如何在iOS中一个接一个地在表格视图中放置两个标签？

我有两个标签，并试图在桌子视图单元格上显示它们。但不是一个接一个地显示，第二个标签显示在第一个标签上，第一个标签从不显示... 如何在第一个标签后面显示第二个标签？这里是我的代码：如何在iOS中一个接一个地在表格视图中放置两个标签？

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

UITableViewCell *cell; 
UILabel *label=nil , *secondLabel = nil; 

cell = [tv dequeueReusableCellWithIdentifier:@"Cell"]; 
if (cell == nil) 
{ 
    cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"Cell"] autorelease]; 
    //cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"Cell"] autorelease]; 

    label = [[UILabel alloc] initWithFrame:CGRectZero]; 
    [label setLineBreakMode:UILineBreakModeWordWrap]; 
    [label setMinimumFontSize:FONT_SIZE]; 
    [label setNumberOfLines:0]; 
    [label setFont:[UIFont boldSystemFontOfSize:FONT_SIZE]]; 
    [label setTag:1]; 

    //[[label layer] setBorderWidth:2.0f]; 

    [[cell contentView] addSubview:label]; 

    secondLabel = [[UILabel alloc] initWithFrame:CGRectZero]; 
    [secondLabel setLineBreakMode:UILineBreakModeWordWrap]; 
    [secondLabel setMinimumFontSize:FONT_SIZE]; 
    [secondLabel setNumberOfLines:0]; 
    [secondLabel setFont:[UIFont systemFontOfSize:FONT_SIZE]]; 
    [secondLabel setTag:2]; 

    [[cell contentView] addSubview:secondLabel];  
} 


//NSString *text = [items objectAtIndex:[indexPath row]]; 
int storyIndex = [indexPath indexAtPosition: [indexPath length]-1]; 
NSString *text1 = [[stories objectAtIndex: storyIndex] objectForKey: @"title"]; 
NSString *text2 = [[stories objectAtIndex: storyIndex] objectForKey: @"summary"]; 

CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f); 

CGSize size1 = [text1 sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap]; 
CGSize size2 = [text2 sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];  

if (!label) 
    label = (UILabel*)[cell viewWithTag:1]; 
if (!secondLabel) 
    secondLabel = (UILabel*)[cell viewWithTag:2];  

//[label setText:text1]; 
//[secondLabel setText:text2]; 

label.text = text1; 
secondLabel.text = text2; 

//cell.textLabel.text = text1; 
//cell.detailTextLabel.text = text2; 

[label setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size1.height, 44.0f))]; 
[secondLabel setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size2.height, 44.0f))]; 

return cell; }

和：

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { 

int storyIndex = [indexPath indexAtPosition: [indexPath length] - 1]; 
NSString *text1 = [[stories objectAtIndex: storyIndex] objectForKey: @"title"]; 
NSString *text2 = [[stories objectAtIndex: storyIndex] objectForKey: @"summary"];  

CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f); 

CGSize size1 = [text1 sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap]; 
CGSize size2 = [text2 sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];  
CGFloat height = MAX(size1.height + size2.height, 44.0f); 

return height + (CELL_CONTENT_MARGIN * 2);}

来源

2012-06-03 donparalias