ios - Xamarin Monotouch CustomCell 为空白
<p><p>我有以下 CustomCell:</p>
<pre><code>using System;
using System.Drawing;
using MonoTouch.Foundation;
using MonoTouch.UIKit;
namespace Zurfers.Mobile.iOS
{
public class CustomCell : UITableViewCell
{
UILabel headingLabel, subheadingLabel, priceLabel;
UIImageView imageService;
UIImageView star, star2, star3, star4, star5;
public CustomCell (NSString cellId) : base (UITableViewCellStyle.Default, cellId)
{
imageService = new UIImageView();
star = new UIImageView();
star2= new UIImageView();
star3= new UIImageView();
star4= new UIImageView();
star5= new UIImageView();
headingLabel = new UILabel(){
Font = UIFont.FromName("Cochin-BoldItalic", 22f),
TextColor = UIColor.FromRGB (127, 51, 0),
};
subheadingLabel = new UILabel(){
Font = UIFont.FromName("Cochin-BoldItalic", 22f),
TextColor = UIColor.FromRGB (127, 51, 0),
};
priceLabel = new UILabel(){
Font = UIFont.FromName("Cochin-BoldItalic", 22f),
TextColor = UIColor.FromRGB (127, 51, 0),
};
}
public void UpdateCell (string title, string subtitle, string price, UIImage image)
{
imageService.Image = image;
headingLabel.Text = title;
subheadingLabel.Text = subtitle;
priceLabel.Text = price;
}
public override void LayoutSubviews ()
{
base.LayoutSubviews ();
imageService.Frame = new RectangleF(63, 5, 33, 33);
headingLabel.Frame = new RectangleF(5, 4, 63, 25);
subheadingLabel.Frame = new RectangleF(100, 18, 100, 20);
priceLabel.Frame = new RectangleF(250, 18, 100, 20);
}
}
}
</code></pre>
<p>这是我的 TableSource:</p>
<pre><code>using System;
using MonoTouch.Foundation;
using MonoTouch.UIKit;
namespace Zurfers.Mobile.iOS
{
public class HotelTableSource : UITableViewSource
{
string[] tableItems;
NSString cellIdentifier = new NSString("TableCell");
public HotelTableSource (string[] items)
{
tableItems = items;
}
public override int RowsInSection (UITableView tableview, int section)
{
return tableItems.Length;
}
public override void RowSelected (UITableView tableView, NSIndexPath indexPath)
{
new UIAlertView("Row Selected", tableItems, null, "OK", null).Show();
tableView.DeselectRow (indexPath, true); // normal iOS behaviour is to remove the blue highlight
}
public override UITableViewCell GetCell (UITableView tableView, MonoTouch.Foundation.NSIndexPath indexPath)
{
CustomCell cell = tableView.DequeueReusableCell(cellIdentifier) as CustomCell;
if (cell == null)
cell = new CustomCell(cellIdentifier);
cell.UpdateCell(tableItems, tableItems, tableItems,
UIImage.FromFile (tableItems) );
return cell;
}
}
}
</code></pre>
<p>但是当我运行应用程序时,TableView 是空的。在我创建 TableView 之前,每个 CustomCell 都有一个值。</p>
<p>我做错了什么?</p>
<p>提前感谢您的帮助。</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>Cell 不仅应该包含控件,还应该放在它上面(或者它的 <code>ContentView</code> 上)。为您添加到自定义单元格的任何控件调用 <code>AddSubview</code>:</p>
<pre class="lang-cs prettyprint-override"><code>ImageService = new UIImageView();
AddSubview(ImageService);
</code></pre>
<hr/>
<p>如果不起作用,请尝试使用 <code>UITableViewCell</code> 的默认控件(<code>TextLabel</code>、<code>DetailTextLabel</code>、<code>ImageView</code>) 来显示一些数据。如果出现数据,则您的自定义 <code>UITableViewCell</code> 中仍有问题(错误的帧,空文本),如果没有,则问题出在 <code>UITableViewSource</code> 中(空数据)。</p ></p>
<p style="font-size: 20px;">关于ios - Xamarin Monotouch CustomCell 为空白,我们在Stack Overflow上找到一个类似的问题:
<a href="https://stackoverflow.com/questions/17457598/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/17457598/
</a>
</p>
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