如何为TapGesture识别器设置框架

Question

我有一个imageview，我只想点击imageview的一侧。是否可以为手势设置框架？任何人都可以提供解决方案吗？

Answer 1

使用UIGestureRecognizerDelegate，我认为你可以得到关于如何比较的想法：

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch { 
    if ([touch locationInView:yourview].x < somePoint.x) { 
     return false; 
    } else { 
     return true; 
    } 
} 

Answer 2

你可以覆盖在ImageView的顶视图和水龙头识别到这个新的观点，这样的事情会使图像tapable

UIView tapView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, imageView.frame.size.width/2, imageView.frame.size.height)]; 

[imageView addSubView:tapView] 

UITapGestureRecognizer *singleFingerTap = 
    [[UITapGestureRecognizer alloc] initWithTarget:self 
              action:@selector(handleSingleTap:)]; 
[tapView addGestureRecognizer:singleFingerTap]; 

Answer 3

您可以简单地把UIView的上框，按您的要求，您的ImageView顶部的左侧，把轻敲姿势上的UIView。

您可以通过storyboard/xib或以编程方式完成此操作。

以编程方式，例如 - 您只想点击宽度为50px的imageView区域。对于这一点：

UIView *vw = [[UIView alloc] initWithFrame:CGRectMake(imgView.frame.origin.x, imgView.frame.origin.y, 50, imgView.frame.size.height)]; 

    // add gesture to view 
    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapGesture:)]; 
    tapGesture.numberOfTapsRequired = 2; 
    [vw addGestureRecognizer:tapGesture]; 

    [imgView addSubview:vw]; 

现在处理您双击

-(void)handleTapGesture:(UITapGestureRecognizer *)gesture 
{ 
    // handle double tap 
}