ios - 如果我希望在类被调用后立即运行，我应该在哪里将代码放在Objective-C类中？

Question

抱歉。这是一个非常基本的问题，但我找不到任何答案。我只想在iOS应用启动后立即强制转换变量，因此按钮操作不会过多。

Answer 1

如果要在类级别而不是实例化级别执行某些操作，则可以重载+ (void)load或+ (void)initialize:

+ (void)load {
    // codes will run as soon as the application is loaded into the runtime
}

+ (void)initialize {
    // codes will run the first time this class is being referred to in the application execution
}