如何将手势识别器添加到collectionview单元格中的uiview

Question

我有一个全屏水平collectionview。

1. 滚动已禁用
2. 分页已启用，分页有下一个/上一个按钮。

在我的 collectionview 单元格中，我有一个标签，当用户向左/向右滑动它时我想识别它。 在我将手势添加到标签后，没有任何反应。

代码：

collectionViewCell：

func addGesture(){
    let right = UISwipeGestureRecognizer(target: myLabel, action: "test")
    right.direction = UISwipeGestureRecognizerDirection.Left
    answer.addGestureRecognizer(right)
}

视图控制器：

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("formQuestionCell", forIndexPath: indexPath) as QuestionCell

    cell.addGesture()

    return cell
}

我也尝试将目标从 myLabel 切换到 self ，但它仍然不起作用。

谢谢

Answer 1

我会将addGesture 代码移动到视图控制器，以便您也可以处理视图控制器中的滑动。

改变

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell

到

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("formQuestionCell", forIndexPath: indexPath) as QuestionCell

    let right = UISwipeGestureRecognizer(target: self, action: Selector("test:"))
    right.direction = UISwipeGestureRecognizerDirection.Left
    cell.answer.addGestureRecognizer(right) // I am assuming 'answer' is an outlet to the label you want to add a gesture recognizer to in the QuestionCell class

    return cell
}

然后您还需要在视图控制器中实现test:（因为您将目标设置为self）：

func test(gestureRecognizer: UISwipeGestureRecognizer) {
    // Deal with swipe
}

Answer 2

 UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc]
                                         initWithTarget:self action:@selector(clickEventOnImage:)];

[tapRecognizer setNumberOfTapsRequired:1];
[tapRecognizer setDelegate: self];
cell.uiviewelement.userInteractionEnabled = YES;
[cell.uivielement addGestureRecognizer:tapRecognizer];