在我的程序中,我想要在触摸时检测滚动视图中的图像。我曾在网上看到有些代码可以帮助解决问题 在子类.h文件中:
@interface AllScrollView : UIScrollView
{
}
@end
在子类.m文件中:
#import "AllScrollView.h"
@implementation AllScrollView
- (id)initWithFrame:(CGRect)frame
{
return [super initWithFrame:frame];
}
- (void) touchesEnded: (NSSet *) touches withEvent: (UIEvent *) event
{
if (!self.dragging)
[self.nextResponder touchesEnded: touches withEvent:event];
else
[super touchesEnded: touches withEvent: event];
}
@end
然后我在主类上更改方法- (void) touchesEnded: (NSSet *) touches withEvent: (UIEvent *) event
。然而,没有任何事情发生,我无法检测到触摸。我错过了什么吗?有人能提供更详细的解决方案吗?非常感谢你!
答案 0 :(得分:0)
我使用滚动视图Gesture Recognizers,它们工作正常。在你的情况下,我会选择一个单击识别器,如下所示:
UITapGestureRecognizer *singleFingerTap = [[UITapGestureRecognizer alloc]
initWithTarget:self action:@selector(handleSingleTap:)];
singleFingerDTap.numberOfTapsRequired = 1;
[self addGestureRecognizer:singleFingerTap];
- (IBAction)handleSingleTap:(UIGestureRecognizer *)sender {
NSLog(@"Single tap detected");
}