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我有新的目标C编程,我目前正在尝试开发一个iOS应用程序。我正在将服务器上的注释加载到UITableViewCell
中的UITextView
中。调整UITextView和UITableViewCell的大小
这是用于将数据加载到UITextview中的代码。
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
// set the location to read the sample data
static NSString *CellIdentifier = @"CommentCell";
CommentCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[CommentCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
PostModel *posts;
CommentModel *comments;
if (contentTitle == nil) {
posts = _feed.posts[articleIndexPath.section];
comments = posts.comments[indexPath.section];
}
else {
posts = _feed.posts[searchResult];
comments = posts.comments[indexPath.section];
}
NSString *content = comments.content;
content = [content stringByReplacingOccurrencesOfString:@"<p>" withString:@""];
content = [content stringByReplacingOccurrencesOfString:@"</p>" withString:@""];
cell.usernameLabel.text = comments.name;
[cell.commentTextView setScrollEnabled:YES];
cell.commentTextView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
cell.commentTextView.text = content;
[cell.commentTextView sizeToFit];
[cell.commentTextView setScrollEnabled:NO];
[cell.commentTextView setTextColor:[UIColor whiteColor]];
[cell.usernameLabel setTextColor:[UIColor whiteColor]];
// make the borders of the cell round
[cell.layer setCornerRadius:7.0f];
[cell.layer setMasksToBounds:YES];
cell.contentView.layer.borderColor = [[UIColor colorWithRed:51/255 green:56/255 blue:67/255 alpha:1] CGColor];
//make the borders of the image round
[cell.userImage.layer setMasksToBounds:YES];
[cell.userImage.layer setCornerRadius:7.0f];
return cell;
}
这是我用来调整代码UITableViewCell
和UITextView
- (CGFloat) tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"CommentCell";
CommentCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
PostModel *posts;
CommentModel *comments;
if (contentTitle == nil) {
posts = _feed.posts[articleIndexPath.section];
comments = posts.comments[indexPath.section];
}
else {
posts = _feed.posts[searchResult];
comments = posts.comments[indexPath.section];
};
if (cell.commentTextView.textContainer.size.height >= 40) {
float height = [self heightForTextView:cell.commentTextView containingString:comments.content];
return height;
}
else {
return 79;
}
}
这是我用于检测文本的高度
- (CGFloat)heightForTextView:(UITextView *)textView containingString:(NSString *)string {
float horizontalPadding = 8;
float verticalPadding = 16;
float widthOfTextView = textView.textContainer.size.width - horizontalPadding;
float height = [string sizeWithFont:textView.font constrainedToSize:CGSizeMake(widthOfTextView, 999999.0f) lineBreakMode:NSLineBreakByWordWrapping].height + verticalPadding;
return height;
}
- (CGSize)text: (NSString *)text sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size {
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7")) {
NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:font, NSFontAttributeName, nil];
CGRect frame = [text boundingRectWithSize:size options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading) attributes:attributesDictionary context:nil];
return frame.size;
}
else {
return [text sizeWithFont:font constrainedToSize:size];
}
}
它加载方法很好,当我最初运行它,但当我向下滚动并备份时,UITextView
成为一个垂直的单行列。
任何帮助将不胜感激!
嗨,我改变了'heightForRowAtIndexPath'的高度,同样的问题发生。我试过了,我发现它是'[cell.commentTextView sizeToFit]'是问题.. – user2909432