iOS SDK Release Notes for iOS 7.0
Important: This is a preliminary document for an API or technology in development. Although this document has been reviewed for technical accuracy, it is not final. This Apple confidential information is for use only by registered members of the applicable Apple Developer program. Apple is supplying this confidential information to help you plan for the adoption of the technologies and programming interfaces described herein. This information is subject to change, and software implemented according to this document should be tested with final operating system software and final documentation. Newer versions of this document may be provided with future seeds of the API or technology.
Notes and Known Issues
iOS SDK 7.0 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 7.0 requires a Mac computer running OS X v10.8.3 (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, visit http://developer.apple.com/programs/ios/
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 7.0 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 7.0 to develop code.
“Contacts Only” support requires that:
You are logged into iCloud.
The sender and receiver have each other’s Apple ID email addresses in Contacts on their devices.
“Contact Only” currently requires that you have an active Internet connection.
Occasionally, AirDrop will exhibit unreliability in discovery and/or data transfer to peers over Wi-Fi.
The App Store should support the ability to find an app capable of opening a received document based on the document’s Uniform Type Identifier (UTI). Currently, just a blank screen is displayed.
AVCaptureSession now uses your app’s AVAudioSession by default.
AVCaptureSession is unable to produce samples to its AVCaptureAudioDataOutput when the app is running in the background.
Edits made to iCloud Calendar events off-device will not push to the device.
Workaround: Update the calendar manually or trigger a fetch by modifying an event on-device.
Support for Car Display will be provided once compatible systems are available.
When the UIViewGroupOpacity key is not present, the default value is now YES. The default was previously NO.
This means that subviews of a transparent view will first be composited onto that transparent view, then the precomposited subtree will be drawn as a whole onto the background. A NO setting results in less expensive, but also less accurate, compositing: each view in the transparent subtree is composited onto what’s underneath it, according to the parent’s opacity, in the normal painter’s algorithm order.
Moving data from a local sandbox to iCloud using migratePersistentStore causes a crash. Instead, manually migrate the data store by iterating over the objects in the local data store file.
When adding new Apple IDs to Game Center, they must be added through the Game Center app and not Settings.
If you launch a Game Center app while not logged into Game Center, the Game Center login sheet may be unreadable.
The API for sending reminders is present but unimplemented in this seed.
The API for loading leaderboard sets might need to be called a second time for it to succeed.
Activation Lock, a new feature of Find My iPhone, is turned on automatically when Find My iPhone is enabled on any device running iOS 7. Activation Lock requires users to enter their Apple ID and password to turn off Find My iPhone, sign out of iCloud, erase the device, or reactivate the device after an erase. It’s important to sign out of iCloud, or choose Settings > General > Erase All Content and Settings, before transferring a device to a new user to allow them to use the device.
Signing out of an iCloud account with Find My iPhone turned on requires you to enter your Apple ID password. However, in some cases, the keyboard does not appear.
Workaround: Double-tapping the home button will bring up the keyboard.
On rare occasions, users might experience difficulties setting up iCloud Keychain on some of their devices.
Workaround: A temporary Reset iCloud Keychain button is available in iCloud Settings > Account > Account Security.
After users change their iCloud Security Code to Simple or Complex, they will not be able to recover their keychain items from the secure backup.
Workaround: Change the country code field under Account Security so that the user can receive the SMS Verification Code to complete the recovery process.
Sometimes when creating a new Apple ID and choosing to use iCloud in Setup Assistant, iCloud will not be turned on.
Workround: Go to Settings/iCloud and sign in with your Apple ID.
iCloud Keychain users who set up an additional device will receive an approval request to the other devices with iCloud Keychain turned on. The approval request will not be displayed if their screens are off and the devices are idle.
Workaround: Wake up any peer device to accept the approval request.
Users signing out of iCloud by deleting their iCloud account, erasing all contents and settings, or erasing the device via Find My iPhone and signing back in will not be presented with the correct iCloud Keychain setup screens.
Workaround: Use the seed-only iCloud Keychain Reset button.
Users who have a single device with iCloud Keychain on will not be presented with the correct iCloud Keychain setup screens after restoring from a backup.
Workaround: Use the seed-only iCloud Keychain Reset button.
When setting up iCloud Keychain, many iCloud Security Code candidates will be rejected for being too weak.
Workaround: Choose a 4-digit iCloud Security Code that does not have an obvious pattern.
Restoring your device from the same device’s iCloud backup will lose all passwords for Wi-Fi, profiles, accounts, and apps.
When just Calendars or just Reminders is toggled off then back on again in iCloud settings, data may not resync to the device.
Workaround: Turn off both Calendars and Reminders, and then turn them both back on.
Nonpurchased ePubs and PDFs will not be restored when iCloud-restoring an iOS 7 device with a pre-iOS 7 backup. Purchased content will be restored without issue.
Workaround: Use iTunes sync.
In iOS 7, Find My iPhone and Bookmarks toggles are no longer supported on secondary iCloud accounts. When you update your device with either of these options enabled on a secondary iCloud account, they will be turned off with no user notification.
Workaround: Set up the primary iCloud account via Settings/iCloud and then enable Find My iPhone or Bookmarks.
Users cannot use Simple or Complex iCloud Security Codes to recover their keychain items from their secure backup on iPhone 4.
Workaround: Use Random iCloud Security Codes to backup keychain items.
Location Services will be off by default after updating from prior releases. This prohibits Find My iPhone from working.
Workaround: Turn on Location Services in Settings > Privacy > Location Services.
In this seed, GPS-based location is nonfunctional on iPhone 4. This includes AGPS call flows used for 911 emergency services location requests. Wi-Fi and cellular-based location remain functional.
If the calls to renderInContext on the layer backing an MKMapView are made off the main thread, they should be eliminated or moved to the main thread. Failure to do so can cause an app crash. Instead of using renderInContext, use the new MKMapSnapshotter APIs.
Using +[MKMapCamera cameraLookingAtCenterCoordinate:fromEyeCoordinate: eyeAltitude:] may result in the wrong map heading being chosen.
Using +[MKMapSnapshot pointForCoordinate:] returns the wrong result for nonsquare snapshots.
Silent pushes will always wake the device.
Currently, there is no API that lets you inspect the settings controlling your app’s background behavior.
MPMediaPickerController has been disabled for this seed. It will immediately return as if the user canceled the selection.