我在 ViewController 中使用 UICollectionView 来显示图像，我希望用户能够在长按时删除照片，但我无法检测到长按手势。我已阅读了之前的所有讨论，并尝试在我的项目中实现它们，但它们都不适合我。
最佳答案
通过下面的行为您的 ImageView 启用用户交互
imgview.userInteractionEnabled =YES;
//这里是示例代码
UILongPressGestureRecognizer *gestureRecognizer = [[UILongPressGestureRecognizer alloc] init];
[gestureRecognizer addTarget:self action:@selector(imgLongPressed:)];
gestureRecognizer.delegate = self;
imgview.userInteractionEnabled =YES;
[imgview addGestureRecognizer: gestureRecognizer];
- (void) imgLongPressed:(UILongPressGestureRecognizer*)sender
{
UIImageView *view_ =(UIImageView*) sender.view;
CGPoint point = [sender locationInView:view_.superview];
if (sender.state == UIGestureRecognizerStateBegan)
{
}
else if (sender.state == UIGestureRecognizerStateChanged)
{
}
else if (sender.state == UIGestureRecognizerStateEnded)
{
}
}
关于ios - UICollectionView Objective-c 的长按点击手势识别器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38242680/