iphone - Objective-C 如何有选择地禁用用户交互

Question

我有一个包含许多 subview 的主视图 Controller 。我想要的是从 subview 文件中以编程方式禁用除一个 subview 及其 subview 之外的所有其他 View 。但我得到的只是所有卡住的 View 。我做错了什么？

我试过这段代码:

#define kDontDisableUserInteraction 321


- (id)initWithFrame:(CGRect)frame
{
    NSLog(@"initWithFrame");
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        self.tag = kDontDisableUserInteraction;
    }
    return self;
}

-(void)something{

    MVC *myController = [self getMVC];

    for (UIView* subview in myController.view.subviews) {
        NSLog(@"subview.tag %i", subview.tag);
        if (subview.tag != kDontDisableUserInteraction){
            subview.userInteractionEnabled = NO;
        }
    }


    for (UIView *view in self.subviews){
        NSLog(@"enabled!");
        view.userInteractionEnabled = YES;
    }
}

- (MVC *)getMVC {
    Class vcc = [MVC class];    // Called here to avoid calling it iteratively unnecessarily.
    UIResponder *responder = self;
    while ((responder = [responder nextResponder])) if ([responder isKindOfClass: vcc]) return (MVC *)responder;
    return nil;
}

Answer 1

以下链接可能会有帮助:

How to disable touch input to all views except the top-most view?

UIView -- "user interaction enabled" false on parent but true on child?