Xamarin表单:在相对布局内的框架内忽略图像高度请求

Question

我有以下代码:

<ScrollView Orientation="Vertical" Padding="0" VerticalOptions="FillAndExpand">
                <StackLayout Spacing="0" Padding="15,0">
                    <Frame HasShadow="false" BackgroundColor="Transparent" Padding="0">
                        <RelativeLayout BackgroundColor="Olive" Padding="0" VerticalOptions="End">
                            <Frame HeightRequest="100" WidthRequest="100" BackgroundColor="Purple" Padding="0" HasShadow="false">
                                <Image HeightRequest="50" WidthRequest="50" Source="assets/avatar-man.png"></Image>
                            </Frame>
                            <BoxView HeightRequest="100" BackgroundColor="Teal" RelativeLayout.XConstraint="{ConstraintExpression Type=Constant, Constant=100}" RelativeLayout.WidthConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=1, Constant=-100}" />
                            <Frame BackgroundColor="Transparent" HasShadow="false" Padding="0" RelativeLayout.XConstraint="{ConstraintExpression Type=Constant, Constant=100}" RelativeLayout.WidthConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=1, Constant=-100}">
                                <Label>Hello</Label>
                            </Frame>
                        </RelativeLayout>
                    </Frame>
                </StackLayout>
            </ScrollView>

但是,出于某种原因,图像高度请求被忽略,而不是显示50x50单位平方,它填充整个屏幕,如下所示:

有谁知道为什么会被忽略以及如何解决这个问题？

Answer 1

我有同样的问题,我最终在我的图像周围包裹StackLayout,如下所示:

<StackLayout>
  <Image Source="{Binding MyImage}" WidthRequest="50" HeightRequest="50"/>
</StackLayout>