objective-c - 用图片objective-C自定义UITableViewCell

Question

我想有自定义单元格UITableView，我UIView通过情节提要创建我的，并将它们链接到代码

不知道为什么我的图片没有出现

请检查我的代码好吗？

自定义代码.h

: UITableViewCell

@property (strong, nonatomic) IBOutlet UIImageView *weekImg;



@end

自定义代码.m

@synthesize weekImg;

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
    // Initialization code
    weekImg=[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"red.png"]];

}
return self;
}

我的方法：cellForRowAtIndexPath:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

 WeekTableViewCell *cell = (WeekTableViewCell*)[tableView dequeueReusableCellWithIdentifier:@"WeekTableViewCell"];



NSString *key = [[self sectionKeys] objectAtIndex:[indexPath section]];
NSArray *contents = [[self sectionContents] objectForKey:key];
NSString *contentForThisRow = [contents objectAtIndex:[indexPath row]];

[[cell textLabel] setText:contentForThisRow];

  return cell;
 }

Answer 1

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    cell.imageView.layer.cornerRadius=10.0f;
    [cell.imageView.layer setMasksToBounds:YES];
    cell.textLabel.text=[NSMUtableArray objectAtIndex:indexPath.row];
switch (indexPath.row)
        {
            case 0:
                cell.imageView.image=[UIImage imageNamed:@"img1.png"];
                break;
            case 1:
                cell.imageView.image=[UIImage imageNamed:@"img2.png"];
                break;
            case 2:
                cell.imageView.image=[UIImage imageNamed:@"img3.png"];
                break;
            case 3:
                cell.imageView.image=[UIImage imageNamed:@"img4.png"];
                break;
            default:
                break;
        }
}




    cell.imageView.layer.cornerRadius=10.0f;
    [cell.imageView.layer setMasksToBounds:YES];, it is used by QuartzCore.

像这样输出单元格，我们可以调整图像大小。

Answer 2

我认为这是因为您的代码只是在寻找先前创建的单元格。开始时不会创建任何单元格，也无法以这种方式检索任何单元格。

WeekTableViewCell *cell = (WeekTableViewCell*)[tableView dequeueReusableCellWithIdentifier:@"WeekTableViewCell"];


if (cell == nil){
        NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"WeekTableViewCell" owner:nil options:nil];
        for(id currentObject in topLevelObjects)
        {
            if([currentObject isKindOfClass:[WeekTableViewCell class]])
            {
                cell = (WeekTableViewCell *)currentObject;

                break;
            }
        }
    }
 cell.selectionStyle = UITableViewCellSelectionStyleNone;
NSString *key = [[self sectionKeys] objectAtIndex:[indexPath section]];
NSArray *contents = [[self sectionContents] objectForKey:key];
NSString *contentForThisRow = [contents objectAtIndex:[indexPath row]];

[[cell textLabel] setText:contentForThisRow];

return cell;

如果没有可重复使用的单元格，则以这种方式创建一个新单元格