如何创建一个可变大小的UITableViewCell？ [英] How can I create a variable sized UITableViewCell?

问题描述

我似乎无法获取文本实际上跨越多行。高度看起来正确。

   - （UITableViewCell *）tableView：（UITableView *）tableView cellForRowAtIndexPath：（NSIndexPath *）indexPath {
 
 UITableViewCell * cell = [[[UITableViewCell alloc] initWithFrame：CGRectZero reuseIdentifier：@StatusCell] autorelease]; 
 
 CGRect frame = cell.contentView.bounds; 
 UILabel * myLabel = [[UILabel alloc] initWithFrame：frame]; 
 myLabel.text = [[person.updates objectAtIndex：indexPath.row] valueForKey：@text]; 
 [cell.contentView addSubview：myLabel]; 
 
 [myLabel release]; 
 
 return cell; 
} 
 
  - （CGFloat）tableView：（UITableView *）tableView heightForRowAtIndexPath：（NSIndexPath *）indexPath {
 
 NSString * text = [[person.updates objectAtIndex ：indexPath.row] valueForKey：@text]; 
 UIFont * font = [UIFont systemFontOfSize：[UIFont systemFontSize]]; 
 CGSize withinSize = CGSizeMake（tableView.frame.size.width，1000）; 
 CGSize size = [text sizeWithFont：font constrainedToSize：withinSize lineBreakMode：UILineBreakModeWordWrap]; 
 
 return size.height + 20; 
} 
  

此外，我缺少的是使标签比表格单元格？

解决方案

Tweetero 在）。

基本实施纲要：

1. 当构建 UITableViewCell 时，创建并添加 UILabel code> tableviewCellWithReuseIdentifier：。在丰富 UITableViewCell 时，查找 TEXT_TAG 标签的创建

   / code>与视图，请确保您正确地格式化标签，如 configureCell：forIndexPath 中所做，类似地查找标签标签 TEXT_TAG




2. 返回每个单元格的适当高度，如 tableView：heightForRowAtIndexPath 。




I can't seem to get the text to actually span multiple lines. The heights look correct. What am I missing?

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

    UITableViewCell *cell =  [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"StatusCell"] autorelease];

    CGRect frame = cell.contentView.bounds;
    UILabel *myLabel = [[UILabel alloc] initWithFrame:frame];
    myLabel.text = [[person.updates objectAtIndex:indexPath.row] valueForKey:@"text"];
    [cell.contentView addSubview:myLabel];

    [myLabel release];

    return cell;
}

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

    NSString *text = [[person.updates objectAtIndex:indexPath.row] valueForKey:@"text"];
    UIFont *font = [UIFont systemFontOfSize:[UIFont systemFontSize]];
    CGSize withinSize = CGSizeMake(tableView.frame.size.width, 1000);
    CGSize size = [text sizeWithFont:font constrainedToSize:withinSize lineBreakMode:UILineBreakModeWordWrap];

    return size.height + 20;    
}

Also, what am I missing that makes the labels appear longer than the table cell?

解决方案

Tweetero provides an example of this in MessageListController.m. The code there renders the following screen:

(Pic is taken from Mashable).

The basic implementation outline:

1. When constructing a UITableViewCell, create and add a UILabel as a subview in the manner shown in tableviewCellWithReuseIdentifier:. Look for the creation of TEXT_TAG label.

2. when enriching the UITableViewCell with views, ensure that you format label properly, as is done in configureCell:forIndexPath, similarly look for the label tag TEXT_TAG.

3. Return the appropriate height for each cell, as is done in tableView:heightForRowAtIndexPath.

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