我有一个长标签,这是我的第一个标签,我想将其放入我的手机中。这是我所拥有的,但不起作用。
我有一个带有几个标签的自定义UITabelviewCell。
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
switch (indexPath.row) {
case 0:{
CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
CGSize size = [diningHallTimes[indexPath.row][@"description"] sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:NSLineBreakByWordWrapping];
CGFloat height = MAX(size.height, 44.0f);
return height + (CELL_CONTENT_MARGIN * 2) + 40;
// return myStringSize.height;
break;
}
default:
return 40;
break;
}
}
这是行的单元格
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
DiningInfoTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
CGSize size = [diningHallTimes[indexPath.row][@"description"] sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:NSLineBreakByWordWrapping];
CGFloat height = MAX(size.height, 44.0f);
CGFloat the = height + (CELL_CONTENT_MARGIN * 2);
cell.descriptionLabel.numberOfLines = 0;
[cell.descriptionLabel setFrame:CGRectMake(20, 0, 280, the)];
NSLog(@"%f", the);
cell.descriptionLabel.text = diningHallTimes[indexPath.row][@"description"];
cell.daysLabel.text = diningHallTimes[indexPath.row][@"days"];
cell.timeLabel.text = diningHallTimes[indexPath.row][@"time"];
return cell;
}
但这就是我的细胞的样子
不知道为什么会这样,我正在运行iOS8,但我需要它同时适用于is和7。
我在这里先向您的帮助表示感谢。
您需要计算boundingRectWithSize:
标签文本。还需要计算更新内容所需的行数。请尝试以下方法计算标签的新帧。
- (UILabel *) updateLabelFrame:(UILabel *)label {
CGRect lblRect = label.frame;
CGSize maxSize = CGSizeMake(label.frame.size.width, MAXFLOAT);
CGRect labelRect = [label.text boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:label.font} context:nil];
CGFloat labelHeight = labelRect.size.height;
// For below line 16 is default height (The height before content is set). Change this value
// as per your requirement
int lines = labelHeight / 16; // Here 16 is a fix height (default height) for label.
[label setNumberOfLines:lines];
lblRect.size.height = labelHeight;
[label setFrame:lblRect];
return label;
}
编辑:
您可以在任何需要的地方放置此方法。像某些基类或在相同的视图控制器中。在这里,我修改了上述方法,该方法将返回带有动态框架的标签。
对于您的情况,您需要将此方法放置在视图控制器类中。在-cellForRowAtIndexPath
为标签更新内容之后,再调用此方法。参见下面的代码:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
DiningInfoTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
CGSize size = [diningHallTimes[indexPath.row][@"description"] sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:NSLineBreakByWordWrapping];
CGFloat height = MAX(size.height, 44.0f);
CGFloat the = height + (CELL_CONTENT_MARGIN * 2);
cell.descriptionLabel.numberOfLines = 0;
[cell.descriptionLabel setFrame:CGRectMake(20, 0, 280, the)];
NSLog(@"%f", the);
cell.descriptionLabel.text = diningHallTimes[indexPath.row][@"description"];
cell.daysLabel.text = diningHallTimes[indexPath.row][@"days"];
cell.timeLabel.text = diningHallTimes[indexPath.row][@"time"];
// Update descriptionLabel height.
cell.descriptionLabel = [self updateLabelFrame:cell.descriptionLabel];
return cell;
}
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我来说两句