Question

Iam尝试在xamarin.forms中进行相对布局，它在android中运行良好但是我没有在iOS中使用相同的值进行正确对齐，是否有任何方法可以为相对布局提供平台规范。

<RelativeLayout Grid.Row="0" VerticalOptions="StartAndExpand"  HeightRequest="112.5">
    <Image Source="close.png" Scale="0.3" RelativeLayout.XConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=0.25}">
        <Image.GestureRecognizers>
            <TapGestureRecognizer Command="{Binding CancelPopUpCommand}"/>
        </Image.GestureRecognizers>
    </Image>
</RelativeLayout>

Answer 1

您可以添加与平台相关的资源并将您的因素绑定到它：

<RelativeLayout Grid.Row="0" VerticalOptions="StartAndExpand"  HeightRequest="112.5">
    <RelativeLayout.Resources>
        <ResourceDictionary>
            <OnPlatform x:TypeArguments="x:Double" iOS="0.30" Android="0.25" x:Key="XFactor" />
        </ResourceDictionary>
    </RelativeLayout.Resources>
    <Image Source="close.png" Scale="0.3" RelativeLayout.XConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor={StaticResource XFactor}}">
        <Image.GestureRecognizers>
            <TapGestureRecognizer Command="{Binding CancelPopUpCommand}"/>
        </Image.GestureRecognizers>
    </Image>
</RelativeLayout>

来源：https://forums.xamarin.com/discussion/57281/how-can-i-make-platform-specific-relativelayout-xconstraint-in-xaml

如何使RelativeLayout.XConstraint平台具体化

1 个答案: