绑定MvvmCross TextColor不适用于Android _android

知识的领域是无限的,我们的学习也是无限期的。这篇文章主要讲述绑定MvvmCross TextColor不适用于Android相关的知识，希望能为你提供帮助。
我收到以下警告：

[WARN]（MvxBind）无法为MvxValueConverterValueCombiner组合器操作创建绑定TextColor的目标绑定

绑定代码：

< TextView android:id="@+id/text_view_header" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="4dp" style="@style/text_group_header" app:MvxBind="Text DisplayHeader; TextColor AppointmentFeedHeaderGroupColor(StartTime)" />

AppointmentFeedHeaderGroupColorValueConverter.cs

public class AppointmentFeedHeaderGroupColorValueConverter: MvxValueConverter< DateTime, Color> { private static readonly IDateTimeService DateTimeService = Mvx.Resolve< IDateTimeService> (); private static readonly Color HeaderGroupBlack = GetColor(Resource.Color.black); private static readonly Color HeaderGroupRedLight = GetColor(Resource.Color.red_light); protected override Color Convert(DateTime value, Type targetType, object parameter, CultureInfo culture) { if (value != DateTimeService.Now.Date) { return HeaderGroupRedLight; }return HeaderGroupBlack; }private static Color GetColor(int resourceColorId) { var context = Mvx.Resolve< IMvxAndroidCurrentTopActivity> ().Activity; return new Color(ContextCompat.GetColor(context, resourceColorId)); } }

【绑定MvvmCross TextColor不适用于Android】我在文件LinkerPleaseInclude.cs中添加了以下代码。

public void Include(TextView text) { text.AfterTextChanged += (sender, args) => text.Text = "" + text.Text; text.Hint = "" + text.Hint; text.SetTextColor(Color.Black); var tc = text.TextColors; text.SetTextColor(tc); }

它没有帮助
答案首先，检查你的MvvmCross.Plugin.Color项目和Android项目中是否安装了PCL/NetStandard。
那么你的转换器应该在你的PCL / NetStandard项目中并继承

MvxColorValueConverter<
DateTime>

，这样你的颜色就不依赖于你的平台了：

public class AppointmentFeedHeaderGroupColorValueConverter: MvxColorValueConverter< DateTime> { private static readonly IDateTimeService DateTimeService = Mvx.Resolve< IDateTimeService> (); private static readonly MvxColor HeaderGroupBlack = new MvxColor(0,0,0); private static readonly MvxColor HeaderGroupRedLight = new MvxColor(255,0,0); // red_light, should see how to convert this to RGB valuesprotected override MvxColor Convert(DateTime value, object parameter, CultureInfo culture) { if (value != DateTimeService.Now.Date) { return HeaderGroupRedLight; }return HeaderGroupBlack; } }

最后，使用当前正在执行的颜色转换器：
TextColor AppointmentFeedHeaderGroupColor(StartTime)
更多信息：
MvvmCross Color docs
MvvmCross.Plugin.Color.MvxColorValueConverter.cs
在这里，您有MvvmCross提供的完整LinkerPleaseInclude文件。
HIH