在自定義UITableView單元格中重疊UILabels

Question

我在自定義單元格中重疊標籤有問題。 下面是此細胞init和佈局方法：

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier 
{ 
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]; 

    if (self) 
    { 
     self.img = [[[UIImageView alloc] init] autorelease]; 
     [self.contentView addSubview:self.img]; 

     self.p = [[[UILabel alloc] init] autorelease]; 
     [self.p setTextAlignment:UITextAlignmentCenter]; 
     [self.p setFont:[UIFont fontWithName:@"Helvetica" size:10.0]]; 
     [self.p setLineBreakMode:UILineBreakModeTailTruncation]; 
     [self.p setNumberOfLines:1]; 
     [self.p setTextColor:[UIColor whiteColor]]; 
     [self.p setBackgroundColor:[UIColor redColor]]; 
     [self.p setText:@"PREMIERA"]; 
     [self.contentView addSubview:self.p];   

     self.g = [[[UILabel alloc] init] autorelease]; 
     [self.g setTextAlignment:UITextAlignmentLeft]; 
     [self.g setFont:[UIFont fontWithName:@"Helvetica-Bold" size:12.0]]; 
     [self.g setLineBreakMode:UILineBreakModeTailTruncation]; 
     [self.g setNumberOfLines:1]; 
     [self.contentView addSubview:self.g]; 

     self.t = [[[UILabel alloc] init] autorelease]; 
     [self.t setTextAlignment:UITextAlignmentLeft]; 
     [self.t setFont:[UIFont fontWithName:@"Helvetica-Bold" size:14.0]]; 
     [self.t setMinimumFontSize:12.0f]; 
     [self.t setAdjustsFontSizeToFitWidth:YES]; 
     [self.t setLineBreakMode:UILineBreakModeTailTruncation]; 
     [self.t setNumberOfLines:1]; 
     [self.contentView addSubview:self.t]; 

     self.o = [[[UILabel alloc] init] autorelease]; 
     [self.o setTextAlignment:UITextAlignmentLeft]; 
     [self.o setFont:[UIFont fontWithName:@"Helvetica" size:12.0]]; 
     [self.o setLineBreakMode:UILineBreakModeTailTruncation]; 
     [self.o setNumberOfLines:1]; 
     [self.contentView addSubview:self.o]; 
    } 

    return self; 
} 

- (void)layoutSubviews 
{ 
    [super layoutSubviews]; 

    self.img.frame = CGRectMake(0, 0, 40, 60); 
    self.p.frame = CGRectMake(0, 0, 0, 0); 
    self.g.frame = CGRectMake(0, 0, 0, 0); 
    self.t.frame = CGRectMake(0, 0, 0, 0); 
    self.o.frame = CGRectMake(0, 0, 0, 0); 

    CGSize pSize = CGSizeMake(0, 0); 
    CGSize gSize = CGSizeMake(0, 0); 
    CGSize tSize = [self.t.text sizeWithFont:self.t.font constrainedToSize:CGSizeMake(230, 16) lineBreakMode:self.t.lineBreakMode]; 
    CGSize oSize = [self.o.text sizeWithFont:self.o.font constrainedToSize:CGSizeMake(230, 16) lineBreakMode:self.o.lineBreakMode]; 


    if (self.jestPremiera) 
    { 
     pSize = [self.p.text sizeWithFont:self.p.font constrainedToSize:CGSizeMake(60, 16) lineBreakMode:self.p.lineBreakMode];  
     gSize = [self.g.text sizeWithFont:self.g.font constrainedToSize:CGSizeMake(175, 16) lineBreakMode:self.g.lineBreakMode]; 
     self.p.frame = CGRectMake(50, 5, 60, pSize.height); 
     self.p.hidden = NO; 
     self.g.frame = CGRectMake(115, 5, 175, gSize.height); 
    } 
    else 
    { 
     gSize = [self.g.text sizeWithFont:self.g.font constrainedToSize:CGSizeMake(230, 16) lineBreakMode:self.g.lineBreakMode];    
     self.p.hidden = YES; 
     self.g.frame = CGRectMake(50, 5, 230, gSize.height); 
    } 

    self.t.frame = CGRectMake(50, 5 + gSize.height, 230, tSize.height); 
    self.o.frame = CGRectMake(50, 5 + gSize.height + tSize.height, 230, oSize.height);    
} 

通常這個工作，但有時（僅在3G設備），它看起來像：http://imageshack.us/f/17/tvkino1.jpg/

誰能告訴我是什麼的原因行爲，我能做些什麼？

Answer 1

請嘗試通過使用NSLog（）調試那些標籤的框架來檢查;

Answer 2

我認爲最好的解決方案是，如果您在分配這些標籤時使用標籤編號定義每個標籤。現在，當你需要這些標籤則只是回顧這些標籤是這樣的...

yourlabelname = (UILabel *)[cell.contentView viewWithTag:yourLabelTagNumber]; 

，並在您-(void)viewDidAppear剛剛重裝實現代碼如下;