带有 SearchView 的 UITableView 使新单元格在搜索时与旧单元格重叠

Posted 2023-03-12

【中文标题】带有 SearchView 的 UITableView 使新单元格在搜索时与旧单元格重叠

【英文标题】：UITableView with SearchView makes new cells overlap old ones on search

【发布时间】：2016-06-29 08:56:32

【问题描述】：

我正在实现一个 SearchView 来过滤我的 UITableView 中的数据。我能够成功搜索，唯一的问题是当 UITableView 数据被过滤时，旧单元格仍然存在并且过滤后的单元格与它们重叠，给我一个混乱的输出。我已按照我对 SO 的回答所建议的清除表源，但仍未解决问题。

这是我想要做的：

过滤控制器

void searchFiler_TextChanged(object sender, UISearchBarTextChangedEventArgs e)

    if (!string.IsNullOrEmpty(e.SearchText))
    
        ppTable.Source = null;
        AppDelegate.filteredList = null;

        ppTable.ReloadData();
        filteredModelList = filter(dupes, e.SearchText);
        mAdapter = new PeoplePlacesSource(filteredModelList, "");
        ppTable.Source = mAdapter;
        ppTable.ReloadData();
    
    else
    
        ppTable.Source = null;
        mAdapter = new PeoplePlacesSource(dupes, "");
        searchFiler.TextChanged += searchFiler_TextChanged;
        mAdapter.TableRowSelected += mAdapter_TableRowSelected;
        ppTable.Source = mAdapter;
        ppTable.ReloadData();
    

PeoplePlacesSource

public override UITableViewCell GetCell(UITableView tableView, Foundation.NSIndexPath indexPath)
        


            cell = tableView.DequeueReusableCell("PeoplePlacesCell_Cell") as PeoplePlacesCell ?? PeoplePlacesCell.Create();
subList = userList.ElementAt(indexPath.Row);



            cell.UpdatePeoplePlacesCell(subList);
             return cell;

        

PeoplePlacesCell

 internal void UpdatePeoplePlacesCell(System.Linq.IGrouping<string, Models.EmployeeModel> subList)
    
        var yPosition =15;
        var xPosition = 10;

        var imgDefault = new UIImageView();
        imgDefault.Frame = new CoreGraphics.CGRect(10, viewParent.Frame.Y, 60,60);
        imgDefault.Image = UIImage.FromFile("ic_appicon.png");
        CALayer profileImageCircle = imgDefault.Layer;
        profileImageCircle.CornerRadius = 28;
        profileImageCircle.BorderWidth = 2;
        profileImageCircle.BorderColor = new CoreGraphics.CGColor(211, 34, 41);
        profileImageCircle.MasksToBounds = true;
        imgDefault.ClipsToBounds = true;
        viewParent.AddSubview(imgDefault);


        var labelUserName = new UILabel();
        labelUserName.Frame = new CoreGraphics.CGRect(0, 0, viewContainer.Frame.Width, 30);
        labelUserName.TextColor = UIColor.FromRGB(211, 34, 41);
        labelUserName.Text = subList.Key ;
        labelUserName.ClipsToBounds = true;

        labelUserName.Font = UIFont.BoldSystemFontOfSize(17);
        viewContainer.AddSubview(labelUserName);



        var mList = subList.Take(5);
        foreach (var employeeModel in mList)
        
            var labelPlace = new UILabel();
            labelPlace.Frame = new CoreGraphics.CGRect(0, yPosition, viewContainer.Frame.Width, 50);

            if (employeeModel.Place.Contains(","))
            
                labelPlace.Text = employeeModel.Place.Substring(0, employeeModel.Place.IndexOf(","));
            
            else
            
                labelPlace.Text = employeeModel.Place;
            
            labelPlace.Font = UIFont.FromName(labelPlace.Font.Name, 12f);
            labelUserName.SizeToFit();
                labelPlace.ClipsToBounds = true;
            viewContainer.AddSubview(labelPlace);



           yPosition += 15;




        
    

我该如何解决这个问题？任何帮助表示赞赏

【参考方案1】：

滚动后你有同样的问题吗？您的单元格被重复使用，但我没有看到删除添加的子视图的代码。在重用单元格之前，请尝试删除您添加的所有子视图。