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apple pencil battery life

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Will iOS9 SDK support Pen/Stylus application?
Dear All,Will iOS SDK provide APIs for Stylus/Pen Application Programming while the Apple Pencil has been public launched? That means, how an Application Programmer can let the Application via official iOS SDK APIs use/access the information related to the location and applied force of the pen tip of the Apple Pencil during writing/drawing? Please advise your valuable comments. Thanks.Curtis
Topic: UI Frameworks SubTopic: UIKit Tags:
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862
Sep ’15
UITextView Apple Pencil crash
I used Apple Pencil to input text on UITextView, but the program crashed when I long pressed and tried to use the insert function. warning: Module /Users/baochengzhu/Library/Developer/Xcode/iOS DeviceSupport/iPad14,1 17.0.3 (21A360)/Symbols/usr/lib/libobjc.A.dylib uses triple arm64e-apple-ios17.0.0, which is not compatible with the target triple arm64-apple-ios11.0.0. Enabling per-module Swift scratch context who can help me ?
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462
Nov ’23
Reply to iOS 9 Beta battery life
Hi all,This seems to be a very real issue and the best we can do to help Apple to fix it as soon as they can is to submit radars with battery logs.How to generate battery logs can be found here:https://developer.apple.com/bug-reporting/ios/battery-life/
Topic: App & System Services SubTopic: Core OS Tags:
Jun ’15
Apple Pencil azimuth not working
I have a drawing app that I created and have sold on the App Store since 2018. It requires an Apple Pencil. My app uses the azimuth feature to orient the brush pattern that is drawn on the screen. A user just contacted me and said his azimuth feature is not working. Now it works fine for me, and I have not heard complaints from other users, so this leads me to believe it could be a problem with his Pencil. I wanted to show my code just to rule out that the problem is on my end and also get suggestions on what I should tell this user to do. Should he just contact Apple about it? // calculate the pencil direction let vector1 = touch.azimuthUnitVector(in: selectedCanvas) let angle = atan2(vector1.dy, vector1.dx) let azimu = angle - CGFloat(Double.pi) / 2.0 // adjust for wonky azimuth rotation translation if azimu >= -4.5 && azimu <= 0 { rot = abs(azimu) } else { rot = 6.2 - azimu } The azimu is then used as a point rotation in a basic Bézier curve and dr
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732
Nov ’21
Broken writing (dotted) with Apple Pencil
Hi, I’ve an iPad Air 2020 and IPad mini 6 with iOS 15.2 updated. Suddenly my Apple Pencil 2 started working weirded. It attaches to iPad normally and shows the Pencil charging as usual. However when I start writing, it writes in dotted pattern (broken characters and lines). A day before, everything was fine. Tip is the Pencil is ok. Bluetooth connect is ok. Please help.
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Dec ’21