Ich habe versucht, den ValueConverter für MVVMCross zu implementieren, aber aparently funktioniert es nicht so, wie ich es erwarten würde. Also habe ich gerade eine andere Property bekommen, die die Konvertierung (MvxColor to TextColor) für mich vornimmt und an mein Layout bindet. Aber OFC i eher die Wertwandler verwenden würde, vielleicht haben Sie eine Ahnung, was iam falsch zu machen:MVVMCross ValueConverter Bool zu MvxColor/Color
Die Bindung Fehler iam zur Zeit bekommen:
06-09 16:29:29.820 I/MvxBind (16312): 61,64 Problem seen during binding execution for binding TextColor for Changed - problem InvalidCastException: Specified cast is not valid.
06-09 16:29:29.820 I/MvxBind (16312): at MvvmCross.Plugins.Color.Droid.BindingTargets.MvxTextViewTextColorBinding.SetValueImpl (System.Object target, System.Object value) [0x0000a] in <filename unknown>:0
06-09 16:29:29.820 I/MvxBind (16312): at MvvmCross.Binding.Bindings.Target.MvxConvertingTargetBinding.SetValue (System.Object value) [0x00088] in <filename unknown>:0
06-09 16:29:29.820 I/MvxBind (16312): at MvvmCross.Binding.Bindings.MvxFullBinding.UpdateTargetFromSource (System.Object value) [0x00024] in <filename unknown>:0
MvxBind:Error: 61,64 Problem seen during binding execution for binding TextColor for Changed - problem InvalidCastException: Specified cast is not valid.
06-09 16:29:29.820 I/mono-stdout(16312): MvxBind:Error: 61,64 Problem seen during binding execution for binding TextColor for Changed - problem InvalidCastException: Specified cast is not valid.
06-09 16:29:29.820 I/mono-stdout(16312): at MvvmCross.Plugins.Color.Droid.BindingTargets.MvxTextViewTextColorBinding.SetValueImpl (System.Object target, System.Object value) [0x0000a] in <filename unknown>:0
at MvvmCross.Plugins.Color.Droid.BindingTargets.MvxTextViewTextColorBinding.SetValueImpl (System.Object target, System.Object value) [0x0000a] in <filename unknown>:0
at MvvmCross.Binding.Bindings.Target.MvxConvertingTargetBinding.SetValue (System.Object value) [0x00088] in <filename unknown>:0
06-09 16:29:29.830 I/mono-stdout(16312): at MvvmCross.Binding.Bindings.Target.MvxConvertingTargetBinding.SetValue (System.Object value) [0x00088] in <filename unknown>:0
at MvvmCross.Binding.Bindings.MvxFullBinding.UpdateTargetFromSource (System.Object value) [0x00024] in <filename unknown>:0
06-09 16:29:29.830 I/mono-stdout(16312): at MvvmCross.Binding.Bindings.MvxFullBinding.UpdateTargetFromSource (System.Object value) [0x00024] in <filename unknown>:0
[0:] MvxBind:Error: 61,64 Problem seen during binding execution for binding TextColor for Changed - problem InvalidCastException: Specified cast is not valid.
at MvvmCross.Plugins.Color.Droid.BindingTargets.MvxTextViewTextColorBinding.SetValueImpl (System.Object target, System.Object value) [0x0000a] in <filename unknown>:0
at MvvmCross.Binding.Bindings.Target.MvxConvertingTargetBinding.SetValue (System.Object value) [0x00088] in <filename unknown>:0
at MvvmCross.Binding.Bindings.MvxFullBinding.UpdateTargetFromSource (System.Object value) [0x00024] in <filename unknown>:0
mein Layout-Snippet:
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:singleLine="true"
android:inputType="numberDecimal|numberSigned"
android:textColor="@color/schaefflerlightgreen"
local:MvxBind="TextColor Changed,Converter=MvxBoolToColorValueConverter" />
Die beiden Konverter Klassen i ausprobiert:
public class MvxBoolToMvxColorValueConverter: MvxColorValueConverter<bool>
{
protected override MvxColor Convert(bool value, object parameter, CultureInfo culture)
{
if (value)
{
// FF0000
return new MvxColor(255, 0, 0);
}
//227D41
return new MvxColor(34, 125, 65);
}
}
public class MvxBoolToColorValueConverter : MvxValueConverter<bool, Color>
{
protected override Color Convert(bool value, Type targetType, object parameter, CultureInfo culture)
{
if (value)
{
// FF0000
return new Color(255, 0, 0);
}
//227D41
return new Color(34, 125, 65);
}
}
Die th Wenn die Bindung in der Regel mit einer MvxColor-Eigenschaft arbeitet, scheint nur die Konvertierung ein Problem zu sein. Also wahrscheinlich habe ich gerade etwas verpasst.
Also vielen Dank für Ihre Hilfe.
Edith: Und das Eigentum ...
public bool Changed { get { return m_sValue != m_sSyncValue; } }
Na ja, gesehen haben sollte das ... danke! – Cyriac