根据文本高度设置UITableViewCell高度和单元格的文本标签

时间:2013-07-25 18:29:37

标签: ios uitableview height label uilabel

我已经按照我在stackoverflow上找到的说明来修复以下内容,但没有一个有效。以下是我的代码:

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

static NSString *CellIdentifier = @"DoCCell";
DoCCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[DoCCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Configure the cell...

CGSize constraintSize = CGSizeMake(cell.infoLabel.frame.size.width, MAXFLOAT);
CGSize labelSize = [_content[[indexPath row] * 2] sizeWithFont:[UIFont fontWithName:@"HelveticaNeue-Light" size:12.0f]
                                             constrainedToSize:constraintSize
                                                 lineBreakMode:NSLineBreakByWordWrapping];
CGRect frame = CGRectMake (cell.infoLabel.frame.origin.x, cell.infoLabel.frame.origin.y, labelSize.width, labelSize.height);
[cell.infoLabel setFrame:frame];

cell.infoLabel.lineBreakMode = NSLineBreakByWordWrapping;
cell.infoLabel.numberOfLines = 10;

_font = cell.infoLabel.font;
cell.infoLabel.text = _content[[indexPath row] * 2];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}


- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
CGSize constraintSize = CGSizeMake(280.0f, MAXFLOAT);

CGSize size = [_content[[indexPath row] * 2] sizeWithFont:[UIFont fontWithName:@"HelveticaNeue-Light" size:12.0f]
               constrainedToSize:constraintSize
                   lineBreakMode:NSLineBreakByWordWrapping];
return size.height + 30.0;
}

但是当我运行我的代码时,单元格的高度会被适当地更改,而标签大小却没有。

单元格是自定义单元格,我通过.xib文件添加了标签。我尝试手动拉伸标签,因为它会显示所有文本,因此问题不在标签的包装中。我还测试了cell.infoLabel.frame.size.height,并且高度值DOES随着单元格的高度而变化,只要该值有关,但它不会这样显示。我做错了什么?

2 个答案:

答案 0 :(得分:1)

我认为问题可能是调整UILabel实例中文本的垂直对齐方式。

我认为你应该在cellForRowAtIndexPath中执行以下操作:

cell.infoLabel.text = _content[[indexPath row] * 2];
cell.infoLabel.numberOfLines = 0;
[cell.infoLabel sizeToFit];

有关它的更多详细信息,请参阅以下链接:Vertical Alignment of UILabel Text

希望这有帮助! :)

答案 1 :(得分:0)

在tableView的cellForRowAtIndexPath委托中使用以下代码:

    // getDynamicHeight function calculates height based on text length
    //Dynamically determine height for cell text
    CGFloat calculatedHeight = [self getDynamicHeight:@"Some very long text here"];  

    //Set name label frame based on text height
    cell.infoLabel.frame = CGRectMake(cell.infoLabel.frame.origin.x,cell.infoLabel.frame.origin.y, cell.infoLabel.frame.size.width,calculatedHeight);
    cell.infoLabel.numberOfLines = 5;

    cell.infoLabel.text = @"Some very long text here";

// getDynamicHeight function
//Dynamically determine height for cell based in containing Text 
-(CGFloat) getDynamicHeight : (NSString *) strCellTextName {

UILabel *lblGetDynamicHeight = [[UILabel alloc] init];
lblGetDynamicHeight.lineBreakMode = UILineBreakModeWordWrap;

lblGetDynamicHeight.text = strCellTextName;

CGSize labelStringSize = [lblGetDynamicHeight.text sizeWithFont:lblGetDynamicHeight.font constrainedToSize:CGSizeMake(142, 9999) lineBreakMode:lblGetDynamicHeight.lineBreakMode];

return  labelStringSize.height; }