基于Runtime的iOS编程研究与实现

在iOS开发过程中,因为系统自带方法对应的功能不足,使部分业务需求不能有效地实现.为此,首先对Runtime库的主要API接口用途进行了研究,找到可利用的接口;然后对Runtime消息转发机制进行研究,证明函数调用的实质就是消息的传递;最后通过实际案例,证明了应用Runtime可以解决系统方法不足的问题.结果 表明,通过Runtime库给系统自带的类动态添加或修改成员变量和成员方法具有可行性,可为iOS开发者提供参考和借鉴.

Research and Implementation of iOS Programming Based on Runtime Mechanism

In the process of iOS application development, due to the insufficient functions of the system's own methods, some business requirements can not be effectively realized. In order to solve this problem, the main API interface usage of the Runtime library is studied and the available interfaces are found. The message forwarding mechanism of Runtime is studied to prove that the essence of the function call is the transmission of messages. And through actual cases, it proves that the application of Runtime can solve the problems caused by the lack of system methods. Therefore, it can dynamically add or modify member variables and member methods of the system's own classes through the Runtime library. And finally it is proved that the use of Runtime library can solve the problem of insufficient functions of the system, which can provide reference for iOS developers.