Question

我希望在LongListSelector中使用diff颜色设置SelectItem前景这是我的xaml：

<toolkit:LongListSelector x:Name="locations" Background="Transparent" Margin="0"
                    GroupViewOpened="LongListSelector_GroupViewOpened"
                    GroupViewClosing="LongListSelector_GroupViewClosing" 
                    SelectionChanged="locations_SelectionChanged">
                <toolkit:LongListSelector.GroupItemsPanel>
                    <ItemsPanelTemplate>
                        <toolkit:WrapPanel Orientation="Horizontal"/>
                    </ItemsPanelTemplate>
                </toolkit:LongListSelector.GroupItemsPanel>
                <toolkit:LongListSelector.GroupItemTemplate>
                    <DataTemplate>
                        <Border Background="{Binding Converter={StaticResource GroupBackground}}" 
                                    Width="99" Height="99" Margin="6" IsHitTestVisible="{Binding HasItems}">
                            <TextBlock Text="{Binding Key}" 
                                    FontFamily="{StaticResource PhoneFontFamilySemiBold}"
                                    FontSize="48"
                                    Margin="8,0,0,0"
                                    Foreground="{Binding Converter={StaticResource GroupForeground}}"                                        
                                    VerticalAlignment="Bottom"/>
                            <Border.Projection>
                                <PlaneProjection RotationX="-60"/>
                            </Border.Projection>
                        </Border>
                    </DataTemplate>
                </toolkit:LongListSelector.GroupItemTemplate>
                <toolkit:LongListSelector.GroupHeaderTemplate>
                    <DataTemplate>
                        <Border Background="Transparent" Margin="12,8,0,8">
                            <Border Background="{StaticResource HighlightBrush}"    
                                        Padding="8,0,0,0" Width="62" Height="62"                 
                                        HorizontalAlignment="Left">
                                <TextBlock Text="{Binding Key}" 
                                        Foreground="#FFFFFF" 
                                        FontSize="48"
                                        FontFamily="{StaticResource PhoneFontFamilySemiLight}"
                                        HorizontalAlignment="Left"
                                        VerticalAlignment="Bottom"/>
                            </Border>
                        </Border>
                    </DataTemplate>
                </toolkit:LongListSelector.GroupHeaderTemplate>
                <toolkit:LongListSelector.ItemTemplate>
                    <DataTemplate>
                        <StackPanel Margin="20,0">
                            <TextBlock Text="{Binding n}" Style="{StaticResource PhoneTextExtraLargeStyle}" 
                                       FontFamily="{StaticResource PhoneFontFamilySemiBold}" 
                                       Margin="12,5"/>
                        </StackPanel>
                    </DataTemplate>
                </toolkit:LongListSelector.ItemTemplate>
            </toolkit:LongListSelector>

没有“ItemContainerStyle”的LongListSelector，我不知道如何设置样式资源，就像普通的listboxitem一样。

Answer 1

如果您编辑ItemTemplate以使用ContentControl而不是TextBlock，则所选项目将使用手机重音画笔（确保您没有为内容控件设置前景色）：

<toolkit:LongListSelector.ItemTemplate>
    <DataTemplate>
        <StackPanel Margin="20,0">
            <ContentControl Text="{Binding n}" Style="{StaticResource PhoneTextExtraLargeStyle}" 
                            FontFamily="{StaticResource PhoneFontFamilySemiBold}" 
                            Margin="12,5"/>
        </StackPanel>
    </DataTemplate>
</toolkit:LongListSelector.ItemTemplate>

为了能够将其设置为自定义颜色，我最终覆盖了TemplatedListBoxItem的构造函数并设置了DefaultStyleKey：DefaultStyleKey = typeof(TemplatedListBoxItem);然后我为TemplatedListBoxItem设置了一个与System.Windows中的ListBoxItem样式匹配的样式。 xaml除了不同的选定项目视觉状态颜色。

如何在LongListSelector中设置SelectItem Foreground

1 个答案: