A Brief Introduction to the various frameworks of the system. Other frameworks will be added later.

A brief introduction to the system framework

ImageIO-the Framework interface can be used to import or export image data and image metadata

Coretelephony-get the imsi number. the number on the back of the SIM card is the electronic serial number of the SIM card, also called the imsi number. This number is the only one in the world.

Audiotoolbox-application-level services: files, streams, alarms, playback, and recording. In iOS, the audio session service is included.

Audiounit-audio unit and audio codec Service

Avfoundation-an objective-C audio playback interface.

Coreaudio-data type and hardware services in OS X

Openal-positioned, low-latency audio service.

Accelerate-the Framework interface can be used to perform mathematical, big numbers, and DSP operations. Compared with the libraries compiled by developers, the framework has the advantage that it has been optimized based on the hardware configurations of various iOS devices. Therefore, you only need to code it once to ensure that it runs efficiently on all devices.

Security-implements RSA asymmetric encryption and decryption. The public key and private key can be obtained to encrypt and decrypt the data.

Systemconfiguration-obtain all hardware information such as USB and Bluetooth.

OpenGL ES-a low-level API for 2D and 3D graphics programming on the iPhone.

Addressbookui-provides several view controllers that allow you to select a person from the address book

Messageui-provides the mail sending function. This framework is the simplest box in the iPhone SDK. It consists of a class, A View Controller, and a protocol.

Quartzcore-the display interface that all users finally see is the result of layer merging, and the layer is the calayer in quartzcore.

Storekit-this framework supports content or services purchased in IOS apps

CoreGraphics-use code to draw the UI, and use the CoreGraphics framework to draw the UI.

Xctext-statistical unit test

A Brief Introduction to the various frameworks of the system. Other frameworks will be added later.