More iPhone 3 Development: Tackling iPhone SDK 3 (Beginning)

Beginning iOS 6 Development: Exploring the iOS SDK

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Taps, Touches, and Gestures Finding Your Way with Core Location Beginning iOS 5 Development: Beginning iPhone 3 Development: More iOS 6 Development: More iPhone 3 Development: Beginning iOS 6 Development: Skickas inom vardagar.

There's coverage of brand new technologies, with chapters on storyboards and iCloud, for example, as well as significant updates to existing chapters to bring them in line with all the changes that came with the iOS6 SDK. You'll have everything you need to create your very own apps for the latest iOS devices, including the iPhone 4S, iPad 2, and the latest iPod touch. Every single sample app in the book has been rebuilt from scratch using latest Xcodeand the latest bitiOS 6-specific project templates and designed to take advantage of the latest Xcode features.

Assuming only a minimal working knowledge of Objective-C, and written in a friendly, easy-to-follow style, Beginning iOS6 Development offers a complete soup-to-nuts course in iPhone, iPad, and iPod touch programming. The book starts with the basics, walking through the process of downloading and installing Xcode and the iOS6 SDK, and then guides you though the creation of your first simple application. In the iPhone, the app switcher cannot be accessed if there are no apps in the RAM. 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.

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Task completion allows apps to continue a certain task after the app has been suspended. 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 , [96] it was acquired by Apple two months later, [97] [98] [99] and then integrated into iPhone 4S at its release in October Siri supports a wide range of user commands, including performing phone actions, checking basic information, scheduling events and reminders, handling device settings, searching the Internet, navigating areas, finding information on entertainment, and is able to engage with iOS-integrated apps.

Game Center is an online multiplayer "social gaming network" [] released by Apple. A preview was released to registered Apple developers in August. However, Game Center is unofficially available on the iPhone 3G via a hack. 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.

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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. The SDK is a free download for users of Mac personal computers.

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. By the middle of , there were million devices activated.

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During Apple's quarterly earnings call in January , the company announced that they had sold over one billion iOS devices since In the third quarter of , research from Strategy Analytics showed that iOS adoption of the worldwide smartphone market was at a record-low Android accounted for Since its initial release, iOS has been subject to a variety of different hacks centered around adding functionality not allowed by Apple. Since the arrival of Apple's native iOS App Store, and—along with it—third-party applications, the general motives for jailbreaking have changed.

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.

Initially most wireless carriers in the US did not allow iPhone owners to unlock it for use with other carriers.

Modern versions of iOS and the iPhone fully support LTE across multiple carriers despite where the phone was originally purchased from. The closed and proprietary nature of iOS has garnered criticism, particularly by digital rights advocates such as the Electronic Frontier Foundation , computer engineer and activist Brewster Kahle , Internet-law specialist Jonathan Zittrain , and the Free Software Foundation who protested the iPad's introductory event and have targeted the iPad with their " Defective by Design " campaign.

At issue are restrictions imposed by the design of iOS, namely digital rights management DRM intended to lock purchased media to Apple's platform, the development model requiring a yearly subscription to distribute apps developed for the iOS , the centralized approval process for apps, as well as Apple's general control and lockdown of the platform itself.

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. If all goes well, iBoot will then proceed to load the iOS kernel as well as the rest of the operating system. It has its own secure boot process to ensure that it is completely secure. A hardware random number generator is also included as a part of this coprocessor. Each device's Secure Enclave has a unique ID that is given to it when it is made and cannot be changed. This identifier is used to create a temporary key that encrypts the memory in this portion of the system.

iOS - Wikipedia

The Secure Enclave also contains an anti-replay counter to prevent brute force attacks. Until recently, these were typically four numerical digits long. However, since unlocking the devices with a fingerprint by using Touch ID has become more widespread, six-digit passcodes are now the default on iOS with the option to switch back to four or use an alphanumeric passcode. Touch ID is a fingerprint scanner that is embedded in the home button and can be used to unlock the device, make purchases, and log into applications among other functions.

When used, Touch ID only temporarily stores the fingerprint data in encrypted memory in the Secure Enclave, as described above. There is no way for the device's main processor or any other part of the system to access the raw fingerprint data that is obtained from the Touch ID sensor.

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It involves placing data in randomly selected locations in memory in order to make it harder to predict ways to corrupt the system and create exploits. ASLR makes app bugs more likely to crash the app than to silently overwrite memory, regardless of whether the behavior is accidental or malicious. This allows some portions of the memory to be marked as non-executable, working alongside ASLR to prevent buffer overflow attacks including return-to-libc attacks. As mentioned above, one use of encryption in iOS is in the memory of the Secure Enclave. When a passcode is utilized on an iOS device, the contents of the device are encrypted.

This is done by using a hardware AES implementation that is very efficient because it is placed directly between the flash storage and RAM. The iOS keychain is a database of login information that can be shared across apps written by the same person or organization. Third-party applications such as those distributed through the App Store must be code signed with an Apple-issued certificate.

This continues the chain of trust all the way from the Secure Boot process as mentioned above to the actions of the applications installed on the device by users. Applications are also sandboxed , meaning that they can only modify the data within their individual home directory unless explicitly given permission to do otherwise.

For example, they cannot access data that is owned by other user-installed applications on the device. There is a very extensive set of privacy controls contained within iOS with options to control apps' ability to access a wide variety of permissions such as the camera, contacts, background app refresh, cellular data, and access to other data and services. Most of the code in iOS, including third-party applications, run as the "mobile" user which does not have root privileges.

This ensures that system files and other iOS system resources remain hidden and inaccessible to user-installed applications. However, developers are free to override this framework and utilize their own methods of communicating over networks. Two-factor authentication is an option in iOS to ensure that even if an unauthorized person knows an Apple ID and password combination, they cannot gain access to the account.

It works by requiring not only the Apple ID and password, but also a verification code that is sent to a device that is already known to be trusted. From Wikipedia, the free encyclopedia. This article is about Apple's mobile operating system. For other uses, see IOS disambiguation. Original iOS logo, used until left and logo used —17 right.

Usage share of operating systems. Address Space Layout Randomization. List of iOS devices. Information technology portal Apple portal. Retrieved September 17, Archived from the original on June 5, Retrieved October 24, Archived from the original on October 24, Archived from the original on October 26, Archived from the original on October 22, Archived from the original on April 7, Retrieved April 1, Archived from the original on April 2, Archived from the original on January 26, Archived from the original on March 24, Steve Jobs' genius meets Genius". Archived from the original on April 1, Archived from the original on April 12, Archived from the original on February 20, No third-party native apps".

Archived from the original on January 27, Archived from the original on March 30, Archived from the original on May 5, Archived from the original on June 10, Retrieved March 29, Archived from the original on March 29, Archived from the original on May 12, Archived from the original on February 10, Archived from the original on January 28, Archived from the original on June 18, Retrieved June 21, Archived from the original on July 3, Archived from the original on May 11, The anatomy of core data 3.

Adding, displaying, and deleting data 4. The Devil in the detail view 5. Custom managed objects 7. Relationships, Fetched properties, and expressions Part 2: Peer-to-peer over Blutooth using GameKit 9. Bonjour and network streams Working with Data from the web Keeping your interface responsive The road goes ever on Index. His blog can be found at www. He has experience working in Enterprise software, both as a developer for PeopleSoft starting in the late s, and then later as an independent consultant.

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