本地列表:MvxBind绑定程序

Question

我找不到可供使用的所有类型绑定的列表，最近发现了一个关于local:MvxBind=“可见性属性”的链接，这对我们的代码有很大帮助。我相信MvvMCross有很多隐藏的宝石，我们还不知道。信息在什么地方可查到吗？

我们知道的粘合剂：

• Local:MvxBind=“文本属性”
• local:MvxBind="ItemsSource属性；SelectedItem属性“
• Local:MvxBind=“点击ICommandProperty”
• local:MvxBind="ItemsSource Property；ItemClick ICommandProperty“
• Local:MvxBind=“可见性”

谢谢!

Answer 1

自动属性绑定

MvvmCross绑定到本机视图上的C#属性-因此由Xamarin.Android公开的任何公共C# get/set属性都可以单向绑定到。

此外，如果属性Foo附带有签名public event EventHandler FooChanged事件，那么MvvmCross可以双向绑定到它。

自动事件绑定

MvvmCross还绑定到由本机视图公开的任何public C# event，只要它们具有EventHandler签名和而不是 EventHandler<SomeSpecialArgs>。

它们可以自动绑定到ICommand调用方(操作自动绑定到Execute处理程序，但nothing自动绑定到CanExecute)。

自定义绑定

除了这些直接的属性外，MvvmCross还提供了“自定义绑定”的功能。

默认情况下，MvvmCross提供的“自定义绑定”列表在AndroidBindingBuilder - https://github.com/MvvmCross/MvvmCross/blob/v3/Cirrious/Cirrious.MvvmCross.Binding.Droid/MvxAndroidBindingBuilder.cs#L79中的FillTargetBindings中。

        registry.RegisterCustomBindingFactory<TextView>("Text",
                                                        textView => new MvxTextViewTextTargetBinding(textView));
        registry.RegisterPropertyInfoBindingFactory((typeof(MvxAutoCompleteTextViewPartialTextTargetBinding)),
                                                typeof(AutoCompleteTextView), "PartialText");
        registry.RegisterPropertyInfoBindingFactory(
                                                typeof(MvxAutoCompleteTextViewSelectedObjectTargetBinding),
                                                typeof(AutoCompleteTextView),
                                                "SelectedObject");
        registry.RegisterPropertyInfoBindingFactory(typeof(MvxCompoundButtonCheckedTargetBinding),
                                                typeof(CompoundButton), "Checked");
        registry.RegisterPropertyInfoBindingFactory(typeof(MvxSeekBarProgressTargetBinging), typeof(SeekBar),
                                                "Progress");
        registry.RegisterCustomBindingFactory<View>("Visible",
                                                        view => new MvxViewVisibleBinding(view));
        registry.RegisterCustomBindingFactory<View>("Hidden",
                                                        view => new MvxViewHiddenBinding(view));
        registry.RegisterCustomBindingFactory<ImageView>("Bitmap",
                                                        imageView => new MvxImageViewBitmapTargetBinding(imageView));
        registry.RegisterCustomBindingFactory<ImageView>("DrawableId",
                                                        imageView => new MvxImageViewDrawableTargetBinding(imageView));
        registry.RegisterCustomBindingFactory<ImageView>("DrawableName",
                                                        imageView => new MvxImageViewDrawableNameTargetBinding(imageView));
        registry.RegisterCustomBindingFactory<ImageView>("AssetImagePath",
                                                         imageView => new MvxImageViewImageTargetBinding(imageView));
        registry.RegisterCustomBindingFactory<MvxSpinner>("SelectedItem",
                                                                         spinner =>
                                                                         new MvxSpinnerSelectedItemBinding(
                                                                             spinner));
        registry.RegisterCustomBindingFactory<AdapterView>("SelectedItemPosition",
                                                                          adapterView =>
                                                                          new MvxAdapterViewSelectedItemPositionTargetBinding
                                                                              (adapterView));
        registry.RegisterCustomBindingFactory<MvxListView>("SelectedItem",
                                                                          adapterView =>
                                                                          new MvxListViewSelectedItemTargetBinding
                                                                              (adapterView));
        registry.RegisterCustomBindingFactory<RatingBar>("Rating",
                                                        ratingBar => new MvxRatingBarRatingTargetBinding(ratingBar));
        registry.RegisterCustomBindingFactory<View>("LongClick",
                                                        view =>
                                                        new MvxViewLongClickBinding(view));
        registry.RegisterCustomBindingFactory<MvxRadioGroup>("SelectedItem",
            radioGroup => new MvxRadioGroupSelectedItemBinding(radioGroup));

一些插件(特别是Color)也添加了自己的绑定。

有关添加自定义绑定的信息，请参阅http://slodge.blogspot.co.uk/2013/06/n28-custom-bindings-n1-days-of-mvvmcross.html。

关于自定义控件、动画和地图的N+1主题也值得关注--它们提供了自定义绑定的替代机制。

有关MvvmCross绑定的更多信息，请参见https://github.com/MvvmCross/MvvmCross/wiki/Databinding