具有多线UILabel的自定义Tableview单元需要动态高度 [英] Custom Tableview cell with multiline UILabel needs dynamic height

问题描述

我使用Interface Builder创建了一个自定义TableView单元格。这就是它的样子：

I created a custom TableView cell with Interface Builder. This is what it looks like:

描述标签，我需要自动换行，所以我这样设置：

For the Description Label, I need that to word wrap so I set it as such:

在我的SettingsPageViewController中，我有以下表格视图方法被覆盖：

In my SettingsPageViewController, I have the following Table View methods overridden:

@implementation SBSettingsViewController
{
    NSArray *settingHeaders;
    NSArray *settingDescriptions;
}
- (void)viewDidLoad {
[super viewDidLoad];

[self setupLeftMenuButton];
// Do any additional setup after loading the view from its nib.
settingHeaders = [NSArray arrayWithObjects:@"Label Header 1",@"Label Header 2",nil];
settingDescriptions = [NSArray arrayWithObjects:@"Two line description Two line description Two line description ",@"One Line Description",nil];
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [settingHeaders count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *simpleTableIdentifier = @"SettingsTableCell";

SettingsTableViewCell *cell = (SettingsTableViewCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
    NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"SettingsTableCell" owner:self options:nil];
    cell = [nib objectAtIndex:0];
}

cell.settingsHeaderLabel.text = [settingHeaders objectAtIndex:indexPath.row];
cell.settingsDescriptionLabel.text = [settingDescriptions objectAtIndex:indexPath.row];

cell.settingsDescriptionLabel.lineBreakMode = NSLineBreakByWordWrapping;
cell.settingsDescriptionLabel.numberOfLines = 0;
CGRect appFrame=[[UIScreen mainScreen] bounds];
cell.settingsDescriptionLabel.preferredMaxLayoutWidth = appFrame.size.width - 15;

[cell.settingsDescriptionLabel sizeToFit];
[cell.settingsDescriptionLabel setNeedsDisplay];
[cell layoutIfNeeded];

return cell;
}

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{

if ([tableView respondsToSelector:@selector(setSeparatorInset:)]) {
    [tableView setSeparatorInset:UIEdgeInsetsZero];
}

if ([tableView respondsToSelector:@selector(setLayoutMargins:)]) {
    [tableView setLayoutMargins:UIEdgeInsetsZero];
}

if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
    [cell setLayoutMargins:UIEdgeInsetsZero];
}
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 85;
}

以下是结果页面的样子：

Here is what the resulting page looks like:

如您所见，第一个tableview单元格的描述标签不是自动换行。它只是切断了。 如何进行换行？

As you can see, the description label for the 1st tableview cell does NOT word wrap. It just cuts off. How do I make it wrap?

另外，我想要动态调整Tableview单元格高度。我试图将heightForRowAtIndexPath：改为UITableViewAutomaticDimension，但这让它看起来非常奇怪：

Also, I'd like for the Tableview cell height to be dynamically adjusted. I tried to change the heightForRowAtIndexPath: to be UITableViewAutomaticDimension but that just made it look super weird as such:

如何调整行视图高度，1行说明标签略短？

感谢您的帮助！

推荐答案

将标题标题限制为top，leading，trailing to super view和底部（垂直）到描述标签。
对于描述标签>超前视图的前导，尾随和下边距相同。

give constraint of header label top, leading, trailing to super view and bottom (vertical ) to description Label. same for description label > leading, trailing and bottom margin to super view.

现在设置标题标签高度修复和描述标签make multiline（Lines = 0）

now set Header label height Fix and description label make multiline ( Lines = 0)

在viewDidLoad中设置的表格视图

for table view set in viewDidLoad

_tableView.estimatedRowHeight = 100.0;
_tableView.rowHeight = UITableViewAutomaticDimension;

如果有效，请告诉我......

Let me know if this works...

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