UITapGesture 只识别 UIImageView 的边框答案

【问题标题】：UITapGesture recognise tap only border wise of UIImageViewUITapGesture 只识别 UIImageView 的边框
【发布时间】：2017-02-09 19:16:21
【问题描述】：

代码如下：

这部分写在**-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath**

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(imageDispalyFullScreenTapped:)];
                singleTap.numberOfTapsRequired = 1;
                singleTap.delegate=self;
                cell.imgDisplay.userInteractionEnabled = YES;
                [cell.imgDisplay addGestureRecognizer:singleTap];

接下来我实现了委托，即**UIGestureRecognizerDelegate**

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    return YES;
}
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    return YES;
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
    return YES;
}

现在在 UIImageView 被点击时实现了选择器

-(void)imageDispalyFullScreenTapped:(UITapGestureRecognizer*)gesture
{
    UIView *tappedView = gesture.view;
    UITableViewCell *cell=[self getSuperViewOfType:[UITableViewCell class] FromView:tappedView];
    NSIndexPath *indexPath=[tblChat indexPathForCell:cell];
    Sock_ModelChat *objChat=[arrDisplay objectAtIndex:indexPath.row];
    if ([objChat.strUrlLocal stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]].length>0) {
        imgSelectedDisplay=[[Sock_DB sharedInstance] getImageForName:objChat.strUrlLocal];

        ImageDisplayerViewController *imageDisplayer=[ImageDisplayerViewController sharedInstance];
        imageDisplayer.delegate=self;
        [self addChildViewController:imageDisplayer];
        imageDisplayer.view.frame=CGRectMake(0, 0, CGRectGetWidth([UIScreen mainScreen].bounds), CGRectGetHeight([UIScreen mainScreen].bounds));
        [self.view addSubview:imageDisplayer.view];
        [imageDisplayer didMoveToParentViewController:self];
    }
}

但问题是每当点击图像视图的边框侧或边缘侧时，都会检测到对图像视图的点击并且选择器 imageDispalyFullScreenTapped 被触发。但是当点击中心或附近时中心，没有检测到抽头，因此相关的选择器也没有触发。

我正在开发 XCode 版本 8.0 (8A218a) 和 iOS 10.0。

【问题讨论】：

标签： ios objective-c iphone uitableview uiimageview

【解决方案1】：

在你的情况下可能是 UserInteraction 被禁用

然后你可以添加手势：

let gesture:UITapGestureRecognizer = UITapGestureRecognizer.init(target:self, action:#selector(handleTap))
gesture.numberOfTapsRequired = 1
gesture.delegate = self
cell.imageView?.addGestureRecognizer(gesture)

然后在您的视图控制器中添加以下功能

func handleTap(sender: UITapGestureRecognizer? = nil) {}

【讨论】：