UILabel 错误释放到 UITableViewCell 中

Question

我有一个像这样的自定义 UITableViewCel：

@synthesize poiNameLabel;
@synthesize poiDistanceLabel;

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    if ((self = [super initWithStyle:style reuseIdentifier:reuseIdentifier])) {
        // Initialization code
        CGRect nlabelframe = CGRectMake(NAMELABEL_X, NAMELABEL_Y, NAMELABEL_WIDTH, NAMELABEL_HEIGHT);
        UILabel *nlabel = [[UILabel alloc] initWithFrame:nlabelframe];
        nlabel.font = [UIFont fontWithName:@"Arial" size:NAMELABEL_FONT];
        nlabel.backgroundColor = [UIColor clearColor];
        nlabel.minimumFontSize = NAMELABEL_FONT_MIN;
        //nlabel.adjustsFontSizeToFitWidth = YES;
        [self addSubview:nlabel];
        self.poiNameLabel = nlabel;
        [nlabel release];

        CGRect dlabelframe = CGRectMake(DISTANCELABEL_X, DISTANCELABEL_Y, DISTANCELABEL_WIDTH, DISTANCELABEL_HEIGHT);
        UILabel *dlabel = [[UILabel alloc] initWithFrame:dlabelframe];
        dlabel.font = [UIFont fontWithName:@"Arial" size:DISTANCELABEL_FONT];
        dlabel.backgroundColor = [UIColor clearColor];
        dlabel.minimumFontSize = DISTANCELABEL_FONT_MIN;
        dlabel.adjustsFontSizeToFitWidth = YES;
        [self addSubview:dlabel];
        self.poiDistanceLabel = dlabel;
        [dlabel release];

        self.contentView.backgroundColor = [UIColor clearColor];
        self.contentView.opaque = NO;

    }
    return self;
}


- (void)setSelected:(BOOL)selected animated:(BOOL)animated {

    [super setSelected:selected animated:animated];

}

- (void)dealloc {
    [super dealloc];
    [poiNameLabel release];
    [poiDistanceLabel release];
}

这就是我填充它的方式：

NSDictionary *dic = [[NSDictionary alloc] initWithDictionary:[poisSource objectAtIndex:row]];
ResultsViewCell *cell = [[[ResultsViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
cell.poiNameLabel.text = [dic objectForKey:@"name"];
float distance = [[dic objectForKey:@"distance"] floatValue];
NSString *distanceWithUnity;
distance = distance*1000;
if (distance > 1000) {
    distanceWithUnity = [NSString stringWithFormat:@"%.2f km", distance/1000];
} else {
    distanceWithUnity = [NSString stringWithFormat:@"%.0f mt", distance];
}
cell.poiDistanceLabel.text = distanceWithUnity;
[dic release];
return cell;

一切都很好，但是当 UITableCell 被释放时，我得到 BAD_ACCESS 释放 poiDistanceLabel。
我发现我的代码没有问题，没有保留错误，所以我无法理解发生了什么。
我唯一的疑问是如何设置标签文本：这会是问题吗？为什么会发生这种情况？

Answer 1

问题似乎出在您的 dealloc 方法中：

[super dealloc]

应该是您的 dealloc 方法中的最后一个调用，以在释放对象时保持对象“活动”。