NSDictionary 和 UITableView 副标题

Question

我正尝试在 Objective-C 中制作一本 phone 类似书籍的应用程序。我使用 NSDictionary 来填充我的 UITableViewCell。我得到了正确的标题、索引和章节，但是我无法为每个标题获得正确的副标题。每个标题的副标题始终相同。这是我的代码示例：

@interface TableViewController (){

    NSDictionary *sarkilar;
    NSArray *sarkilarSectionTitles;
    NSArray *sarkilarIndexTitles;
    NSArray *subtitles;
}

@end

@implementation TableViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    sarkilar = @{@"A" : @[@"Alayına İsyan"],
                 @"B" : @[@"Bebek"],
                 @"E" : @[@"Elbet Birgün Buluşacağız"],
                 @"Y" : @[@"Yusuf Yusuf"]};

    subtitles = [[NSArray alloc]initWithObjects:@"Seslendiren: Mustafa Sandal",
                          @"Seslendiren: Akın",
                          @"Seslendiren: Ahmet Özhan",
                          @"Seslendiren: Acil Servis",nil];

sarkilarSectionTitles = [[sarkilar allKeys] sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)];
    sarkilarIndexTitles = @[@"A", @"B", @"C", @"D", @"E", @"F", @"G", @"H", @"I", @"J", @"K", @"L", @"M", @"N", @"O", @"P", @"Q", @"R", @"S", @"T", @"U", @"V", @"W", @"X", @"Y", @"Z"];

.
.
.

//and in the cell set up i got this:

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"TableViewCell";
    TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

    NSString *sectionTitle = [sarkilarSectionTitles objectAtIndex:indexPath.section];
    NSArray *sectionSarkilar = [sarkilar objectForKey:sectionTitle];
    NSString *sarki = [sectionSarkilar objectAtIndex:indexPath.row];
    cell.textLabel.text = sarki;
    cell.detailTextLabel.text = [subtitles objectAtIndex:indexPath.row];
    return cell;
}

如有任何帮助，我将不胜感激！

Answer 1

在您的案例中，有 4 个部分："A"、"B"、"E" 和 "Y"。每个部分只有 1 行。所以，我假设你的 cell.detailTextLabel.text = [subtitles objectAtIndex:indexPath.row]; 不断获得 "Seslendiren: Mustafa Sandal" 值？尝试将行更改为 cell.detailTextLabel.text = [subtitles objectAtIndex:indexPath.section]; 以查看问题是否已解决。

编辑：

我会将 sarkilar 字典更改为以下模式：

sarkilar=@{
    @"A": @[@{
        @"title": @"Alayına İsyan",
        @"subtitle": @"Seslendiren: Mustafa Sandal"
    },
    @{
        @"title": @"Title 2",
        @"subtitle": @"Subtitle 2"
    }],
    @"B":.....
    .
    .
    .
    .
};

所以sarkilar里面的每个对象都是一个字典数组，每个字典有title和subtitle。

然后：

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"TableViewCell";
    TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

    NSString *sectionTitle = [sarkilarSectionTitles objectAtIndex:indexPath.section];
    NSArray *sectionSarkilar = [sarkilar objectForKey:sectionTitle];
    NSDictionary *dict = [sectionSarkilar objectAtIndex:indexPath.row];
    NSString *title = [dict objectForKey:@"title"];
    NSString *subtitle = [dict objectForKey:@"subtitle"];
    cell.textLabel.text = title;
    cell.detailTextLabel.text = subtitle;
}

Answer 2

这将不起作用，因为您拥有从 A 到 Z 的密钥，并且您正在通过密钥（A 到 Z）获取 sarkilar 值。

并且您正在通过 indexPath.row

设置字幕

如果你改变你的结构并从单一数据源获取数据会更好。
喜欢，

NSDictionary *mainSource;         
mainSource = @{@"A": @[@{@"title": @"Alayına İsyan", @"subTitle":@"Seslendiren: Mustafa Sandal"}],
                   @"B": @[@{@"title": @"Bebek", @"subTitle":@"Seslendiren: Akın"}],
                   @"E": @[@{@"title": @"Elbet Birgün Buluşacağız", @"subTitle":@"Seslendiren: Ahmet Özhan"}],
                   @"Y": @[@{@"title": @"Yusuf Yusuf", @"subTitle":@"Seslendiren: Acil Servis"}]
                   };

并在 cellForRowAtIndexPath 中更改从源获取数据的方式。

TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

NSString *sectionTitle = [sarkilarSectionTitles objectAtIndex:indexPath.section];
NSArray *currentContact = [mainSource objectForKey:sectionTitle];
NSString *strTitle = [[currentContact objectAtIndex:indexPath.row] objectForKey:@"title"]];
NSString *strSubtitle = [[currentContact objectAtIndex:indexPath.row] objectForKey:@"subTitle"]];

cell.textLabel.text = strTitle;
cell.detailTextLabel.text = strSubtitle;
return cell;

NSDictionary 和 UITableView 副标题

NSDictionary and UITableView subtitle

objective-c

nsdictionary

uitableview

subtitle

ios