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IOS TECHNOLOGY OVERVIEW PDF

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iOS Technology Overview is an introductory guide for anyone who is new to the iOS platform. It provides an PDF document creation, display, and parsing. Introduction to iOS Development iOS is both an operating system and a Software Development Kit (SDK) to write applications .. iOS Technology Overview. Release Notes. iOS Release Notes · macOS Release Notes · Safari Release Notes · tvOS Release Notes · watchOS Release Notes · Xcode Release Notes.


Ios Technology Overview Pdf

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Present an introduction to iOS Program iOS is the name (as of version ) of Apple's platform for support, PDF, Quartz, Core Animation. ios Technology Overview Contents About the ios Technologies 7 At a Glance 7 The ios Architecture is Layered 7 The ios Technologies Are Packaged as. You might also read iOS Technology Overview to understand how you might use the .. Japanese: nissart.info ○.

You also use that framework to associate your application s windows with one screen or another. For more information about how to connect to, and display content on, an external display, see View Programming Guide for ios. Cocoa Touch Frameworks The following sections describe the frameworks of the Cocoa Touch layer and the services they offer. This framework simplifies the work needed to display contact information in your application and also ensures that your application uses the same interfaces as other applications, thus ensuring consistency across the platform.

This framework builds upon the event- related data in the Event Kit framework, which is described in Event Kit Framework page Specifically, this framework provides support for peer- to- peer connectivity and in- game voice features. Although these features are most commonly found in multiplayer network games, you can incorporate them into applications other than games as well.

The framework provides networking features through a simple yet powerful set of classes built on top of Bonjour. These classes abstract out many of the network details. For developers who might be inexperienced with networking programming, the framework allows them to incorporate networking features into their applications. Introduced in ios 4. Users log in to Game Center and interact with other players anonymously through their alias.

Players can set status messages as well as mark specific people as their friends.

Leaderboards, to allow your application to post user scores to Game Center and retrieve them later. You might use this feature to show the best scores among all users of your application. Matchmaking, to allow you to create multiplayer games by connecting players who are logged into Game Center. Players do not have to be local to each other to join a multiplayer game.

Achievements, to allow you to record the progress a player has made in your game. Challenges, allow a player to challenge a friend to beat an achievement or score. Your game manages the state information for the match and determines which player must act to advance the state of the match.

Advertisements are incorporated into standard views that you integrate into your user interface and present when you want. The views themselves work with Apple s ad service to automatically handle all the work associated with loading and presenting the ad content and responding to taps in those ads. For more information about using iad in your applications, see iad Programming Guide and iad Framework Reference. You can use this map to provide directions or highlight points of interest.

Applications can programmatically set attributes of the map or let the user navigate the map freely. You can also annotate the map with custom images or content. In ios 4. Draggable annotations allow you to reposition an annotation, either programmatically or through user interactions, after it has been placed on the map. Overlays offer a way to create complex map annotations that comprise more than one point.

For example, you can use overlays to layer information such as bus routes, election maps, park boundaries, or weather information such as radar data on top of the map. In ios 6. When the user requests transit- related directions, the Maps app now lets the user choose the app from which to receive those directions. In addition, all apps can ask the Maps app to provide driving directions and display multiple points- of- interest. Message UI Framework Introduced in ios 3.

The composition support consists of a view controller interface that you present in your application. You can prepopulate the fields of this view controller to set the recipients, subject, body content, and any attachments you want to include with the message.

After presenting the view controller, the user then has the option of editing the message prior to sending it. You can use this view controller to create and edit SMS messages without leaving your application. As with the mail composition interface, this interface gives the user the option to edit the message before sending it.

Twitter Framework In ios 6, the Twitter framework Twitter. For more information about this framework, see Social Framework page For information about the classes of the Twitter framework, see Twitter Framework Reference. The technologies in this layer were designed to make it easy for you to build applications that look and sound great. Graphics Technologies High- quality graphics are an important part of all ios applications. The simplest and most efficient way to create an application is to use prerendered images together with the standard views and controls of the UIKit framework and let the system do the drawing.

However, there may be situations where you need to go beyond simple graphics. In those situations, you can use the following technologies to manage your application s graphical content: Core Graphics also known as Quartz handles native 2D vector- and image- based rendering; see Core Graphics Framework page Core Animation part of the Quartz Core framework provides advanced support for animating views and other content; see Quartz Core Framework page Core Image provides advanced support for manipulating video and still images; see Core Image Framework page Core Text provides a sophisticated text layout and rendering engine; see Core Text Framework page The Assets Library framework provides access to the photos and videos in the user s photo library; see Assets Library Framework page For the most part, applications running on devices with Retina displays should work with little or no modifications.

Any content you draw is automatically scaled as needed to support high- resolution screens. For vector- based drawing code, the system frameworks automatically use any extra pixels to improve the crispness 21 22 Media Layer Audio Technologies of your content.

And if you use images in your application, UIKit provides support for loading high- resolution variants of your existing images automatically. For more information about what you need to do to support high- resolution screens, see App- Related Resources in ios App Programming Guide. For information about the graphics- related frameworks, see the corresponding entries in Media Layer Frameworks page Audio Technologies The audio technologies available in ios are designed to help you provide a rich audio experience for your users.

This experience includes the ability to play high- quality audio, record high- quality audio, and trigger the vibration feature on certain devices. The system provides several ways to play back and record audio content. The frameworks in the following list are ordered from high level to low level, with the Media Player framework offering the highest- level interfaces you can use. When choosing an audio technology, remember that higher- level frameworks are easier to use and are generally preferred.

Lower- level frameworks offer more flexibility and control but require you to do more work. The Media Player framework provides easy access to the user s itunes library and support for playing tracks and playlists; see Media Player Framework page The Core Audio frameworks offer both simple and sophisticated interfaces for playing and recording audio content. You use these interfaces for playing system alert sounds, triggering the vibrate capability of a device, and managing the buffering and playback of multichannel local or streamed audio content; see Core Audio page Video Technologies Whether you are playing movie files from your application or streaming them from the network, ios provides several technologies to play your video- based content.

On devices with the appropriate video hardware, you can also use these technologies to capture video and incorporate it into your application. The system provides several ways to play and record video content that you can choose depending on your needs.

When choosing a video technology, remember that the higher- level frameworks simplify the work you have to do to support the features you need and are generally preferred. The frameworks in the following list are ordered from highest to lowest level, with the Media Player framework offering the highest- level interfaces you can use. The Media Player framework provides a set of simple- to- use interfaces for presenting full- or partial- screen movies from your application; see Media Player Framework page Core Media describes the low- level data types used by the higher- level frameworks and provides low- level interfaces for manipulating media; see Core Media Framework page The video technologies in ios support the playback of movie files with the.

Any audio content you play using these frameworks is automatically made eligible for AirPlay distribution. Once the user chooses to play your audio using AirPlay, it is routed automatically by the system.

In ios 5, users can mirror the content of an ipad 2 to an Apple TV 2 using AirPlay for any application. And developers who want to display different content instead of mirroring can assign a new window object to any UIScreen objects connected to an ipad 2 via AirPlay. In addition, the Media Player framework now includes support for displaying Now Playing information in several places, including as part of the content delivered over AirPlay.

Media Layer Frameworks The following sections describe the frameworks of the Media layer and the services they offer. Assets Library Framework Introduced in ios 4. Using this framework, you can access the same assets that are normally managed by the Photos application, including items in the user s saved photos album and any photos and videos that were imported onto the device. You can also save new photos and videos back to the user s saved photos album.

For more information about the classes and methods of this framework, see Assets Library Framework Reference.

You can use these classes to play file- or memory- based sounds of any duration. You can play multiple sounds simultaneously and control various playback aspects of each sound. However, unlike previous versions it displays screenshots of open applications on top of the icon and horizontal scrolling allows for browsing through previous apps, and it is possible to close applications by dragging them up, similar to how WebOS handled multiple cards. Now, instead of the home screen appearing at the leftmost of the application switcher, it appears rightmost.

In the iPad, the Control Center and app switcher are combined. The app switcher in the iPad can also be accessed by swiping up from the bottom. In the iPhone, the app switcher cannot be accessed if there are no apps in the RAM. Ending tasks In iOS 4. As of iOS 7, the process has become faster and easier. In iOS 7, instead of holding the icons to close them, they are closed by simply swiping them upwards off the screen. Up to three apps can be cleared at a time compared to one in versions up to iOS 6.

The assistant uses voice queries and a natural language user interface to answer questions, make recommendations, and perform actions by delegating requests to a set of Internet services. The software adapts to users' individual language usages, searches, and preferences, with continuing use. Returned results are individualized.

Originally released as an app for iOS in February , [] it was acquired by Apple two months later, [] [] [] and then integrated into iPhone 4S at its release in October A preview was released to registered Apple developers in August. In , iOS 7 was released with full bit support which includes native bit kernel, libraries, drivers as well as all built-in applications , [] after Apple announced that they were switching to bit ARMv8-A processors with the introduction of the Apple A7 chip.

While originally developing iPhone prior to its unveiling in , Apple's then- CEO Steve Jobs did not intend to let third-party developers build native apps for iOS, instead directing them to make web applications for the Safari web browser.

Sales of iPads in recent years are also behind Android, while, by web use a proxy for all use , iPads using iOS are still most popular. Android accounted for An additional motivation is that it may enable the installation of pirated apps. On some devices, jailbreaking also makes it possible to install alternative operating systems, such as Android and the Linux kernel.

Primarily, users jailbreak their devices because of the limitations of iOS.

Depending on the method used, the effects of jailbreaking may be permanent or temporary. The exemption allows jailbreaking of iPhones for the sole purpose of allowing legally obtained applications to be added to the iPhone.

Modern versions of iOS and the iPhone fully support LTE across multiple carriers despite where the phone was originally downloadd from. Particularly at issue is the ability for Apple to remotely disable or delete apps at will.

Some in the tech community have expressed concern that the locked-down iOS represents a growing trend in Apple's approach to computing, particularly Apple's shift away from machines that hobbyists can "tinker with" and note the potential for such restrictions to stifle software innovation. The original iPhone OS 1. Below are summaries of the most prominent features. This process is to ensure that no malicious or otherwise unauthorized software can be run on an iOS device.

After the Low-Level Bootloader finishes its tasks, it runs the higher level bootloader, known as iBoot. Applications can programmatically set attributes of the map or let the user navigate the map freely.

Navigation menu

You can also annotate the map with custom images or content. In ios 4. Draggable annotations allow you to reposition an annotation, either programmatically or through user interactions, after it has been placed on the map.

Overlays offer a way to create complex map annotations that comprise more than one point. For example, you can use overlays to layer information such as bus routes, election maps, park boundaries, or weather information such as radar data on top of the map.

In ios 6. When the user requests transit- related directions, the Maps app now lets the user choose the app from which to receive those directions. In addition, all apps can ask the Maps app to provide driving directions and display multiple points- of- interest. Message UI Framework Introduced in ios 3. The composition support consists of a view controller interface that you present in your application.

You can prepopulate the fields of this view controller to set the recipients, subject, body content, and any attachments you want to include with the message.

After presenting the view controller, the user then has the option of editing the message prior to sending it. You can use this view controller to create and edit SMS messages without leaving your application. As with the mail composition interface, this interface gives the user the option to edit the message before sending it. Twitter Framework In ios 6, the Twitter framework Twitter. For more information about this framework, see Social Framework page For information about the classes of the Twitter framework, see Twitter Framework Reference.

The technologies in this layer were designed to make it easy for you to build applications that look and sound great. Graphics Technologies High- quality graphics are an important part of all ios applications. The simplest and most efficient way to create an application is to use prerendered images together with the standard views and controls of the UIKit framework and let the system do the drawing. However, there may be situations where you need to go beyond simple graphics.

In those situations, you can use the following technologies to manage your application s graphical content: Core Graphics also known as Quartz handles native 2D vector- and image- based rendering; see Core Graphics Framework page Core Animation part of the Quartz Core framework provides advanced support for animating views and other content; see Quartz Core Framework page Core Image provides advanced support for manipulating video and still images; see Core Image Framework page Core Text provides a sophisticated text layout and rendering engine; see Core Text Framework page The Assets Library framework provides access to the photos and videos in the user s photo library; see Assets Library Framework page For the most part, applications running on devices with Retina displays should work with little or no modifications.

Any content you draw is automatically scaled as needed to support high- resolution screens.

For vector- based drawing code, the system frameworks automatically use any extra pixels to improve the crispness 21 22 Media Layer Audio Technologies of your content. And if you use images in your application, UIKit provides support for loading high- resolution variants of your existing images automatically. For more information about what you need to do to support high- resolution screens, see App- Related Resources in ios App Programming Guide. For information about the graphics- related frameworks, see the corresponding entries in Media Layer Frameworks page Audio Technologies The audio technologies available in ios are designed to help you provide a rich audio experience for your users.

This experience includes the ability to play high- quality audio, record high- quality audio, and trigger the vibration feature on certain devices. The system provides several ways to play back and record audio content.

The frameworks in the following list are ordered from high level to low level, with the Media Player framework offering the highest- level interfaces you can use. When choosing an audio technology, remember that higher- level frameworks are easier to use and are generally preferred.

Lower- level frameworks offer more flexibility and control but require you to do more work. The Media Player framework provides easy access to the user s itunes library and support for playing tracks and playlists; see Media Player Framework page The Core Audio frameworks offer both simple and sophisticated interfaces for playing and recording audio content. You use these interfaces for playing system alert sounds, triggering the vibrate capability of a device, and managing the buffering and playback of multichannel local or streamed audio content; see Core Audio page Video Technologies Whether you are playing movie files from your application or streaming them from the network, ios provides several technologies to play your video- based content.

On devices with the appropriate video hardware, you can also use these technologies to capture video and incorporate it into your application. The system provides several ways to play and record video content that you can choose depending on your needs. When choosing a video technology, remember that the higher- level frameworks simplify the work you have to do to support the features you need and are generally preferred. The frameworks in the following list are ordered from highest to lowest level, with the Media Player framework offering the highest- level interfaces you can use.

The Media Player framework provides a set of simple- to- use interfaces for presenting full- or partial- screen movies from your application; see Media Player Framework page Core Media describes the low- level data types used by the higher- level frameworks and provides low- level interfaces for manipulating media; see Core Media Framework page The video technologies in ios support the playback of movie files with the.

Any audio content you play using these frameworks is automatically made eligible for AirPlay distribution. Once the user chooses to play your audio using AirPlay, it is routed automatically by the system.

In ios 5, users can mirror the content of an ipad 2 to an Apple TV 2 using AirPlay for any application. And developers who want to display different content instead of mirroring can assign a new window object to any UIScreen objects connected to an ipad 2 via AirPlay.

In addition, the Media Player framework now includes support for displaying Now Playing information in several places, including as part of the content delivered over AirPlay. Media Layer Frameworks The following sections describe the frameworks of the Media layer and the services they offer.

Assets Library Framework Introduced in ios 4. Using this framework, you can access the same assets that are normally managed by the Photos application, including items in the user s saved photos album and any photos and videos that were imported onto the device.

You can also save new photos and videos back to the user s saved photos album. For more information about the classes and methods of this framework, see Assets Library Framework Reference.

You can use these classes to play file- or memory- based sounds of any duration. You can play multiple sounds simultaneously and control various playback aspects of each sound. In ios 3.

AirPlay support is enabled by default, but applications can opt out as needed. The AV Foundation framework is a single source for recording and playing back audio and video in ios. This framework also provides much more sophisticated support for handling and managing media items than higher- level frameworks. Core Audio Native support for audio is provided by the Core Audio family of frameworks, which are listed in Table Core Audio is a C- based interface that supports the manipulation of stereo- based audio.

You can use Core Audio in ios to generate, record, mix, and play audio in your applications. You can also use Core Audio to trigger the vibrate capability on devices that support it. Core Audio Framework Reference. Provides playback and recording services for audio files and streams. This framework also provides support for managing audio files, playing system alert sounds, and triggering the vibrate capability on some devices. See Audio Toolbox Framework Reference.

iOS Architecture

Provides services for using the built- in audio units, which are audio processing modules. Audio Unit Framework Reference. Provides low- level MIDI services. Provides access to the audio tap interfaces. Quartz is the same advanced, vector- based drawing engine that is used in OS X. It provides support for path- based drawing, anti- aliased rendering, gradients, images, colors, coordinate- space transformations, and PDF document creation, display, and parsing.

Although the API is C based, it uses object- based abstractions to represent fundamental drawing objects, making it easy to store and reuse your graphics content. You can use the built- in filters for everything from simple operations like touching up and correcting photos to more advanced operations like face and feature detection.

iOS Architecture

The advantage of using these filters is that they operate in a nondestructive manner so that your original images are never changed directly. To create other types of filters, you can create and configure a CIFilter object for the appropriate filter type. You use this framework to send and receive MIDI messages and to interact with MIDI peripherals connected to an ios- based device using the dock connector or network.

Core Text Framework Introduced in ios 3.A view controller can override these values if something nonstandard is required. For vector- based drawing code, the system frameworks automatically use any extra pixels to improve the crispness 21 22 Media Layer Audio Technologies of your content. For information about how to incorporate printing support into your applications, see Printing in Drawing and Printing Guide for ios.

About AirPlay 5. For information about using documents in your apps, see Document-Based App Programming Guide for ios. At build time, Xcode takes the contents of the storyboard file and divides it up into discrete pieces that can be loaded individually for better performance.

And developers who want to display different content instead of mirroring can assign a new window object to any UIScreen objects connected to an ipad 2 via AirPlay. It will be released to the public in fall See Audio Toolbox Framework Reference.