表视图--->详细信息视图

Question

我想在TableView上找到组织名称，并找到有关DetailView的更多信息。但我不知道哪里有错误，DetailView找不到我的信息。这是didSelectRow代码：

TableView ：

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    switch (section) {
        case 0:
            return 2;
            break;
        case 1:
            return 2;
            break;
        case 2:
            return 2;
            break;
    }
    return 0;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
    NSString *sectionHeader = nil;    if(section == 0) {
        sectionHeader = @"Red Wine";
    }
    if(section == 1) {
        sectionHeader = @"White Wine";
    }
    if(section == 2) {
        sectionHeader = @"Sparkling Wine";
    }
    return sectionHeader;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
        [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
        [cell.textLabel setNumberOfLines:3];
    }
    switch (indexPath.section) {
        case 0: 
            switch (indexPath.row) {
                case 0:
                    cell.textLabel.text = @"Black Wattle Mt Benson Merlot 2008";
                    cell.detailTextLabel.text = @"Mt Benson, South Australia.";
                    break;
                case 1:
                    cell.textLabel.text = @"Two Hands Canny Butcher Barossa Valley Shiraz Grenache Mataro 2009";
                    cell.detailTextLabel.text = @"Barossa Valley, South Australia.";
                    break;
            }
            break;
        case 1: 
            switch (indexPath.row) {
                case 0:
                    cell.textLabel.text = @"Amberton Lizard Sauvignon Blanc Semillon 2011";
                    cell.detailTextLabel.text = @"South Eastern Australia.";
                    break;
                case 1:
                    cell.textLabel.text = @"Vasse Felix Margaret River Chardonnay Margaret River";
                    cell.detailTextLabel.text = @"Western Australia.";
                break;          }
            break;
        case 2: 
            switch (indexPath.row) {
                case 0:
                    cell.textLabel.text = @"Janisson Fils Brut Non Vintage Champagne";
                    cell.detailTextLabel.text = @"Champagne, France.";
                    break;
                case 3:
                    cell.textLabel.text = @"Francois Montand Brut Blanc De Blancs NV";
                    cell.detailTextLabel.text = @"Premium French sparkling vineyard areas.";
                    break;
            }
            break;
    }
    return cell;
}
-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    DetailViewController *ViewController = [[DetailViewController alloc] init];
    ViewController.Wine = [indexPath section];
    [self.navigationController pushViewController:ViewController animated:YES];
}

DetailView ：

- (void)viewDidLoad{    
[super viewDidLoad];
switch (Wine) {
    case 0: 
        switch (Wine) {
            case 0:
                self.navigationItem.title = @"Black Wattle Mt Benson Merlot 2008";
                WineTextView.text = @"Alcohol: 14.5%n"
                "n"
                "Foods: Pan grilled fillet mignon with buttered mushrooms and silky mashed potatoes.n";
                break;
            case 1:
                self.navigationItem.title = @"Two Hands Canny Butcher Barossa Valley Shiraz Grenache Mataro 2009";
                WineTextView.text =  @"Alcohol: 14.2%n"
                "n"
                "Foods: Enjoy with beef stew and winter vegetables.n";
                break;
            default:
                break;
        }
        break;
    case 1: 
        switch (Wine) {
            case 0:
                self.navigationItem.title = @"Amberton Lizard Sauvignon Blanc Semillon 2011";
                WineTextView.text = @"Alcohol: 14.5%n"
                "n"
                "Foods: Pan grilled fillet mignon with buttered mushrooms and silky mashed potatoes.n";
                break;
            case 1:
                self.navigationItem.title = @"Vasse Felix Margaret River Chardonnay Margaret River";
                WineTextView.text = @"Alcohol: 12%n"
                "n"
                "Foods: Enjoy with Chinese roast duck salad.n";
                break;
            default:
                break;
        }
        break;
    case 2: 
        switch (Wine) {
            case 0:
                self.navigationItem.title = @"Janisson Fils Brut Non Vintage Champagne";
                WineTextView.text = @"Alcohol: 12%n"
                "n"
                "Foods: Ideal aperitif style, to accompany canapés and hors doeuvres.n";
                break;
            case 1:
                self.navigationItem.title = @"Francois Montand Brut Blanc De Blancs NV";
                WineTextView.text = @"Alcohol: 12%n"
                "n"
                "Foods: Apéritif, fish, and creamy dishes..n";
                break;
            default:
                break;
        }
    default:
        break;
}

Answer 1

至少您在DetailView中的代码有两个嵌套的 switch 语句，它们打开同一个变量Wine。例如，这导致"两只手可以屠夫巴罗莎山谷"无法访问，因为Wine不能同时是零和一。也许您打算使用两个变量并存储部分和行以用于DetailView。

无论如何，我建议删除数据重复并将所有内容存储在一个地方。例如，如果您将所有葡萄酒信息存储在一个NSArray则可以使用此数组来检索数据，而无需使用大型 case 语句。这也允许以后将固定列表交换为从本地数据库甚至 Web 检索的内容。

例如，如果您创建了自己的类WineInformation其中包含葡萄酒各个方面的属性(名称、酒精含量、推荐的食物(，您只需将所选行的 WineInformation 对象传递给您的DetailView，然后将显示详细信息。这样，您就不必在DetailView中处理索引路径或任何类似内容，只需专注于显示递出的葡萄酒即可。