UIScrollView 中的 UIControll 未接收到触摸事件 [英] UIControll in UIScrollView not receiving touch events

问题描述

我在我的项目中使用 SevenSwitch.我需要将它添加到 UIScrollView 中，但是当我将它添加到滚动视图时，控件似乎无法接收触摸事件.

I use SevenSwitch in my project. I need to add it into a UIScrollView but it seems that the control can not receive touch events when I add it into scroll view.

我尝试子类化 scrollview 并覆盖下面的代码:

I tried sub classing scrollview and overriding below code:

- (BOOL)touchesShouldCancelInContentView:(UIView *)view {
  return NO;
}

还补充:

self.scrollView.delaysContentTouches = NO;

但仍然无法接收触摸事件.如何阻止 scrollview 阻止 UIControl 接收触摸?

but still can not receive the touch event. How can I stop scrollview from preventing the UIControl from receiving touches?

更新

我在我的滚动视图上有一个点击手势，因为我希望当用户点击滚动视图时我调用 [self.scrollView endEditing:YES] 来关闭键盘.当我取下它时，七个开关与水龙头一起工作.

I have a tap gesture on my scroll view because I want that when user tap the scroll view I call [self.scrollView endEditing:YES] to close the keyboard. When I remove it the seven switch is working with tap.

我将以下代码添加到我的点击手势中:

I add below code to my tap gesture:

tap.cancelsTouchesInView = NO;

现在sevenswitch 正在使用tap，但是在使用触摸跟踪切换on 或off 时会出现问题.

and now the sevenswitch is working with tap but there is problems when make the switch on or off with touch tracking.

推荐答案

我已经制作了示例，其中我在滚动视图中有 Sevenswitch 并且它工作正常

I have made sample in which i have sevenswitch inside the scrollview and it's working properly

- (void)viewDidLoad {
    [super viewDidLoad];
    SevenSwitch *mySwitch = [[SevenSwitch alloc] initWithFrame:CGRectZero];
    mySwitch.center = CGPointMake(self.view.bounds.size.width * 0.5, self.view.bounds.size.height * 0.5);
    [mySwitch addTarget:self action:@selector(switchChanged:) forControlEvents:UIControlEventValueChanged];
    //[self.view addSubview:mySwitch];

    mySwitch.on = true;

    [_cntView addSubview:mySwitch];

    SevenSwitch *mySwitch3 = [[SevenSwitch alloc] initWithFrame:CGRectZero];
    mySwitch3.center = CGPointMake(self.view.bounds.size.width * 0.5, self.view.bounds.size.height * 0.5 + 70);
    [mySwitch3 addTarget:self action:@selector(switchChanged:) forControlEvents:UIControlEventValueChanged];
    [self.view addSubview:mySwitch3];

    //self.view.backgroundColor = [UIColor colorWithRed:0.19f green:0.23f blue:0.33f alpha:1.00f];
    mySwitch3.thumbTintColor = [UIColor colorWithRed:0.19f green:0.23f blue:0.33f alpha:1.00f];
    mySwitch3.activeColor = [UIColor colorWithRed:0.07f green:0.09f blue:0.11f alpha:1.00f];
    mySwitch3.inactiveColor = [UIColor colorWithRed:0.07f green:0.09f blue:0.11f alpha:1.00f];
    mySwitch3.onTintColor = [UIColor colorWithRed:0.45f green:0.58f blue:0.67f alpha:1.00f];
    mySwitch3.borderColor = [UIColor clearColor];
    mySwitch3.shadowColor = [UIColor blackColor];

    [_cntView addSubview:mySwitch3];
}

- (void)switchChanged:(SevenSwitch *)sender {
    NSLog(@"Changed value to: %@", sender.on ? @"ON" : @"OFF");
}

其中 _cntView 是我放置在滚动视图中的主容器视图，请检查这是否适合您

In which _cntView is the main container view which i have placed inside the scrollview , please check if this working for you

更新

正如我在评论中提到的，我没有得到您想要通过触摸跟踪表达的意思，但我在滚动视图中使用点击手势制作了示例，这可能会有所帮助

As i mention in the comment i didn't getting what you are trying to say with touch tracking but i have made sample with tap gesture in the scrollview which may help

UIScrollView *scrollview = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width,self.view.frame.size.height)];
    [scrollview setContentSize:CGSizeMake(self.view.frame.size.width,700)];
    [self.view addSubview:scrollview];

    SevenSwitch *mySwitch = [[SevenSwitch alloc] initWithFrame:CGRectZero];
    mySwitch.center = CGPointMake(self.view.bounds.size.width * 0.5, self.view.bounds.size.height * 0.5);
    [mySwitch addTarget:self action:@selector(switchChanged:) forControlEvents:UIControlEventValueChanged];
    //[self.view addSubview:mySwitch];

    mySwitch.on = true;

    [scrollview addSubview:mySwitch];

    SevenSwitch *mySwitch3 = [[SevenSwitch alloc] initWithFrame:CGRectZero];
    mySwitch3.center = CGPointMake(self.view.bounds.size.width * 0.5, self.view.bounds.size.height * 0.5 + 70);
    [mySwitch3 addTarget:self action:@selector(switchChanged:) forControlEvents:UIControlEventValueChanged];
    mySwitch3.thumbTintColor = [UIColor colorWithRed:0.19f green:0.23f blue:0.33f alpha:1.00f];
    mySwitch3.activeColor = [UIColor colorWithRed:0.07f green:0.09f blue:0.11f alpha:1.00f];
    mySwitch3.inactiveColor = [UIColor colorWithRed:0.07f green:0.09f blue:0.11f alpha:1.00f];
    mySwitch3.onTintColor = [UIColor colorWithRed:0.45f green:0.58f blue:0.67f alpha:1.00f];
    mySwitch3.borderColor = [UIColor clearColor];
    mySwitch3.shadowColor = [UIColor blackColor];

    [scrollview addSubview:mySwitch3];


    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(actionSingleTap:)];
    singleTap.numberOfTapsRequired = 1;
    singleTap.cancelsTouchesInView = NO;
    [scrollview addGestureRecognizer:singleTap];
}


- (void)actionSingleTap:(UITapGestureRecognizer *)sender {
    NSLog(@"Tap");
}

- (void)switchChanged:(SevenSwitch *)sender {
    NSLog(@"Changed value to: %@", sender.on ? @"ON" : @"OFF");
}

我已经以编程方式编写了所有新代码，它会检测到 SevenSwitch 之外的触摸事件，还可以检测到七个开关上的触摸/点击.
如果您想让它在 Storyboard 中制作滚动视图并使用以下命令更改编程滚动视图故事板出口

I have made all the new code programatically and it detects touch events outside the sevenSwitch and also detect touch/tap on the seven switch also.
If you want to make it make scrollview in Storyboard and change the programatic scrollview with the storyboard outlet

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