目前有两种方法

第一种 通过 Category 扩展 UIScrollView 对象,添加触摸事件,(不建议,后续扩展不方便)代码如下

@implementation UIScrollView (ExtendTouch)- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {    [[self nextResponder] touchesBegan:touches withEvent:event];    [super touchesBegan:touches withEvent:event];    UITouch *touch = [touches anyObject];    CGFloat startx = [touch locationInView:self].x;    NSLog(@"%f",startx);}-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {    [[self nextResponder] touchesMoved:touches withEvent:event];    [super touchesMoved:touches withEvent:event];}- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {    [[self nextResponder] touchesEnded:touches withEvent:event];    [super touchesEnded:touches withEvent:event];}

　第二种 添加手势 (推荐,易于维护)

//添加点按击手势监听器    UITapGestureRecognizer *tapGesture=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapUiscrollView:)];    //设置手势属性    tapGesture.delegate = self;    tapGesture.numberOfTapsRequired=1;//设置点按次数，默认为1，注意在iOS中很少用双击操作    tapGesture.numberOfTouchesRequired=1;//点按的手指数    [self.scrllview addGestureRecognizer:tapGesture];

　　

@interface ViewController ()