ISInvocationHookProxy:挂钩目标的每个 NSInvocation 的代理对象

ISInvocationHookProxy 挂钩目标的每个 NSInvocation 的代理对象。 用法 NSString *object = [[ NSString alloc ] init ]; ISInvocationHookProxy *proxy = [[ISInvocationHookProxy alloc ] initWithTarget: object]; proxy.hookBlock = ^( NSInvocation *invocation) { // will be called when [(NSString *)proxy length]; is executed }; [( NSString *)proxy length ]; 覆盖调用的返回值 NSString *object = @" foo " ; ISInvocationHookProxy