我有一个 UITableView 应该显示新闻。我确实设置了 2 个自定义单元格 -> 一个有没有图像的新闻,另一个有带有图像的新闻。所以细胞需要不同的高度。在情节提要中,我创建了这 2 个单元,它们每个都有一个自定义高度(280 有图像,130 没有)。
出于测试目的,我希望第一个和第三个单元格是新闻单元格 + 图像。这就是我的代码:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSDictionary * news = [postArray objectAtIndex:indexPath.row]; //PostArray is the array with the news
NSDictionary *authorData = [news valueForKey:@"author"];
NSString *postTitle = [self decodedString:[news valueForKey:@"title"]];
//Decode = change html chars
NSString *postExcerpt = [self decodedString:[news valueForKey:@"excerpt"]];
NSString *postComments = [news valueForKey:@"comment_count"];
//NSString *postID = [news valueForKey:@"id"];
NSString *authorFirstName = [self decodedString:[authorData valueForKey:@"first_name"]];
NSString *authorLastName = [self decodedString:[authorData valueForKey:@"last_name"]];
NSString *authorNickName = [self decodedString:[authorData valueForKey:@"nickname"]];
if (indexPath.row == 0 || indexPath.row == 2){
NewsCellImage *cell = (NewsCellImage *)[tableView dequeueReusableCellWithIdentifier:@"NewsCellImage"];
if (cell == nil) {
cell = [[NewsCellImage alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"NewsCellImage"];
}
// Set up the cell
cell.postTitle.text = postTitle;
cell.postExcerpt.text = postExcerpt;
cell.postCommentsCount.text = [NSString stringWithFormat:@"%i",indexPath.row];
//Check if names are empty
if ([authorFirstName length] == 0 && [authorLastName length] == 0){
cell.postMeta.text = [NSString stringWithFormat:@"%@ / %@",authorNickName,[news valueForKey:@"date"]];
} else {
cell.postMeta.text = [NSString stringWithFormat:@"%@ %@ / %@",authorFirstName,authorLastName,[news valueForKey:@"date"]];
}
//Set Image
NSDictionary *imageData = [news valueForKey:@"thumbnail_images"];
NSDictionary *imageDataFull = [imageData valueForKey:@"large"];
NSString *postImage = [imageDataFull valueForKey:@"url"];
[cell.postImage setImageWithURL:[NSURL URLWithString:postImage]
placeholderImage:[UIImage imageNamed:@"menu"]
completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType) {
if (error){
NSLog(@"Error bei Bild laden: %@",postTitle);
}
} usingActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
return cell;
} else {
NewsCell *cell = (NewsCell *)[tableView dequeueReusableCellWithIdentifier:@"NewsCell"];
if (cell == nil) {
cell = [[NewsCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"NewsCell"];
}
// Set up the cell
cell.postTitle.text = postTitle;
cell.postExcerpt.text = postExcerpt;
cell.postCommentsCount.text = [NSString stringWithFormat:@"%@",postComments];
//Check if names are empty
if ([authorFirstName length] == 0 && [authorLastName length] == 0){
cell.postMeta.text = [NSString stringWithFormat:@"%@ / %@",authorNickName,[news valueForKey:@"date"]];
} else {
cell.postMeta.text = [NSString stringWithFormat:@"%@ %@ / %@",authorFirstName,authorLastName,[news valueForKey:@"date"]];
}
return cell;
}
}
代码确实可以正常工作,这就是我在启动应用程序后可以看到的:http: //cl.ly/image/320K1y081T3Z
但是,当我向下滚动到带有图像的下一个单元格时,出现问题: http ://cl.ly/image/2M2O1X3R2T13
所以我的代码有问题,或者我需要添加一些东西——但我不知道该采取哪种方式。
也许它与
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexpath{ }
但我真的不知道。我很感激帮助。泰