速递花新特性界面滑动一段后scrollView才滚动的 实现方法

1.让 scrollView不可以根据用户手指滚动

self.scrollView.scrollEnabled =NO;

2.给 scrollView添加手势

    UIGestureRecognizer *gesture = [[UIPanGestureRecognizeralloc] initWithTarget:selfaction:@selector(dragView:)];

    [self.scrollViewaddGestureRecognizer:gesture];

3.处理scrollView的手势

#pragma mark 手势识别器回调方法

- (void)dragView:(UIPanGestureRecognizer *)gesture{

   switch (gesture.state) {

        caseUIGestureRecognizerStateBegan:

           _startPoint = [gesture translationInView:gesture.view];

           break;

            

        caseUIGestureRecognizerStateEnded:

           CGPoint endPoint = [gesture translationInView:gesture.view];

           if (_startPoint.x - endPoint.x >40) {

               CGPoint start = self.scrollView.contentOffset;

               CGPoint end = CGPointMake(start.x +100, 0);

                [self.scrollViewsetContentOffset:end animated:YES];

            }

           break;

    }

}