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The source code of the core components of the iPhone operating system has been leaked recently. Hundreds of millions of iOS devices may face security threats !, IPhone IOS Recently, the source code of the core components of the iPhone operating system has been leaked. This message is from the discovery that the iBoot source code of iOS is shared on GitHub. IBoo

Afnetworking is a lightweight iOS network communications library, after the ASI class library is not updated after the developers have a good choice; Afnetworking class Library Source code download and use tutorial: https://github.com/AFNetworking/AFNetworking If you want to delve into the official documentation: http://afnetworking.github.com/AFNetworking/ The use of the Afnetworking class library in the open source China

The iOS application is that Xcode will optimize the PNG file so that the picture preview is not displayed. So how do you look at these optimized files? The optimized action is done by the Pngcrush tool, and you can find it in Xcode. Pngcrush supports command line option-revert-iphone-optimizations. This option enables you to undo optimizations that are made during Xcode compilation. So, to see the optimized file, you should first undo the optimizati

1. iOS offers two high quality graphics rendering methods: A. OpenGL es for rendering B.quartz,core Animation, Uikit for drawing 2. The OpenGL ES Framework is mainly applicable to game or high frame rate application development. A C-language based interface for creating 2D and 3D content. Graphics system of Uikit 3. All the paints in iOS, regardless of OpenGL ES, Quartz, Uikit, or core Animation, occur i

Releasing objects in MRR is implemented through release or autorelease messages, which immediately frees reference count-1, sending autorelease messages to put objects in a memory-free pool for deferred release, and the object's reference count does not really change. Instead, a record is added to the memory-free pool until all objects in the pool are notified to send the release message and the reference count is actually reduced before the pool is destroyed. Because it will delay the release

Passbook is a new feature of iOS 6 that can only be used in iphone and ipod Touch devices. It can help us manage the electronic Membership card, scorecard, coupons and so on that the merchant issues. This will have a far-reaching impact on future e-business. Merchants through the issue of membership cards, card, coupons and so on, improve interaction with consumers, attract more people to spend. Passbook was born to put all these "cards" and "coupons"

view, the creation of a cell is invoked. This logic doesn't seem to be a problem, but does it really matter? When creating the call, we print the message using NSLog and print the address of the cell that was created. We find that if the amount of data is very large, the user scrolls back and forth within a short period of time, creates a lot of cell, opens up space, and if it's rolling back, by printing the address, we find that it doesn't reuse the cell that was created before, but instead r