scrollView中的分页功能及影响

    self.alertBackgroundView = [[UIScrollView alloc] initWithFrame:self.frame];
    self.alertBackgroundView.backgroundColor = [UIColor clearColor];
    [self addSubview:self.alertBackgroundView];
    self.alertBackgroundView.delegate = self;
    self.alertBackgroundView.pagingEnabled = NO;
    self.alertBackgroundView.bounces = NO;
    self.alertBackgroundView.showsHorizontalScrollIndicator = NO;
    self.alertBackgroundView.scrollsToTop = NO;
    self.alertBackgroundView.contentSize = CGSizeMake(self.totalWidth, self.frame.size.height);
```![在这里插入图片描述](https://ucc.alicdn.com/images/user-upload-01/20210520174658992.JPG?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppYTEyMjE2,size_16,color_FFFFFF,t_70)
工具条被滑动到最右边
![在这里插入图片描述](https://ucc.alicdn.com/images/user-upload-01/20210520174725138.JPG?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppYTEyMjE2,size_16,color_FFFFFF,t_70)
点击最右侧按钮文字，被自动左移动
![在这里插入图片描述](https://ucc.alicdn.com/images/user-upload-01/20210520174838409.JPG?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ppYTEyMjE2,size_16,color_FFFFFF,t_70)
重新滑动到最右侧的按钮显示

```cpp
- (void)hitAction:(UIButton *)sender {
    if(self.isSendindRequest)
    {
        return;
    }
    NSUInteger index = sender.tag;
    if(index == self.selectIndex)
    {
        return;
    }
    [self updateBtnWithIndex:index];
    if (self.hitCallback) {
        self.hitCallback(sender.tag);
    }
}