iOS SDK Release Notes for iOS 8.3
Contents:
Introduction
iOS SDK 8.3 provides support for developing iOS apps. The SDK is packaged with a complete set of tools, compilers, and frameworks for creating apps for iOS and OS X. The tools include the Xcode IDE and the Instruments analysis tool, among many others.
With this software, you can develop apps for iPhone, iPad, or iPod touch running iOS 8. It now includes WatchKit, a framework for developing Apple Watch apps. You can test your apps using the included iOS Simulator.
iOS SDK 8.3 requires a Mac computer running OS X v10.10 (Yosemite) or later.
This version of iOS is intended for installation only on devices registered with the Apple Developer Program. Attempting to install this version of iOS in an unauthorized manner could put your device in an unusable state.
For more information and additional support resources, visit http://developer.apple.com/programs/ios/.
Bug Reporting
For issues not mentioned in the Notes and Known Issues section, please file bugs through the Apple Developer website (https://developer.apple.com/bug-reporting/ios/). Additionally, you may discuss these issues and iOS SDK 8.3 in the Apple Developer Forums: http://devforums.apple.com. To get more information about iCloud for Developers, go to http://developer.apple.com/icloud.
Notes and Known Issues
The following issues relate to using iOS SDK 8.3 to develop code.
App Extensions
Notes
App extensions need an arm64 slice to run on 64-bit devices. If you try to run the armv7 slice on a 64-bit device it won’t work.
Apps need to have an arm64 slice if the bundle contains a framework that both the app and the app extension link against.
HomeKit
Known Issue
HomeKit may not be able to target specific Accessories in rooms using Siri. Instead, commands may affect all HomeKit-connected devices as a group.
UIKit
Note
When linking against iOS 8.3, any code that relies on layout information (such as the frame) of a UIButton
subview when the button is not in the window hierarchy will need to send layoutIfNeeded
to the button before retrieving layout information (such as button.titleLabel.frame
) to ensure that the layout values are up to date.
For example, if you had something like this:
UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem]; |
// code that sets up the button, but doesn’t yet add it to a window |
CGRect titleFrame = button.titleLabel.frame; |
// code that relies on the correct value for titleFrame |
You now need:
UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem]; |
// code that sets up the button, but doesn’t yet add it to a window |
[button layoutIfNeeded]; // This is also safe pre-iOS 8.3 |
CGRect titleFrame = button.titleLabel.frame; |
// code that relies on the correct value for titleFrame |
WatchKit
Note
A bug where continuous background location updates fail to update has been resolved. If your Watch app relies on continuous background location updates to function, it is recommended that you update your WatchKit extension deployment target to iOS 8.3 and submit your app with Xcode 6.3.
Known Issues
Creating an animated image using the
UIImage
methodanimatedImageWithImages:duration:
and then playing the animation usingstartAnimating
ignores the duration and plays back as fast as possible.Workaround: Use
startAnimatingWithImagesInRange:duration:repeatCount:
instead.The appearance of default notifications on a Watch differs slightly from the appearance of default notifications in the Simulator.
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