我想插入一个syncfusion linearlayout listview,但由于某种原因它不显示任何项目/数据,并且我没有在同一时间收到任何错误,我尝试更改绑定语法和一些事情,但我似乎无法做到。Syncfusion Xamarin Listview不显示任何项目
这是我的XAML:
<syncfusion:SfListView x:Name="listView"
ItemTemplate="{Binding Source={local2:BandInfoRepository}, Path=BandInfo, Mode=TwoWay}"
ItemSize="100"
AbsoluteLayout.LayoutBounds="1,1,1,1"
AbsoluteLayout.LayoutFlags="All" >
<syncfusion:SfListView.ItemTemplate>
<DataTemplate>
<Grid RowSpacing="0" Padding="0,12,8,0" ColumnSpacing="0" Margin="0">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="1" />
</Grid.RowDefinitions>
<Grid RowSpacing="0" Padding="8,0,8,10">
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Image Source="{Binding Path=BandImage}"
Grid.Column="0"
Grid.Row="0"
HeightRequest="80"
WidthRequest="70"
HorizontalOptions="Start"
VerticalOptions="Start"
/>
<StackLayout Orientation="Vertical"
Padding="5,-5,0,0"
VerticalOptions="Start"
Grid.Row="0"
Grid.Column="1">
<Label Text="{Binding Path=BandName}"
FontAttributes="Bold"
FontSize="16"
BackgroundColor="Green"
TextColor="#000000" />
<Label Text="{Binding Path=BandDescription}"
Opacity="0.54"
BackgroundColor="Olive"
TextColor="#000000"
FontSize="13" />
</StackLayout>
</Grid>
<BoxView Grid.Row="1"
HeightRequest="1"
Opacity="0.75"
BackgroundColor="#CECECE" />
</Grid>
</DataTemplate>
</syncfusion:SfListView.ItemTemplate>
</syncfusion:SfListView>
而这正是我从获取数据的类:
public class BandInfo : INotifyPropertyChanged
{
private string bandName;
private string bandDesc;
private ImageSource _bandImage;
public string BandName
{
get { return bandName; }
set
{
bandName = value;
OnPropertyChanged("BandName");
}
}
public string BandDescription
{
get { return bandDesc; }
set
{
bandDesc = value;
OnPropertyChanged("BandDescription");
}
}
public ImageSource BandImage
{
get { return _bandImage; }
set
{
_bandImage = value;
OnPropertyChanged("BandImage");
}
}
public event PropertyChangedEventHandler PropertyChanged;
public void OnPropertyChanged(string name)
{
if (this.PropertyChanged != null)
this.PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
和公正的情况下,这是我如何填补收藏(BandInfoRepository.cs):
public class BandInfoRepository
{
private ObservableCollection<BandInfo> bandInfo;
public ObservableCollection<BandInfo> BandInfo
{
get { return bandInfo; }
set { this.bandInfo = value; }
}
public BandInfoRepository()
{
GenerateBookInfo();
}
internal void GenerateBookInfo()
{
string[] BandNames = new string[] {
"Nirvana",
"Metallica",
"Frank Sinatra"
};
string[] BandDescriptions = new string[] {
"Description",
"Description",
"Description"
};
bandInfo = new ObservableCollection<BandInfo>();
for (int i = 0; i < BandNames.Count(); i++)
{
var band = new BandInfo()
{
BandName = BandNames[i],
BandDescription = BandDescriptions[i],
BandImage = ImageSource.FromResource("Lim.Images.Image" + i + ".png")
};
bandInfo.Add(band);
}
}
}
我希望你们能帮助我,因为我一直坚持这一段时间。提前致谢。
为什么ItemTemplate绑定到回购? – Jason
@Jason这是一个班级,我只是举了一个例子,并将班级重命名为我的项目的更多“合适”名称。 –
我将添加整个.cs,以便您可以看到它。 –