UILabel 无法识别的选择器发送到实例

Question

所以我有一个带有 3 个 UILabel 的自定义 UITableViewCell。他们每个人的文本都设置为label.text = @"something";。但是当我滚动过去（假设单元格 0）然后向上滚动到它时，应用程序会崩溃并显示 -[__NSCFString setText:]: unrecognized selector sent to instance，并且我将文本设置为红色突出显示的行。此外，所有其他单元格（使用相同的可重复使用单元格）都没有填充该标签。在 UITableViewCell 子类中，我使用strong 设置了属性。

带有 UITableView 的类：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
ChampionDetailSpellCell *cell = [tableView dequeueReusableCellWithIdentifier:@"championAbilityCell" forIndexPath:indexPath];
// Performance
cell.layer.rasterizationScale = [[UIScreen mainScreen] scale];
cell.layer.shouldRasterize = YES;

// Design
cell.backgroundColor = [UIColor clearColor];
cell.backgroundView = nil;

// Reset
cell.abilityIcon.image = nil;
cell.abilityNameLabel.text = nil;
cell.abilityCost.text = nil;
cell.abilityRange.text = nil;
cell.abilityDescription.text = nil;

// Content
if (indexPath.row == 0) {
    // Passive

    // Icon
    [DDragon getChampionPassiveIcon:self.championInfo[@"passive"][@"image"][@"full"] :^(NSURL *championPassiveIconURL) {
        [cell.abilityIcon setImageWithURL:championPassiveIconURL];
    }];

    // Name
    cell.abilityNameLabel.text = self.championInfo[@"passive"][@"name"];

    // Tooltip
    cell.abilityDescription.text = self.championInfo[@"passive"][@"sanitizedDescription"];
} else {
    // Ability

    // Image
    [DDragon getChampionAbilityIcon:self.championInfo[@"spells"][indexPath.row - 1][@"image"][@"full"] :^(NSURL *championAbilityIconURL) {
        [cell.abilityIcon setImageWithURL:championAbilityIconURL];
    }];

    // Name
    cell.abilityNameLabel = self.championInfo[@"spells"][indexPath.row - 1][@"name"];

    // Cost
    cell.abilityCost.text = [NSString stringWithFormat:@"%@ %@", self.championInfo[@"spells"][indexPath.row - 1][@"costBurn"], self.championInfo[@"spells"][indexPath.row - 1][@"costType"]];

    // Range
    cell.abilityRange.text = self.championInfo[@"spells"][indexPath.row - 1][@"rangeBurn"];

    // Tooltip
    cell.abilityDescription.text = self.championInfo[@"spells"][indexPath.row - 1][@"sanitizedTooltip"];
}

return cell;
}

UITableViewCell 子类

@interface ChampionDetailSpellCell : UITableViewCell

@property (strong) IBOutlet UIImageView *abilityIcon;
@property (strong) IBOutlet UILabel *abilityNameLabel;
@property (strong) IBOutlet UILabel *abilityCost;
@property (strong) IBOutlet UILabel *abilityRange;

@property (strong) IBOutlet UITextView *abilityDescription;

@end

Answer 1

我看错了：

// 名称

cell.abilityNameLabel = self.championInfo[@"spells"][indexPath.row - 1][@"name"];

我认为应该是：

// Name
cell.abilityNameLabel.text = self.championInfo[@"spells"][indexPath.row - 1][@"name"];