Question

我创建了一个名为“CustomPreviCell”的自定义单元格（它是NIB的名称和此NIB中单元格的标识符）。我的customCell包含6个标签和一个imageView。与此单元格对应的.m文件如下：

@interface CustomPreviCell : UITableViewCell

@property (weak, nonatomic) IBOutlet UIImageView *iconImageView;
@property (weak, nonatomic) IBOutlet UILabel *weatherLabel;
@property (weak, nonatomic) IBOutlet UILabel *detailOneLabel;
@property (weak, nonatomic) IBOutlet UILabel *detailTwoLabel;
@property (weak, nonatomic) IBOutlet UILabel *dayNumberLabel;
@property (weak, nonatomic) IBOutlet UILabel *dayTextLabel;
@property (weak, nonatomic) IBOutlet UILabel *monthLabel;

@end

并实施：

#import "CustomPreviCell.h"

@implementation CustomPreviCell
@synthesize iconImageView;
@synthesize weatherLabel;
@synthesize detailOneLabel;
@synthesize detailTwoLabel;
@synthesize dayNumberLabel;
@synthesize dayTextLabel;
@synthesize monthLabel;

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        // Initialization code
    }
    return self;
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
    [super setSelected:selected animated:animated];

}


@end

现在，我想在tableView中显示这个单元格（当然！）。所以在我的故事板中，我创建了一个带有一个CustomCell原型的新UITableView，我将视图提到我的类“SinglePreviViewController”，它扩展了“UITableViewController”。我为tableView实现了经典方法（numberOfRowsInSection：etc ...）。

在方法“cellForRowAtIndexPath”中，我想创建，初始化和显示我的自定义单元格，所以我写了：

NSString *simpleTableIdentifier = @"CustomCellPrevi";
CustomPreviCell *cell = (CustomPreviCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"CustomCellPrevi" owner:self options:nil];

for (id currentObject in topLevelObjects){
    if ([currentObject isKindOfClass:[CustomPreviCell class]]){
        cell = (CustomPreviCell *)currentObject;

        NSString * iconName = [self loadIcon:indexPath.row];
        [cell.iconImageView setImage:[UIImage imageNamed:iconName]];
        cell.detailOneLabel.text = [[NSString alloc] initWithFormat:@"%@°C - %@mm",[descriptor.temperature objectAtIndex:indexPath.row], [descriptor.precipitations objectAtIndex:indexPath.row]];
        cell.detailTwoLabel.text = [[NSString alloc] initWithFormat:@"%@ (%@) km/h - %@hPa",[descriptor.vent objectAtIndex:indexPath.row],[descriptor.rafales objectAtIndex:indexPath.row], [descriptor.pression objectAtIndex:indexPath.row]];
        cell.weatherLabel.text = [descriptor.temps objectAtIndex:indexPath.row];
        NSDictionary * date = [self getDateComponentsFromXMLDate:[descriptor.date objectAtIndex:indexPath.row]];

        if([[date valueForKey:@"dayNumber"] intValue] %2 == 0)
            [cell.contentView setBackgroundColor:[UIColor colorWithWhite:1 alpha:0.0]];
        else 
            [cell.contentView setBackgroundColor:[UIColor colorWithWhite:1 alpha:0.15]];


        cell.dayTextLabel.text = [date valueForKey:@"dayText"];
        cell.dayNumberLabel.text = [[NSString alloc] initWithFormat:@"%@ %@",[date valueForKey:@"dayNumber"],[date valueForKey:@"month"]];
        cell.monthLabel.text = [date valueForKey:@"hour"];

    }
}
return cell;

让我们启动我的应用：它工作正常！我的tableView包含我的CustomPreviCells并正确显示内容。但是......当我想从这些单元格中推出一个新的viewController时，它无法工作。我已经将我的customCell（从故事板中的TableView中的单元格）连接到新的viewcontroller（名为DetailPreviViewcontroller），但它什么也没做。我的customCell刚刚被选中。

请帮助：）

编辑1：

    -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    NSLog(@"Hey !");
    if([segue.identifier isEqualToString:@"propertiesSegue"])
    {
        NSLog(@"Hello");
        SingleVillePropertiesViewController * destinationController = [segue destinationViewController];
        [destinationController setVille:ville];
    }
    else if([segue.identifier isEqualToString:@"detailPreviSegue"])
    {
        DetailPreviViewController * destController = [segue destinationViewController];
        [[self navigationController] pushViewController:destController animated:YES];

        //TODO : set previDescriptor to my destController but it's not important 
        //       for this problem.
    }
}

编辑2： 好吧，我还没有解决这个问题，但我通过这样做摆脱它：

1 /为要推送的视图控制器创建新的笔尖（不在故事板中）

2 /将它设置为ViewController的类（在我的案例中为DetailPreviViewController），将FilesOwner视图设置为NIB视图

3 /使用navigationController从方法“didSelectRowAtPath”推送视图。

我不喜欢这种方式继续进行，但它现在是唯一可行的......

Answer 1

确保已连接故事板中的单元格，而不是整个视图控制器。这很容易发生。一种方法是首先选择单元格，然后进行拖动。

无需实施didSelectRowAtIndexPath。那会让整个故事板变得毫无用处......

Answer 2

编辑了segues的答案：

尝试实施此

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    NSLog(@"prepareForSegue: %@", segue.identifier);

    if ([segue.identifier isEqualToString:@"A"]) {
        [segue.destinationViewController setValue1:@"something"];
        // Maybe you have to alloc init your view controller also

    } else if ([segue.identifier isEqualToString:@"B"]) {
        [segue.destinationViewController setValue1:@"something else"];
    }
}

从au CustomCell推送ViewController

2 个答案: