【发布时间】：2014-11-05 21:33:37
【问题描述】：
我有一个布局问题，我有一个包含 UIImageView 和其他三个 UILabel 的 UIView。需要动态设置布局的部分是添加到单元格的主 UIView 和一个包含任意长度文本的 UILabel 让我们说这个例子。
我做了什么，我创建了一个自定义 UITableViewCell 并将 SubViews 添加到自定义 UITableViewCell，如下所示：
-(void)setupView:(PostInfo*)postInfo{
CGRect screenRect = [[UIScreen mainScreen] bounds];
viewPostMessage = [[UIView alloc] initWithFrame:CGRectMake(10, 10, screenRect.size.width - 20, 100)];
viewPostMessage.backgroundColor = [UIColor colorWithRed:193.0f/255 green:193.0f/255 blue:193.0f/255 alpha:1.0f];
viewPostMessage.layer.borderColor = [UIColor blackColor].CGColor;
viewPostMessage.layer.borderWidth = 0.5f;
if(postInfo.userImage.length > 0){
userImage = [[UIImageView alloc] initWithFrame:CGRectMake(10, 10, 30, 30)];
UIImage *imageUser = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString: [NSString stringWithFormat:@"http://www.hugt.co.uk/userimage/%d/userImage.jpg", postInfo.userId]]]];
userImage.image = imageUser;
[viewPostMessage addSubview:userImage];
}else{
UIView *viewImage = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 30, 30)];
viewImage.backgroundColor = [UIColor colorWithRed:132.0f/255 green:132.0f/255 blue:132.0f/255 alpha:1.0f];
[viewPostMessage addSubview:viewImage];
userImage = [[UIImageView alloc] initWithFrame:CGRectMake(5, 5, 20, 20)];
UIImage *imageUser = [UIImage imageNamed:@"defaultuser.jpg"];
userImage.image = imageUser;
[viewImage addSubview:userImage];
}
labelUserName = [[UILabel alloc] initWithFrame:CGRectMake(50, 8, 200, 16)];
labelUserName.textColor = [UIColor colorWithRed:56.0f/255 green:56.0f/255 blue:57.0f/255 alpha:1.0f];
labelUserName.text = [NSString stringWithFormat:@"%@ %@ posted...", postInfo.firstName,postInfo.lastName];
//labelFirstName.textAlignment = NSTextAlignmentCenter;
labelUserName.font = [UIFont fontWithName:@"Helvetica" size:12];
labelUserName.userInteractionEnabled = YES;
[viewPostMessage addSubview:labelUserName];
labelCreated = [[UILabel alloc] initWithFrame:CGRectMake(50, 24, 200, 16)];
labelCreated.textColor = [UIColor colorWithRed:86.0f/255 green:152.0f/255 blue:179.0f/255 alpha:1.0f];
labelCreated.text = [NSDateFormatter localizedStringFromDate:postInfo.timeStampCreated dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle];
labelCreated.text = [labelCreated.text stringByReplacingOccurrencesOfString:@"AM" withString:@""];
labelCreated.text = [labelCreated.text stringByReplacingOccurrencesOfString:@"PM" withString:@""];
//labelFirstName.textAlignment = NSTextAlignmentCenter;
labelCreated.font = [UIFont fontWithName:@"Helvetica" size:12];
labelCreated.userInteractionEnabled = YES;
[viewPostMessage addSubview:labelCreated];
labelMessage = [[UILabel alloc] initWithFrame:CGRectMake(50, 43, 210, 50)];
labelMessage.textColor = [UIColor colorWithRed:141.0f/255 green:142.0f/255 blue:142.0f/255 alpha:1.0f];
labelMessage.text = postInfo.message;
labelMessage.numberOfLines = 3;
//labelFirstName.textAlignment = NSTextAlignmentCenter;
labelMessage.font = [UIFont fontWithName:@"Helvetica" size:12];
labelMessage.userInteractionEnabled = YES;
[labelMessage sizeToFit];
[viewPostMessage addSubview:labelMessage];
[self.contentView addSubview:viewPostMessage];
}
当我创建这个自定义 UITableViewCell 时，我传入一个对象，该对象设置 UILabel 上的文本，如下所示：
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = @"cell";
if(tableViewThreads == tableView){
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];
}
ThreadInfo *threadInfo = (ThreadInfo*)[self.threadsArray objectAtIndex:indexPath.row];
[cell.contentView addSubview:[self setupThreadItem:threadInfo]];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
}
if(tableViewPosts == tableView){
PostTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil)
{
cell = [[PostTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];
}
PostInfo *postInfo = (PostInfo*)[self.postsArray objectAtIndex:indexPath.row];
[cell setupView:postInfo];
//[cell addSubview:[self setupPostItem:postInfo]];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
//[cell.contentView addSubview:[self setupThreadItem:threadInfo]];
}
return nil;
}
我已经搜索了网络和这里以了解如何在单元格中自动布局子视图，但似乎无法理解下一步需要做什么。我读到你需要一个原型单元，所以我创建了一个自定义 UITableViewCell，这就是我已经走了多远。
任何帮助将不胜感激，谢谢。
【问题讨论】：
标签： ios objective-c