You are using an outdated browser. Please upgrade your browser to improve your experience.
Bryan M. Wolfe
| November 18, 2013
Bug Fixes And Performance Enhancements Arrive With Apple's iOS 7.1 Beta
Apple has released the first beta for iOS 7.1. The update doesn't appear to include anything significant, at least in terms of new features. However, it does come with a number of bug fixes, and performance enhancements. As first noted by 9to5Mac, iOS 7.1 features a new dialog in Notification Center when cleared. The Yahoo logo that appeared in Settings in iOS 7.04 is now also shown in Notification Center, and the native Weather and Stocks app. The iOS 7.1 release notes are as follows:
iOS SDK 7.1 provides support for developing iOS apps, and it includes the complete set of Xcode tools, compilers, and frameworks for creating apps for iOS and OS X. These 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 7. You can also test your apps using the included iOS Simulator, which supports iOS 7. iOS SDK 7.1 requires a Mac computer running OS X v10.8.4 (Mountain Lion) 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, visithttp://developer.apple.com/programs/ios/. Bug Reporting To report any bugs not mentioned in the Notes and Known Issues section, use the Apple Bug Reporter on the Apple Developer website (http://developer.apple.com/bugreporter/). Additionally, you may discuss these issues and iOS SDK 7.1 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 7.1 to develop code. Bluetooth Known Issue 32-bit apps running on a 64-bit device cannot attach to BTServer. CFNetwork Fixed in iOS 7.1 beta Previously, if the server-side closed an HTTP request with TCP FIN without sending any bytes of HTTP header or HTTP body, NSURLConnection would synthesize an empty HTTP/1.1 200 OK response. This is now fixed, and the request will result in an error instead of a successful load with a synthesized response. Notes A new compatibility behavior has been added to address an issue where some web servers would send the wrong Content-Length value for “Content-Encoding: gzip” content. Previously, NSURLConnection and NSURLSession would send a “network connection was lost” / NSURLErrorNetworkConnectionLost (-1005) error in this situation. The compatibility behavior applies only if the Content-Length value exactly matches the expanded gzip’d content. It won’t apply for “off by 1” or similar miscounting. Core Text Fixed in iOS 7.1 beta Previously, text drawn with CTFrameDraw did not correctly place lines to account for the paragraphSpacing attribute of NSParagraphStyle. This has been addressed in iOS 7.1 beta. Crash Logs Known Issue Crash logs will not appear in Diagnostics & Usage Data in Settings. The logs will still be available when synced off the device. GLKit Fixed in iOS 7.1 beta If loaded with GLKTextureLoader, pngcrush images that have alpha were not unpremultiplied. High Precision Timers Fixed in iOS 7.1 beta When sleeping or waiting for extremely precise time intervals, timers were delayed by up to 1 millisecond. iTunes Known Issue Loading an iTunes Match library (or your purchased music history) may take much longer than expected, especially on larger libraries. If your library does not sync right away, please wait 30 minutes and try to access it again. Multipeer Connectivity Fixed in iOS 7.1 beta The MCSessioninitWithPeer: method has now been implemented properly. For more information on MCSession APIs, watch WWDC 2013: Nearby Networking with Multipeer Connectivity. UIKit Known Issues If a UITextField or a UILabel that is baseline aligned with constraints has attributes that change after the constraints have been added, the layout may be incorrect. The exception to this is -setFont: on UILabel, which should work as expected. Workaround: Avoid making changes in UITextField or UILabel after adding baseline-alignment constraints. If you must make changes, you should remove the constraints and then reapply them afterward. Note that this is a performance hit, so don’t do it unless it is necessary. The backIndicatorTransitionMask from a storyboard or a xib will not be interpreted correctly at runtime. Workaround: Set the backIndicatorTransitionMask in code.We'll let you know when iOS 7.1 is released to the general public, or if another beta is released for developers.