ios - 在 UITableView 部分添加小节

Question

搜索了很多，但都是徒劳的。我有一个 NSMutableDictionary 的嵌套 NSMutableArray。我想在 UITableView 的部分中包含部分。以下是我的数组:

    <__NSArrayM 0x7ffe4267efb0>(
{
    "group_title" = "Seller Information";
    "group_values" =     (
                {
            key = "First Name";
            value = test;
        },
                {
            key = "Last Name";
            value = testl;
        }
    );
},
{
    "group_title" = "Buyer Information";
    "group_values" =     (
                {
            key = "First Name";
            value = Demo1;
        },
                {
            key = "Last Name";
            value = Demo;
        }
    );
},
{
    "group_title" = "Transaction Information";
    "group_values" =     (
                {
            key = Status;
            value = Active;
        },
                {
            key = "MLS #";
            value = "15-284";
        },
                {
            key = Address;
            value = "1101 Fargo Ave";
        },
                {
            key = County;
            value = Dickinson;
        },
                {
            key = Zipcode;
            value = 51360;
        },
                {
            key = Contingencies;
            value =             (
                                {
                    key = "General Inspection";
                    value =                     (
                                                {
                            key = "Contingency Verbiage";
                            value = "Inspection Results and balance of this paragraph";
                        }
                    );
                },
                                {
                    key = "New Construction";
                    value =                     (
                                                {
                            key = "Contingency Group";
                            value = "If Required";
                        },
                                                {
                            key = "Days Until Due";
                            value = 5;
                        }
                    );
                }
            );
        }
    );
}
)

如果遍历上面的数组，那么group_title就是我想要的sections的个数。 key,group_values中的'value'是每个部分的行数。

对于键 Contingencies，存在嵌套数据。所以我想显示如下:

Transaction Information // section title
    Contingencies // sub-section title
     General Inspection // sub-sub-section title
       Contingency Verbiage  //value
     New Construction // sub-sub-section title
       Contingency Group  //value
       Days Until Due    //value



  -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return [dictData count];
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    NSMutableArray *arr = [[dictData valueForKey:@"group_values"] objectAtIndex:section];
    NSUInteger numberOfRows = arr.count; // For second level section headers
    for (id row  in arr) {
        if([[row objectForKey:@"value"] isKindOfClass:[NSMutableArray class]]) {
            numberOfRows += [[row valueForKey:@"value"]  count];
        }
    }
    return numberOfRows;
}

我知道我必须仅将小节作为单元格进行操作，但不确定如何操作。

如何访问cellforrowatindexpath中的子部分？

请帮忙。我如何解决和实现这个问题？

Answer 1

您可以使用委托(delegate)方法 indentationLevelForRowAtIndexPath 向单元格添加缩进级别，因此如果您想要显示子部分，则只需返回一个 NSInteger 值，例如 1 ，返回值表示指定行的深度，以显示其在节中的层次位置。

到目前为止的例子返回值应该是

  Contingencies // sub-section title - 1
     General Inspection // sub-sub-section title - 2
       Contingency Verbiage  //value - 3
     New Construction // sub-sub-section title - 2
       Contingency Group  //value - 3
       Days Until Due    //value - 3

添加示例代码。

    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
        //Set the indentation width, so that each indentation level width will increase by it.
        cell.indentationWidth = 5;

        //Show the value from corresponding indexPath
 NSArray *arr = [[dictData valueForKey:@"group_values"] objectAtIndex:indexPath.section];
NSMutableArray *items = [NSMutableArray arrayWithArray:arr];
// For second level section headers
    for (id row  in arr) {
        if([[row objectForKey:@"value"] isKindOfClass:[NSMutableArray class]]) {
            [items addObjectsFromArray:[row valueForKey:@"value"]];
        }
    }
NSDictionary *item = items[indexPath.row]
        cell.textLabel.text = item[@"key"];

        return cell;

    }
    - (NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath {

        //Retrive the right indentation for item at indexPath
 NSArray *arr = [[dictData valueForKey:@"group_values"] objectAtIndex:indexPath.section];
if (indexPath.row < arr.count) {
return 0
}
// For second level section headers
return 1
    }