ios - 在 uitableview 中使用多种单元格类型的问题

Question

我将此代码用于 UITableView 中的多种单元格类型

问题是单元格文本不可见。下面给出了 cellForRowAtIndexPath 的代码以及单元类代码:

代码:

static NSString *kCellIdentifier = @"NewsViewControllerTableCell";
static NSString *kCellIdentifier2 = @"SubscribeCell";


if ((indexPath.row==0) && ([[NSUserDefaults standardUserDefaults] boolForKey:@"subscribeButtonOption"]))
{
   SubscribeCell* cell = (SubscribeCell*)[tableView dequeueReusableCellWithIdentifier:kCellIdentifier2];

    if (cell == nil) {
        cell = [[[SubscribeCell alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 35.0) reuseIdentifier:kCellIdentifier2] autorelease];
        cell.contentView.backgroundColor = kColorR53G53B53;
        cell.subscribeLabel.font = kLucidaSansStdFontBold_14;
        cell.subscribeLabel.textColor = [UIColor whiteColor];
    }

    cell.subscribeLabel.textColor=[UIColor redColor];
   cell.subscribeLabel.text = @"+ SUBSCRIBE TO NEWSLETTER";


   cell.selectedBackgroundView = [[[UIView alloc] initWithFrame:CGRectZero] autorelease];
   cell.selectedBackgroundView.backgroundColor =kColorR53G53B53;


   [cell setNeedsDisplay];
    return cell;           
}

else
{
   //another cell
 }

=========

标题:

#import <UIKit/UIKit.h>

@interface SubscribeCell : UITableViewCell{
    UILabel *subscribeLabel;
}

@property(nonatomic, retain) UILabel *subscribeLabel;

 @end

和实现类:

#import "SubscribeCell.h"

@implementation SubscribeCell
@synthesize subscribeLabel;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization

        subscribeLabel=[[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 323.0, 40.0)];
        subscribeLabel.textColor=[UIColor whiteColor];
        self.backgroundColor=kColorR53G53B53;

    }
    return self;
}

Answer 1

检查 subscribeLabel 是否为 nil。您正在 initWithNibName:bundle: 中创建它，但正在使用 initWithFrame:reuseIdentifier: 进行初始化，因此它没有到达您的标签创建代码。