I too am receiving the same error. Is this an issue with the API or the way I'm handling the files before calling the API?

[c1wren]

I'm also having this issue occur. Xcode debugger isn't helping out at all in trying to find the cause of this issue.

[srabon88]

Although I was never able to fix this issue, our app's requirements have changed and I'm no longer using iCloud, but I was able to recreate this issue by putting the phone in airplane mode and calling the API. I believe it has something to do with the app not having internet connection. Maybe this can help point you in the right direction to solve it.

[monish152]

Yes this is known issue of library.

[yorkwang]

I'm also having this issue occur too.

[yorkwang]

Anyone solve this issue?

[c1wren]

I think I've solved it by making sure that only one save can happen per file at a time. I think the issue comes from it trying to save a file while that file is currently being saved.

[yorkwang]

My app only save data into iCloud once when it's opened, and it's all right on iOS 9 and before, since iOS 10, the crash logs appeared. And I found [self.fileManager fileExistsAtPath:[fileURL path]] isn't working when app is just opened on iOS 10 and 11, only after about 10s, it will return the right value.
In the function saveAndCloseDocumentWithName, if [self.fileManager fileExistsAtPath:[fileURL path]] return NO, it will call [document saveToURL:document.fileURL forSaveOperation:UIDocumentSaveForCreating completionHandler:^(BOOL success) all the time.