Question

io 如何取得uiview最上层子视图

Answer 1

因为要在uitableviewcell里面的uiview模块里面，调用self.navigationcontroller pushviewcontroller推入一个新的viewcontroller，需要获取其上层的uiviewcontroller，找到如下的代码

id object = [self nextResponder];

while (![object isKindOfClass:[UIViewController class]] &&
object != nil) {
object = [object nextResponder];
}

UIViewController *uc=(UIViewController*)object;