UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapTapTap:)];
[self.view1 addGestureRecognizer:tapGesture];
[self.view2 addGestureRecognizer:tapGesture];
[tapGesture release];
在上面的代码中，只能识别view2上的点击。如果我注释掉第三行，那么点击view1会被识别。如果我是对的，你只能使用手势识别器一次，我不确定这是一个错误还是它只是需要一些更多的文档。
当前回答
我知道这是一个旧帖子，但我认为类似的东西，希望它对其他人有用。我简单地将我的imageViews存储在一个数组中，并将其分配给一个函数中的相同手势识别器来设置每个图像视图。
在我的viewDidLoad():
imageViewList = [imageView, imageView2, imageView3]
setupImageViews(imageViews: imageViewList)
设置图像视图的函数:
func setupImageViews(imageViews: [UIImageView]) {
for imageView in imageViews {
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(imageTapped(tapGestureRecognizer:)))
imageView.isUserInteractionEnabled = true
imageView.addGestureRecognizer(tapGestureRecognizer)
//set up image to be displayed with the right aspect
imageView.autoresizingMask = [.flexibleWidth, .flexibleHeight, .flexibleBottomMargin, .flexibleRightMargin, .flexibleLeftMargin, .flexibleTopMargin]
imageView.contentMode = .scaleAspectFit // OR .scaleAspectFill
imageView.clipsToBounds = true
}
}
在动作选择器imagetapping()中，您可以为所选中的任何图像视图设置相应的代码。
@objc func imageTapped(tapGestureRecognizer: UITapGestureRecognizer)
{
switch tapGestureRecognizer.view {
case imageView:
print("tapped Image View 1") //add your actions here
case imageView2:
print("tapped Image View 2") //add your actions here
case imageView3:
print("tapped Image View 3") //add your actions here
default:
print("Tap not detected")
}
_ = tapGestureRecognizer.view as! UIImageView
//additional code...
}
其他回答
通过'<UIScrollViewDelegate>'重写类
在.m类中使用这个方法:
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
return YES;
}
此方法将帮助您在一个视图上启用多个滑动。
我使用下面的方法来解决这个问题。
for (UIButton *aButton in myButtons) {
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)];
longPress.minimumPressDuration=1.0;
[aButton addGestureRecognizer:longPress];
[longPress release];
}
然后在我的handleLongPress方法中，我只是设置一个UIButton等于手势识别器的视图，并根据该按钮分支我所做的事情
- (void)handleLongPress:(UILongPressGestureRecognizer*)gesture {
if ( gesture.state == UIGestureRecognizerStateEnded ) {
UIButton *whichButton=(UIButton *)[gesture view];
selectedButton=(UIButton *)[gesture view];
....
}
我知道这是一个旧帖子，但我认为类似的东西，希望它对其他人有用。我简单地将我的imageViews存储在一个数组中，并将其分配给一个函数中的相同手势识别器来设置每个图像视图。
在我的viewDidLoad():
imageViewList = [imageView, imageView2, imageView3]
setupImageViews(imageViews: imageViewList)
设置图像视图的函数:
func setupImageViews(imageViews: [UIImageView]) {
for imageView in imageViews {
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(imageTapped(tapGestureRecognizer:)))
imageView.isUserInteractionEnabled = true
imageView.addGestureRecognizer(tapGestureRecognizer)
//set up image to be displayed with the right aspect
imageView.autoresizingMask = [.flexibleWidth, .flexibleHeight, .flexibleBottomMargin, .flexibleRightMargin, .flexibleLeftMargin, .flexibleTopMargin]
imageView.contentMode = .scaleAspectFit // OR .scaleAspectFill
imageView.clipsToBounds = true
}
}
在动作选择器imagetapping()中，您可以为所选中的任何图像视图设置相应的代码。
@objc func imageTapped(tapGestureRecognizer: UITapGestureRecognizer)
{
switch tapGestureRecognizer.view {
case imageView:
print("tapped Image View 1") //add your actions here
case imageView2:
print("tapped Image View 2") //add your actions here
case imageView3:
print("tapped Image View 3") //add your actions here
default:
print("Tap not detected")
}
_ = tapGestureRecognizer.view as! UIImageView
//additional code...
}
您可以在视图上创建一个通用扩展来轻松地添加手势识别器。 这只是一个例子，但它可以是这样的
extension UIView {
func setGestureRecognizer<Gesture: UIGestureRecognizer>(of type: Gesture.Type, target: Any, actionSelector: Selector, swipeDirection: UISwipeGestureRecognizer.Direction? = nil, numOfTaps: Int = 1) {
let getRecognizer = type.init(target: target, action: actionSelector)
switch getRecognizer {
case let swipeGesture as UISwipeGestureRecognizer:
guard let direction = swipeDirection else { return }
swipeGesture.direction = direction
self.addGestureRecognizer(swipeGesture)
case let tapGesture as UITapGestureRecognizer:
tapGesture.numberOfTapsRequired = numOfTaps
self.addGestureRecognizer(tapGesture)
default:
self.addGestureRecognizer(getRecognizer)
}
}
}
要在视图上添加一个2点识别器，你只需调用:
let actionSelector = #selector(actionToExecute)
view.setGestureRecognizer(of: UITapGestureRecognizer.self, target: self, actionSelector: actionSelector, numOfTaps: 2)
您还可以轻松地添加一个滑动识别器
view.setGestureRecognizer(of: UISwipeGestureRecognizer.self, target: self, actionSelector: actionSelector, swipeDirection: .down)
等等。 只需要记住，目标必须链接到选择器。
你可以用这段代码我的视图，也就是xib中的imageviews。
- (void)viewDidLoad
{
firstIV.tag = 501;
secondIV.tag = 502;
thirdIV.tag = 503;
forthIV.tag = 504;
[self addTapGesturetoImageView: firstIV];
[self addTapGesturetoImageView: secondIV];
[self addTapGesturetoImageView: thirdIV];
[self addTapGesturetoImageView: forthIV];
}
-(void)addTapGesturetoImageView:(UIImageView*)iv
{
iv.userInteractionEnabled = YES;
UITapGestureRecognizer * textfielBGIVTapGasture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(textfielBGIVTapped:)];
textfielBGIVTapGasture.numberOfTapsRequired = 1;
[iv addGestureRecognizer:textfielBGIVTapGasture];
}
- (void)textfielBGIVTapped:(UITapGestureRecognizer *)recognizer {
int tag = recognizer.view.tag-500;
switch (tag) {
case 1:
{
//firstIV tapped;
break;
}
case 2:
{
//secondIV tapped;
break;
}
case 3:
{
//thirdIV tapped;
break;
}
case 4:
{
//forthIV tapped;
break;
}
default: {
break;
}
}
}
