根据来自web服务Xamarin表单的数据动态表示标签

Question

我试图渲染一个框架内的信息列表来自数据库的信息有两个部分，即“描述”：“值”，所以列表中的行使I组的描述和值，有些可能没有

那么，谁能帮助我如何根据我从服务中获得的数据将标注添加到网格或堆栈中，因为它有时可能是3，有时可能是5，创建标注和绑定它们将是一项静态工作

Answer 1

如果你可以使用xamarin forms3.5或更高版本，有一个非常干净的答案，BindableLayout。

Xaml文件

<ListView
            x:Name="listView"
            HasUnevenRows="True"
            ItemsSource="{Binding Category}">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <ViewCell>
                        <StackLayout>
                            <Label Text="{Binding Name}" TextColor="Blue" />
                            <StackLayout BindableLayout.ItemsSource="{Binding users}">
                                <BindableLayout.ItemTemplate>
                                    <DataTemplate>
                                        <Label Text="{Binding Name}" />
                                    </DataTemplate>
                                </BindableLayout.ItemTemplate>
                            </StackLayout>
                        </StackLayout>
                    </ViewCell>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>

在我的ViewModel

public class DynamicSwitchViewModel:BaseViewModel
    {
        public DynamicSwitchViewModel(ContentPage view):base(view)
        {
            ObservableCollection<User> users1 = new ObservableCollection<User>();
            users1.Add(new User() { Name = "karan3" });
            users1.Add(new User() { Name = "karan4" });
            users1.Add(new User() { Name = "karan5" });
            ObservableCollection<User> users2 = new ObservableCollection<User>();
            users2.Add(new User() { Name = "karan1" });
            users2.Add(new User() { Name = "karan2" });
            users2.Add(new User() { Name = "karan3" });
            users2.Add(new User() { Name = "karan4" });
            users2.Add(new User() { Name = "karan5" });
            ObservableCollection<User> users3 = new ObservableCollection<User>();
            users3.Add(new User() { Name = "karan1" });
            users3.Add(new User() { Name = "karan2" });
            users3.Add(new User() { Name = "karan3" });
            Category = new ObservableCollection<Category>();
            Category.Add(new Category() { Name = "1",users=users1 });
            Category.Add(new Category() { Name = "2",users=users2 });
            Category.Add(new Category() { Name = "3",users=users3 });


        }
        private ObservableCollection<Category> category;
        public ObservableCollection<Category> Category
        {
            get { return category; }
            set { SetProperty(ref category, value); }
        }

    }
    public class Category
    {
        public  ObservableCollection<User> users { get; set; }
        public string Name { get; set; }
    }
    public class User
    {
        public string Name { get; set; }
    }

​

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