本文介绍了一种在iOS应用中通过当前视图追溯到根视图控制器的方法。该方法适用于多种视图层级结构，通过遍历视图的响应者链来定位其所属的视图控制器。
//根据视图获取根视图控制器
- (UIViewController*)viewController {
for (UIView* next = [self superview]; next; next = next.superview) {
UIResponder* nextResponder = [next nextResponder];
if ([nextResponder isKindOfClass:[UIViewController class]]) {
return (UIViewController*)nextResponder;
}
}
return nil;
- (UIViewController*)viewController {
for (UIView* next = [self superview]; next; next = next.superview) {
UIResponder* nextResponder = [next nextResponder];
if ([nextResponder isKindOfClass:[UIViewController class]]) {
return (UIViewController*)nextResponder;
}
}
return nil;
}
使用：
LocalFileViewController *localvc = (LocalFileViewController *)[self viewController]；
扫一扫
2248
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
