Question

我在项目中使用SevenSwitch。我需要将它添加到UIScrollView中，但是当我将它添加到滚动视图中时，控件似乎无法接收触摸事件。

我尝试了子类scrollview并覆盖代码：

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

还补充道：

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？

更新

我的滚动视图上有一个轻击手势，因为我希望当用户点击滚动视图时，我会调用[self.scrollView endEditing:YES]来关闭键盘。当我将其移除时，七个开关正在使用水龙头。

我将以下代码添加到我的点按手势中：

tap.cancelsTouchesInView = NO;

现在sevenswitch正在使用点按，但在使用触摸追踪切换on或off时会出现问题。

Answer 1

我已经制作了样本，其中我在scrollview中有sevenswitch并且它正常工作

- (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");
}

_cntView是我在滚动视图中放置的主要容器视图，请检查这是否适用于您

<强>更新

正如我在评论中提到的那样，我没有得到你想用触摸追踪所说的内容，但我已经在滚动视图中使用了点击手势制作样本，这可能会有所帮助

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");
}

我已经以编程方式创建了所有新代码，它还检测到sevenSwitch外部的触摸事件，并且还检测到七个开关上的触摸/点击。
如果您想在Storyboard中进行滚动视图并更改编程滚动视图与故事板插座

Answer 2

尝试以下可能对您有所帮助

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapGestureCaptured:)];
[scrollView addGestureRecognizer:singleTap];

您将接触到：

-(void)singleTapGestureCaptured:(UITapGestureRecognizer *)gesture
  { 
    CGPoint touchPoint=[gesture locationInView:scrollView];
  }

注意：

滚动视图还有一个手势识别器。默认情况下，任何时候只有1个手势识别器可以处理触摸。您需要让自己成为手势的代表，然后实施gestureRecognizer:shouldRecognizeSimultaneouslyWithGestureRecognizer:以返回YES。这将允许它与滚动视图同时工作。

Answer 3

- (void)viewDidLoad {
    [super viewDidLoad];

    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(actionSingleTap:)];
    singleTap.numberOfTapsRequired = 1;
    [self.scrollView addGestureRecognizer:singleTap];
}

- (void)actionSingleTap:(UITapGestureRecognizer *)sender {

    CGPoint touchPoint = [sender locationInView:self.scrollView];
    NSLog(@"Touch point coordinates are : %f - %f", touchPoint.x , touchPoint.y );

    UIView *hitImageView = [self.scrollView hitTest:touchPoint withEvent:nil];
    NSLog(@"%@", hitImageView);

    switch (hitImageView.tag) {
        case 1:
            // do something
            break;

        default:
            break;
    }

}

UIScrollView中的UIControll未接收到触摸事件

3 个答案: