There is also a new delegate method - that notifies your app about changes in the authorization status of your app (important for multitasking apps).New API for determining if the user has authorized the device/your app to use location services: +.An asset’s metadata now includes its duration: AVMetadataItem.duration.AVAsset now has a property to indicate whether the asset is DRM-protected: AVAsset.hasProtectedContent.Enhancements to Existing Frameworks AVFoundation Marco Arment has already written a great tutorial on this topic: Supporting older versions of iOS while using new APIs.
PRINTOPIA OR FINGERPRINT CODE
This mechanism can simplify the code you need to use to check for the availability of certain features at runtime. Weak Linking Supportĭevelopers can now opt to weak-link certain classes (instead of entire frameworks) to their apps that are not available in their deployment target iOS version.
PRINTOPIA OR FINGERPRINT HOW TO
I have not had the opportunity to investigate this further, especially how to connect a MIDI device to an iPhone or iPad (Apple saysĭevices can be connected via the dock connector or network). The framework also includes the C-based MIDI Services API. MIDINetworkHost, MIDINetworkConnection, and MIDINetworkSession. It consists of three classes to setup and manage MIDI connections: Core MIDIĬore MIDI is a new framework to let an iOS device communicate with MIDI devices such as keyboards and synthesizers. It is routed automatically by the system. Once the user chooses to play your audio using AirPlay, These frameworks is automatically made eligible for AirPlayĭistribution. Apple:ĪirPlay support is built in to the AV Foundation framework and theĬore Audio family of frameworks. Video streaming is not supported at the moment. With the 4.2 SDK, third-party apps can use AirPlay to stream *audio- to AirPlay devices such as the Apple TV. To render the printable content yourself, subclass UIPrintPageRenderer. ( UIViewPrintFormatter) is also supported out of the box. ( UIMarkupTextPrintFormatter), and UIView contents Via built-in subclasses of the abstract UIPrintFormatter class, the printing of plain text ( UISimpleTextPrintFormatter), HTML
PRINTOPIA OR FINGERPRINT PDF
UIPrintInteractionController can directly print images or PDF content (from URLs or in the form of NSData, UIImage, or ALAsset objects). To support printing in your app, first determine if the device supports printing ( +), then retrieve the singleton UIPrintInteractionController with + and provide your content to the print controller via one of its printingItem, printingItems, printPageRenderer, or printFormatter properties. Unfortunately, Apple pulled the functionality to print to any printer shared by an OS X machine on the network at the last minute, but this feature can already be reinstalled with third-party tools such as Printopia or FingerPrint and will hopefully return in a future OS X 10.6.x release. PrintingĪpps can now support wireless printing from iOS devices to supported printers. IPad developers that have been living under a rock over the summer should also have a look at the What’s New in iOS 4.0 and iOS 4.1 documents. Consequently, the iPad gains some features that already came to the iPhone in iOS 4.0 and 4.1, such as: IOS 4.2 is the release that finally unifies the iPhone and iPad SDKs. What follows is a detailed overview of the What’s New in iOS 4.2 and iOS 4.2 API Diffs documents. Now that the final version of iOS SDK 4.2 is available, let’s have a look at what is new.
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