System.TypeInitializationException Xamarin CarouselView

问题描述

Xamarin.Forms.ItemsView的类型初始值设定项引发了异常。单击按钮后。

The type initializer for 'Xamarin.Forms.ItemsView' threw an exception. After click button.

未处理的异常：

System.TypeInitializationException：Xamarin.Forms的类型初始值设定项。 ItemsView'引发了异常。

System.TypeInitializationException: The type initializer for 'Xamarin.Forms.ItemsView' threw an exception. occurred

`<CarouselView>
                    <CarouselView.ItemsSource>
                        <x:Array Type="{x:Type View}">
                            <ContentView>
                                <Image Source="yuzon.jpg"/>
                            </ContentView>
                            <ContentView>
                                <Image Source="yuzyirmi.jpg"/>
                            </ContentView>
                            <ContentView>
                                <Image Source="yuzkirks.jpg" />
                            </ContentView>
                            <Image Source="yuzelli.jpg" />
                            <ContentView>
                                <Image Source="yuzaltmis.jpg" />
                            </ContentView>
                            <ContentView>
                                <Image Source="ikiyuzyirmi.jpg"/>
                            </ContentView>
                            <ContentView>
                                <Image Source="ikiyuzkirkC.jpg" />
                            </ContentView>
                            <ContentView>
                                <Image Source="ikiyuzyetmis.jpg" />
                            </ContentView>
                            <Image Source="ucyuz.jpg"  />
                            <ContentView>
                                <Image Source="ucyuzF.jpg"  />
                            </ContentView>
                            <ContentView>
                                <Image Source="ucyuzon.jpg" />
                            </ContentView>
                            <ContentView>
                                <Image Source="ucyuzotuz.jpg"  />
                            </ContentView>
                            <ContentView>
                                <Image Source="ucyuzaltmis.jpg"  />
                            </ContentView>
                        </x:Array>
                    </CarouselView.ItemsSource>
                </CarouselView>`

推荐答案

此控件属于Xamarin.Forms 4.0。因此，您必须将表单版本更新为4.0才能测试此新功能。

This control belongs to Xamarin.Forms 4.0. So you have to update your forms version to 4.0 to test this new feature.

此外，您还必须添加

全局：: Xamarin.Forms.Forms.SetFlags（ CollectionView_Experimental）; 在您的MainActivity.cs和AppDelegate中启用此测试。

Moreover, you have to add
global::Xamarin.Forms.Forms.SetFlags("CollectionView_Experimental"); in your MainActivity.cs and AppDelegate to enable this testing.

不幸的是，Carousel View只能在Android上使用：

Unfortunately, Carousel View can be only used on Android: https://github.com/pauldipietro/CollectionViewSample.

关注该博客以了解更多概念：

Follow this blog to learn more concepts: https://devblogs.microsoft.com/xamarin/xamarin-forms-4-0-feature-preview-an-entirely-new-point-of-collectionview/

这篇关于System.TypeInitializationException Xamarin CarouselView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！