QLPreviewController can not preview any file on iOS11

Asked Nov 05 '17 at 07:49

Active Nov 05 '17 at 10:04

Viewed 639 times

My old app is having a problem with QLPreviewController on iOS11 that it suddenly can not preview any file while it worked just fine on iOS10, when I try to skip step to check if can preview the file I got below message:

Unsupported preview item type in -previewItemViewControllerClassWithStyle:; for preview item - [FileName] #PreviewItem.

I tried to create a test app to preview a same file and it worked, quite strange. I have spent a day on this and still not find out the root cause yet. Does anyone know the answer? Thanks.

edited Nov 05 '17 at 10:04

Pranjal Bikash Das

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asked Nov 05 '17 at 07:49

Son Nguyen

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What's the file type you are trying to preview? – Raffael Nov 06 '17 at 09:11
Hi @Raffael, I have tried common files such as pdf, txt, MS words, rtf and none worked. – Son Nguyen Nov 08 '17 at 10:00
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If you think something's changed for the worse, it's always a good idea to file a radar in the Apple developer portal. Small demo projects help illustrate the issue. – Raffael Nov 08 '17 at 10:24
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same problem here. downloaded pdf file, but can not open this Url with QlPreview, did u solve this? ios11 – kemdo Dec 18 '17 at 03:02
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Have you ever solved this? – zaitsman May 09 '19 at 01:20

QLPreviewController can not preview any file on iOS11

0 Answers0