Compania Apple a publicat luni seara pe portalul dedicat dezvoltatorilor de aplicații pentru iOS cea de-a patra versiune a iOS 8.2. Actualizarea vine la aproape o lună distanță de lansarea iOS 8.2 beta 3 și la aproximativ o două luni distanță de prima versiune beta a acestei actualizări. La fel ca și versiunile precedente, iOS 8.2 beta 4 este adresat dispozitivelor iPhone 4s (sau mai recente), iPad 2 (sau mai recente) și iPod touch generația a cincea, însă build-ul său este 12D5461b.
Noua versiune a iOS este disponibilă pentru descărcare și recomandată tuturor dezvoltatorilor de aplicații înregistrați pe Apple Developer Center. iOS 8.2 beta 4 conține corecturi de probleme și îmbunătățiri în privința performanțelor, dar și alte mici modificări pe care le vom menționa pe măsură ce vor fi descoperite.
Dezvoltatorii de aplicații pot efectua actualizarea la iOS 8.2 beta 4 direct de pe propriile dispozitive iPhone, iPad sau iPod touch înregistrate în conturile lor accesând Configurări>General>Actualizare software. De asemenea, actualizarea poate fi efectuată și prin intermediul iTunes. Recomandarea noastră rămâne să descărcați iOS 8.2 beta 4 doar dacă sunteți dezvoltator de aplicații ori dacă aveți dispozitivul înregistrat în contul unui dezvoltator.
iOS 8.2 include SDK-ul WatchKit ce permite dezvoltatorilor să creeze aplicații, Glance-uri și notificări speciale pentru viitorul Apple Watch pe care gigantul din Cupertino îl va lansa în 2015. Data lansării versiunii finale a iOS 8.2 rămâne, din păcate, incertă.
Alături de iOS 8.2 beta 4, compania Apple a mai publicat în această seară cea de-a patra versiune beta a Xcode 6.2 pe care o oferă dezvoltatorilor în special pentru WatchKit.
iOS 8.2 beta 4 – notițele lansării
iOS SDK 8.2 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 8.2 requires a Mac computer running OS X v10.9.3 (Mavericks) 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/.
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 8.2 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 8.2 to develop code.
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.
3rd party calendar sync does not work in this beta.
MARKDOWN_HASHbac3da292a3ab3115dd77ddffe29deecMARKDOWN_HASH instance can no longer be set as a value on multiple CKRecords.
Your app needs the iCloud entitlement to be able to be used as a document provider.
MARKDOWN_HASH00f35e65c39cb6ab99885ed1c66c5211MARKDOWN_HASHentitlement is required.
After rotating the document picker to landscape, the status bar is hidden.
Upon bringing up the document picker in landscape, the containing view may be shifted beneath the navigation bar.
The file system layout of app containers has changed on disk. Rather than relying on hard-coded directory structure, use the
MARKDOWN_HASH69b175d1346e3b1bbcffa76d2698789cMARKDOWN_HASHfunction or the
MARKDOWN_HASH3d5682a582e583b01341ba19be0b2257MARKDOWN_HASH method of the
MARKDOWN_HASH7a15e5de48738da5105f900a84fb0449MARKDOWN_HASH class. See Accessing Files and Directories in File System Programming Guide.
The Thai system font has increased in size to improve readability. This will cause clipping in many places in your UI if you don’t take appropriate action:
MARKDOWN_HASH1918b98ebabb17db4cc1f0879b128aa4MARKDOWN_HASHas much as possible. If you use Interface Builder, make sure that Clip Subviews is not checked. UIKit will grow the clipping region as necessary to not clip text.
Use Dynamic Type. This will ensure that you do not have overlapping glyphs in multiline labels or text fields.
If you can’t do 1 and 2 because you implement your own views, you must implement measures not to clip. You can use CoreText to figure out the appropriate clipping region for a line of text by calling:
To avoid overlapping glyphs in multiline text elements, adjust the line height. An additional 30% is recommended.
This measure will also help your app perform better in other languages, including Arabic, Hindi, and Vietnamese.
MARKDOWN_HASH09ab3f63adc5fa1d0777fa88bd2bf4e8MARKDOWN_HASH has been renamed
Mail handoff and AirDrop may stop working after changing your iCloud password at appleid.apple.com.
Workaround: Sign out and back into iCloud on the device.
MARKDOWN_HASH7b3e86d4c7dbd733bf433f3310d2967fMARKDOWN_HASH might return
MARKDOWN_HASH852438d026c018c4307b916406f98c62MARKDOWN_HASH when running your application in Xcode. If so, open System Preferences, navigate to iCloud > iCloud Drive, and enable Xcode.
Music playback from iTunes in the Cloud does not work in this beta.
The schedule and intended use of
MARKDOWN_HASH18b6cd7afad4dace652a693aee7d7d9bMARKDOWN_HASH is intended as a convenient home for all data/model update logic. If implemented, the system will call at opportune times for the widget to update its state, both when Notification Center is visible, as well as in the background. An implementation is required to enable background updates. It’s expected that the widget will perform the work to update asynchronously and off the main thread as much as possible. Widgets should call the argument block when the work is complete, passing the appropriate
MARKDOWN_HASH5e3ef3a8307d02868792fe7fce1440a0MARKDOWN_HASH. Widgets should NOT block returning from
MARKDOWN_HASH02a4c8da6c9258992c7ffd2bd3f578eeMARKDOWN_HASH on the results of this operation. Instead, widgets should load cached state in
MARKDOWN_HASH02a4c8da6c9258992c7ffd2bd3f578eeMARKDOWN_HASH in order to match the state of the view from the last
MARKDOWN_HASHfc021d35bb0e1df5c5a7c875ec3a3572MARKDOWN_HASH, then transition smoothly to the new data when it arrives.
MARKDOWN_HASH4d14b1f965b503b85da635a7f0b5760fMARKDOWN_HASH class provides a new “priority” property with three associated constants:
MARKDOWN_HASHe43ec4d582461cd1770da977a28afcdbMARKDOWN_HASH priorities can be used to specify how multiple requests and responses to the same host should be prioritized. Note that the priority is a hint and not a strict guarantee of
For complete usage details of
MARKDOWN_HASHe43ec4d582461cd1770da977a28afcdbMARKDOWN_HASH priorities, refer to the
MARKDOWN_HASHf11f83ad6ca9dac65a3e13ec31f675baMARKDOWN_HASH header file, which is provided by the Foundation framework.
To activate Wi-Fi Calling functionality for T-Mobile (U.S. only), follow these steps:
Go to Settings > Phone > Wi-Fi Calling.
Toggle the Wi-Fi Calling switch to ON.
If the carrier does not have the user’s registered emergency address, you will be asked to add it before the feature is activated.
Maintain a backup of your photo library before enabling and while using iCloud Photo Library beta by:
Importing to your Mac using iPhoto
Importing to your Mac using Image Capture
iCloud Photo Library beta will not download photos and videos that were synced to your device from iTunes. Any photos and videos synced to your device from iTunes will be removed when you enable iCloud Photo Library beta.
iPhoto for iOS will not launch on iOS 8 beta. Launching Photos.app will migrate your iPhoto edits to the iOS 8 Photo Library. Make sure your iPhoto for iOS data is included in your device backup.
The ability to automatically optimize device space is enabled for all accounts larger than 5GB.
When using iCloud Family Sharing, both iCloud Photo Sharing and My Photo Stream are enabled.
MARKDOWN_HASH1918b98ebabb17db4cc1f0879b128aa4MARKDOWN_HASHhas a default value of YES for
MARKDOWN_HASH1a5e09bcdb073af26132b8db4547de27MARKDOWN_HASH. This differs from the normal
MARKDOWN_HASHc72be09f2cdc5c55a1e77ddaafc42b51MARKDOWN_HASHdefault of NO.
MARKDOWN_HASHabf8af6bfa5b2308f92c815d30a7ab13MARKDOWN_HASHAPIs have been removed. Please use the
MARKDOWN_HASH8d8fc2c99397f2b72c662d790873d756MARKDOWN_HASHAPI has changed. Specifically,
MARKDOWN_HASHfb146827af6faaabfc4f1ba531bf97fcMARKDOWN_HASHhave been replaced by
MARKDOWN_HASH438b12f01887cad67013bb6d0be06829MARKDOWN_HASHhas been deprecated. Please use
MARKDOWN_HASH9d49a3f7ec8e12a20ef2496b6760f464MARKDOWN_HASHinstead. The designated initializer for
MARKDOWN_HASH6ba253ba1c00724065e8251855627375MARKDOWN_HASHAPI has changed. Specifically,
MARKDOWN_HASHa97b2c144243b2b9d2c593ec268b62f5MARKDOWN_HASHto indicate the success or failure of adding an image to the cache. Note that these methods return NO if the cache size has reached its limit. Delete images from the cache by calling
A page-based WatchKit app can dynamically resequence the pages at the root level using
Rows in a
MARKDOWN_HASHffc2cdff6d99096783fc197102926758MARKDOWN_HASHnow have a default appearance. This appearance can be overridden by specifying the values for background color, margin, corner radius, and height for the row in Interface Builder.
MARKDOWN_HASHf92cbad63c10519b54dc93637ea711ffMARKDOWN_HASHhas changed to
Inserting, deleting, or updating rows of a
MARKDOWN_HASHffc2cdff6d99096783fc197102926758MARKDOWN_HASHmay cause the table to temporarily size incorrectly. Scrolling your interface controller should restore the table to the proper size.
MARKDOWN_HASHfa4098ed598306bf5754363dd46b6bdbMARKDOWN_HASHAPI calls will always give a -909 Autofill disabled error.
MARKDOWN_HASHb3c60d68f4bb8c7565ba511c15503380MARKDOWN_HASHdoes not reflect the color you set using
Wi-Fi Calling (T-Mobile US only)
The carrier name in the status bar will show “T-Mobile Wi-Fi” when the device is able to make and receive Wi-Fi calls.