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Questions tagged [quicklook]

QuickLook an objective-c framework used in iOS and MacOS application development typically for previews.

324 questions
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Get QuickLook preview image for file

Is there any way to get the quick look preview image for a file? I'm looking for something like this: NSImage *image = [QuickLookPreviewer quickLookPreviewForFile:path];
Greg
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Quicklook/QLPreviewController delegate methods are not calling in iOS 10 Xcode 8

Currently I am testing my current version in iOS10. I am using Xcode 8 beta 6 for testing. Here Quicklook/QLPreviewController delegate methods are not calling. This code set had been worked with XCode 7 and iOS 9.3 versions. I checked this issue in…
Wanker Silva
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How can I Quick Look custom objects with Xcode 5 visual debugger?

Xcode 5 has a great new feature where you can hover over a variable name and get a visual representation of a UIColor, UIImage, or even UIBezierPath. I vaguely remember a comment at WWDC where developers could either conform to some protocol or…
Lightbow
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iOS 6.0 Quicklook QLPreviewController errors with: "Cannot find preview item for loaded proxy"

My application has been using the QLPreviewController to display files of all types and in iOS 5.x , it seemed to do so just fine. Now, in iOS 6.0, I get an error and it shows the controller but with a constant loading indicator and never actually…
valheru
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Xcode image Quick Look is not working on M1 Mac

Ever since switching to an M1 Mac for my development, Xcode no longer shows any image previews at break points. Quick Look is not functioning with any images: CGImages, UIImages, CIImages, MTLTextures, etc. I am running in debug mode. Anyone know…
Jeshua Lacock
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How to use QLPreviewPanel?

How do I use QLPreviewPanel? I know it wasn't a public API before, but it is in 10.6. How can I use it to show a preview of a file in a standard QuickLook panel?
Seb Jachec
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Debugging a Quick Look plugin

I'm writing an app which has its own (cross-platform) custom XML-based file type. I want to write a quick look plugin so that things look good in the finder, and have found the tutorial on how this is supposed to work, but apparently I must be doing…
Wouter Verhelst
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Quicklook/QLPreviewController, some problems with iOS 8 but everything works with iOS 7.1

I'm working with QuickLook to view PDF Files. It's working properly in iOS 7.1 but some problems happens with iOS 8 GM. Pictures are better than words, I wanna show you problems : iOS 7.1 Xcode 6 (works fine) Transition with QuickLook (no…
Kevin Machado
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Set windows size of QuickLook Plugin

I'm building a QuickLook plugin. I want to change the width of the windows that pops up when user hits the spacebar. I've read there are two keys in the info.plist file of the project where height and width are customisable. Even if I change those…
Andres
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Debugging Quicklook Plugin in Xcode

I am trying to debug a quicklook plugin in Xcode 4.6. I have created the executable in Edit Scheme. Now, when I build the project the plugin is not installed to the "/Library/Quicklook" path. Rather I didn't find it anywhere. I want to run the…
Vinay Jain
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Remove curled corner from qlgenerator thumbnail

How do I remove the curled icon a thumbnail create in a quicklook plugin? Screenshot of current icon: Screenshot of what I want: GeneratePreviewForURL.m: #include #include #include…
Tyilo
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Display encrypted file using QuickLook framework or UiDocumentInteractionController

I have an encrypted word/excel/pdf file locally stored which I need to preview in my iPad app. I understand that QLPreviewController or UiDocumentInteractionController could be used to preview these files. I can very well use this - (id…
AJ.
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How to avoid Quick Look Simulator from launching on every run?

I am trying to debug my Quick Look Extension target (Preview) for macOS in Xcode and, although I have specified a different executable (qlmanage), it keeps launching the Quick Look Simulator every time I run it in Xcode which is annoying. How can I…
Anubis
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Is it possible to create a standalone Quick Look extension/plug-in?

According to Apple we should new build Thumbnail or Preview Extensions instead of the old Quick Look generators which will be deprecated (probably in Big Sur). There is also no Option to create a Quick Look plug-in project in Xcode anymore. Instead…
Anubis
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iOS - QuickLook - How to open an object in QuickLook without a UIScrollView

Could anyone point me towards a resource which uses QuickLook to open a (preferably but not necessarily a pdf) file without using a UITableView? I do have this example of using QuickLook but it uses a listview which I need to get away from.…
Mytheral
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