我有以下代码:
m_singleView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, nWidth - 1, nHeight - 1)];
m_singleView.backgroundColor = [UIColor clearColor];
UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch:)];
[pinchGesture setCancelsTouchesInView:YES];
[m_singleView addGestureRecognizer:pinchGesture];
[m_singleView setUserInteractionEnabled:YES];
[m_MainView addSubview:m_singleView];
我遇到的问题是捏合事件由于某种原因没有触发。但是,如果我将行从 [m_singleView addGestureRecognizer:pinchGesture]
更改为 [m_MainView addGestureRecognizer:pinchGesture];
那么一切都会正常...我可以不添加事件吗只有 subview ?
谢谢!
最佳答案
是的,你可以给 subview 添加手势。我测试了您的代码,如下所示,工作正常。
首先添加委托(delegate)。
@interface ViewController : UIViewController<UIGestureRecognizerDelegate>
- (void)viewDidLoad {
[super viewDidLoad];
UIView *m_singleView = [[UIView alloc] initWithFrame:CGRectMake(50, 50, self.view.frame.size.width - 50, self.view.frame.size.height - 50)];
self.view.backgroundColor=[UIColor greenColor];
m_singleView.backgroundColor = [UIColor redColor];
UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch)];
pinchGesture.delegate=self;
[pinchGesture setCancelsTouchesInView:YES];
[m_singleView addGestureRecognizer:pinchGesture];
[m_singleView setUserInteractionEnabled:YES];
[self.view addSubview:m_singleView];
}
-(void)pinch{
NSLog(@"In PInch");
}
你已经使用了捏合手势,所以你可以像下面这样使用它。
关于ios - 带有 subview 的 UIPinchGestureRecognizer 问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53937804/