新建一个类继承自UIScrollView  并重写下面的方法

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

[super touchesBegan:touches withEvent:event];

if ( !self.dragging )

{

[[self nextResponder] touchesBegan:touches withEvent:event];

}

}

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{

[super touchesEnded:touches withEvent:event];

if ( !self.dragging )

{

[[self nextResponder] touchesEnded:touches withEvent:event];

}

}