修改MJRefreshFooterView.m文件中的这个方法

#pragma mark - 状态相关#pragma mark   设置状态- (void)setState:(MJRefreshState)state{    if (_state == state) return;    MJRefreshState oldState = _state;    [super setState:state];        switch (state){                    case MJRefreshStatePulling:{            _statusLabel.text = MJRefreshFooterReleaseToRefresh;                        [UIView animateWithDuration:MJRefreshAnimationDuration animations:^{                _arrowImage.transform = CGAffineTransformIdentity;                UIEdgeInsets inset = _scrollView.contentInset;                inset.bottom = _scrollViewInitInset.bottom;                _scrollView.contentInset = inset;            }];            break;        }                    case MJRefreshStateNormal:{            _statusLabel.text = MJRefreshFooterPullToRefresh;                        // 刚刷新完毕            CGFloat animDuration = MJRefreshAnimationDuration;            CGFloat deltaH = [self contentBreakView];            CGPoint tempOffset;                        int currentCount = [self totalDataCountInScrollView];            if (MJRefreshStateRefreshing == oldState && deltaH > 0 && currentCount != _lastRefreshCount) {                                tempOffset = _scrollView.contentOffset;                if (_appDelegate.isA) {//A视图:隐藏FooterView                    tempOffset.y -= 60;                }else if(!_appDelegate.isA){//B视图:上拉之后显示后面的新数据                    tempOffset.y += 60;                }                animDuration = 0;            }                        [UIView animateWithDuration:animDuration animations:^{                _arrowImage.transform = CGAffineTransformMakeRotation(M_PI);                UIEdgeInsets inset = _scrollView.contentInset;                inset.bottom = _scrollViewInitInset.bottom;                _scrollView.contentInset = inset;            }];                        if (animDuration == 0) {                _scrollView.contentOffset = tempOffset;            }            break;        }                    case MJRefreshStateRefreshing:{            // 记录刷新前的数量            _lastRefreshCount = [self totalDataCountInScrollView];                        _statusLabel.text = MJRefreshFooterRefreshing;            _arrowImage.transform = CGAffineTransformMakeRotation(M_PI);            [UIView animateWithDuration:MJRefreshAnimationDuration animations:^{                UIEdgeInsets inset = _scrollView.contentInset;                CGFloat bottom = MJRefreshViewHeight + _scrollViewInitInset.bottom;                CGFloat deltaH = [self contentBreakView];                if (deltaH < 0) { // 如果内容高度小于view的高度                    bottom -= deltaH;                }                inset.bottom = bottom;                _scrollView.contentInset = inset;            }];            break;        }                    default:            break;    }}