Question

我正在尝试实现可扩展的表格视图单元格。像标题和子标题视图一样。在选择单元格时，它会使用正在解析的json数据扩展几个单元格。要填充的数据是从JSON对象接收的。任何人都能帮助我吗？

Answer 1

您可以使用uitableview方法

[UITableview beginUpdates];

// delete the row in table view 

 [UITableview deleteRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:1 inSection:lastcount - 1]] withRowAnimation:UITableViewRowAnimationTop];

// insert section in table Or Set as per your need

[UITableview insertSections:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(Array.count - [[results objectForKey:@"data"] count], [[results objectForKey:@"data"] count])] withRowAnimation:UITableViewRowAnimationFade];

[UITableview endUpdates];

希望它对你有用。

Answer 2

将您的类别创建为部分标题，将子类别创建为特定部分的行。使用此UITableView委托方法：

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    // calculate section count == number of categories

    return sectionCount;
}

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
    // create section header for section...
    // add a button so you can monitor if user tapped on section and
    // set button's tag = section
    // configure section view
    return vwSectionHeader;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // if section not tapped than numberOfSubcategoriesForASection = 0
    // else 
    // calcualate numberOfSubcategoriesForASection

    return numberOfSubcategoriesForASection;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    // dequeue your cell that corespondes to the subcategory
    // configure cell
    return cell;
}

-(void)BtnSectionPressed:(id)sender{
    // update data source subcategories for selected section
    // section == [sender tag]
    // [reload table]
    // or nicer solution
    [UITableview beginUpdates];
    // colapse previous section
    // call with array of subcategories index paths for section last expanded
    - (void)deleteRowsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation;
    // expand new section
    // call with array of subcategories index paths for section you want to expand
    - (void)insertRowsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation
    [UITableview endUpdates];
}

动态扩展的表视图

2 个答案: