[英]How to use Checked binding with radio button on item selected of the listview cell with Xamarin Forms?
I am using radio button with listview and on listview item click I want to make radio button checked/selected but unfortunately not able to select the radio button. 我正在将单选按钮用于listview,并在listview项上单击,我想使单选按钮处于选中/选中状态,但不幸的是无法选择单选按钮。
<StackLayout VerticalOptions="CenterAndExpand" HeightRequest="200" HorizontalOptions="CenterAndExpand" >
<ListView RowHeight="45" IsVisible="true" ItemsSource="{Binding Items}" BackgroundColor="#5679d1"
SelectedItem="{Binding objItemSelected, Mode=TwoWay}"
HasUnevenRows="true" SeparatorVisibility="Default" SeparatorColor="White">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid>
<Label Text="{Binding Questions}" TextColor="Black" Grid.Column="0"
Grid.Row="0" Grid.ColumnSpan="2" HorizontalOptions="Center">
</Label>
<controls:CustomRadioButton HeightRequest="15" HorizontalOptions="End" Checked="{Binding Radiobtn}" IsVisible="true" Grid.Row="0" Grid.Column="3"/>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
According to your description, I guess that you want to have two event, one is ListView Itemselected, another is RadioButton check event in Listview. 根据您的描述,我想您想拥有两个事件,一个是ListView Itemselected,另一个是Listview中的RadioButton check事件。 I do one sample about this, but I add Button in listview, replace RadioButton, you can take a look: 我对此进行了一个示例,但是我在列表视图中添加了Button,替换了RadioButton,您可以看一下:
<StackLayout>
<ListView ItemsSource="{Binding models}" RowHeight="40" ItemSelected="ListView_ItemSelected">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<StackLayout HorizontalOptions="StartAndExpand" Orientation="Horizontal">
<Label
x:Name="label1"
Text="{Binding Name}"
TextColor="Black" />
<Button x:Name="btn1" Text="{Binding Description}" Clicked="OnButtonClick" />
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
private void ListView_ItemSelected(object sender, SelectedItemChangedEventArgs e)
{
testmodel model = (testmodel)e.SelectedItem;
//Console.WriteLine(model.Name);
DisplayAlert("Alert", model.Name, "OK");
}
private void OnButtonClick(object sender, EventArgs e)
{
Button btn = (Button)sender;
StackLayout listviewiten = (StackLayout)btn.Parent;
Label label = (Label)listviewiten.Children[0];
DisplayAlert("Alert", label.Text, "OK");
//Console.WriteLine(label.Text);
}
You haven't posted the code for objItemSelected, so you may need to mix it with my answer, but to achieve what you want you should have this: 您尚未发布objItemSelected的代码,因此您可能需要将其与我的答案混合使用,但是要实现所需的功能,您应该具有以下内容:
public object objItemSelected
{
get => null;
set
{
if (value == null)
return;
value.Radiobtn = true;
onPropertyChanged(nameof(objItemSelected));
}
}
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