Scribble

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Enable handwriting-to-text conversion in any text field on iPad with Apple Pencil using the UIScribbleInteraction and UIIndirectScribbleInteraction APIs.

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Critical Rendering Bug in PencilKit on iPad with "More Space" Display Mode & Apple Pencil Hover Interaction
There is a significant rendering issue in PencilKit when using an iPad set to "More Space" display mode, combined with an Apple Pencil that supports hover functionality (e.g., Apple Pencil 2). This problem affects all applications that use PencilKit, including Apple's own Notes and Quick Note. The issue results in flickering black borders and subtle jittering while drawing, which is especially noticeable during tasks requiring precise handwriting, such as writing mathematical expressions. Due to the short strokes and frequent lifts and drops of the pencil, the jitter is much more pronounced, leading to visual discomfort and even dizziness after extended use. Steps to Reproduce: Open Settings on your iPad. Navigate to Display & Brightness > Display Zoom > More Space. Switch to the More Space display mode. Open the Notes app or trigger Quick Note from any application by swiping from the bottom-right corner. Start drawing or writing using the Apple Pencil (with hover functionality) in the writing area. Observe the display anomalies as you hover and write: Flickering black borders appear intermittently around the writing area. The strokes show subtle jittering whenever you lift and lower the pencil. This is particularly disruptive when writing short, precise strokes, such as those in mathematical expressions, where the frequent up-and-down motion makes the jitter more apparent. Expected Results: Smooth and stable drawing experience with no visual artifacts or jittering during interactions with the Apple Pencil, regardless of the display zoom settings. Actual Results: Flickering black borders intermittently appear during drawing. Jittering of strokes is noticeable, particularly when lifting and lowering the Apple Pencil for short strokes. This disrupts precise writing tasks, especially in cases like mathematical notation, where frequent pen lifts and short strokes make the jitter much more apparent. This can lead to discomfort (e.g., dizziness) after extended use. System-Wide Impact: This issue affects all apps that utilize PencilKit, including third-party apps such as Doodle Draw (link). Since PencilKit is a core framework, the rendering bug significantly degrades the user experience across multiple productivity and note-taking applications. Similar Reports: There are numerous discussions about this issue online, indicating that many users are experiencing the same problem. Reddit Discussion: https://www.reddit.com/r/ipad/comments/1f042ol/comment/ljvilv6/ Apple Support Thread Additionally, a feedback report (ID: FB15166022) related to this issue with Notes has been previously filed, but the bug remains unresolved. This bug severely impacts the usability of PencilKit-enabled apps, especially during tasks that involve frequent, precise pencil strokes, such as writing mathematical expressions. We kindly request the development team investigate this issue promptly to ensure a smooth, stable experience with the iPad's "More Space" display mode and Apple Pencil hover interaction.
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288
Sep ’24
PKCanvasView working on preview, but not on simulator or app
Hey, so I am working on a note taking part of my app and I have been working on allowing different inputs. I got the PKCanvas to work on the preview and on the simulator when it is the only thing on the window group. But when I use this View as part of the tool selection in my app, when the user selects the Canvas view it loads but scribbles don't work, only in the preview in Xcode. I don't know why this behavior is happening. The flow in which the PKCanvasView appears is, user taps NavLink to see their notes, in the NotesView they tap to show the toolbar, toolbar has 4 types of input, text, images, audio, scribbles (all other inputs work accordingly), user taps scribbles the view loads correctly but doesn't allow them to draw. I have set the drawingPolicy to anyInput
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327
Jun ’24
Static lines when using Scribble
I just got the iPad air 5th gen and also the Apple Pencil 2nd Gen and right when I started using the scribble function, I would get random static lines along the lettering or random parts of the screen. it only appears when I'm waiting and doesn't affect the actual things I'm writing. The iPad also automatically updated to the beta version of ios 18 because my iPhone is also on the beta. Is anyone else having this issue?
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405
Jun ’24
PKToolPicker Available Tools
When I display the PKToolPicker in my app it looks similar to the image below If you use one of the apps from Apple like Pages or Freeform you see a picker similar to this one. Notice that the PKToolPicker from the Apple app has 6 tools not including the ruler. With the tool all the way to the left being the writing tool. How do you get the picker to display with the writing tool? I have looked over the API and I can see where you can set if the ruler is displayed or not but I can't find anything for the writing tool
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Jun ’24