UItableview 折叠功能实现 与uitableview嵌

本月主要就是UI处理相对复杂.平常业务没实现过.所以实现后做如下总结.

UItableview 折叠功能实现

1. 属性

@property (assign, nonatomic) BOOL isFolding;
@property (nonatomic, strong) NSMutableArray<KeColumnCourse *> * mFoldDataArray;

@interface KeColumnCourse : MBAModel
@property (nonatomic, strong) NSString * date;
@property (nonatomic, strong) NSString * id;
@property (nonatomic, strong) NSString * picture;
@property (nonatomic, strong) NSString * time;
@property (nonatomic, strong) NSString * title;
@property (nonatomic, strong) NSString * type; //0:显示时间 1:可试听 2: 未开始   myAdd 10:锁

@property (nonatomic, strong) NSMutableArray<KeCourseDetailMaterial*> * material_list;
@property (assign, nonatomic) BOOL isOpened;
@end

2. 折叠的按钮是放在tableview Section头部.头部有点击回调事件

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
    KeColumnCourse *groupModel = self.mFoldDataArray[section];
    KePlayTitleSectionView *view = [KePlayTitleSectionView initFromNIB];
    view.tag = section;
    view.bean = groupModel;
    view.clickFlodStatu = ^(NSInteger tag) {
        KeColumnCourse *groupModel = self.mFoldDataArray[tag];
        groupModel.isOpened = !groupModel.isOpened;
        if (groupModel.material_list.count > 0) {
            [self reloadSection:tag withRowAnimation:UITableViewRowAnimationAutomatic];
            if (groupModel.isOpened) {
                self.isFolding = true;
                self.mFoldPoint = self.contentOffset;
            }
        }        
    };
    return view;
}

3. tableview 的代理回调

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return self.mFoldDataArray.count;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    KeColumnCourse *groupModel = self.mFoldDataArray[section];
    NSInteger count = groupModel.isOpened?groupModel.material_list.count:0;
    return count;
}

Uitableview嵌套了内uitableview

1. 内uitableview操作

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    NSLog(@"-----%f",scrollView.contentOffset.y);
    if(self.mParentView.canScroll){
        scrollView.contentOffset = CGPointZero;
    }
    if (scrollView.contentOffset.y <= 0) { //自己全部显示状态
        self.mParentView.canScroll = YES;
        scrollView.contentOffset = CGPointZero;
    }else{
        self.mParentView.canScroll = NO;
    }
}

2. 主uitableview

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return YES;
}

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    //x
    if (fabs(scrollView.contentSize.width - self.scrollView.size.width ) >= 0.001)
    {
        self.canScroll = NO;
    }
    else
    {
        if (self.mCategoryArray.count > 0) { //有分类才能控制
            //NSLog(@"上下移动");
            //Y
            if(self.numberOfSections>1){
                CGFloat bottomCellOffset = [self rectForSection:1].origin.y;
                if (scrollView.contentOffset.y >= bottomCellOffset) {
                    scrollView.contentOffset = CGPointMake(0, bottomCellOffset);
                    if (self.canScroll) {
                        self.canScroll = NO;
                    }
                }else{
                    if (!self.canScroll) {//子视图没到顶部
                        scrollView.contentOffset = CGPointMake(0, bottomCellOffset);
                    }
                }
            }            
        }
    }
}

3. 遇到问题及解决的点：
   3.1 scrollerview 水平滑动会有问题：解决要水平判断处理

   if (fabs(scrollView.contentSize.width - self.scrollView.size.width ) >= 0.001)
   {
       self.canScroll = NO;
   }
   

   3.2 当内uitableview数据量不足一屏，上拉scrollViewDidScroll会循环调用，解决：

   -(void)layoutSubviews{
    [super layoutSubviews];
    self.contentInset=UIEdgeInsetsZero;
    }