问题描述
每次我尝试在mainPage节目的“属性'Content'设置不止一次”中实现<maps:Map IsShowingUser="True" x:Name="Mapa" />
时。每次我放置在这个地方都会给我“属性“内容”设置多次”。
如果任何人都可以简单地解释设置Content属性的位置,那将是最有帮助的。
<ContentPage xmlns:maps="clr-namespace:Xamarin.Forms.GoogleMaps;assembly=Xamarin.Forms.GoogleMaps"
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
x:Class="Pap.MainPage">
<maps:Map IsShowingUser="True" x:Name="Mapa" />
<AbsoluteLayout VerticalOptions="FillAndExpand" x:Name="Main">
<StackLayout AbsoluteLayout.LayoutBounds="0,1,1" AbsoluteLayout.LayoutFlags="All" x:Name="main" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
<Image Source="C:\Users\david\Desktop\Pap\Pap\Pap.Android\Resources\drawable\User.png" Aspect="AspectFill" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"></Image>
</StackLayout>
<StackLayout x:Name="body" AbsoluteLayout.LayoutBounds="0,1" AbsoluteLayout.LayoutFlags="All"
Orientation="Vertical" VerticalOptions="FillAndExpand" Spacing="0">
<!--<StackLayout VerticalOptions="End" BackgroundColor="Red">
<Label Text="Titulo" />
</StackLayout>-->
<StackLayout VerticalOptions="FillAndExpand">
<Label Text="Slider-Example" HorizontalOptions="Center" VerticalOptions="Center"/>
<Image Source="C:\Users\david\Desktop\Pap\Pap\Pap.Android\Resources\drawable\User.png" Aspect="AspectFill"></Image>
<StackLayout.GestureRecognizers>
<TapGestureRecognizer Tapped="Handle_Tapped">
</TapGestureRecognizer>
</StackLayout.GestureRecognizers>
</StackLayout>
</StackLayout>
</AbsoluteLayout>
</ContentPage>
解决方法
ContentPage
具有隐式的Content
属性,该属性可以包含单个子元素。如果要在页面上包含多个内容,则需要使用Layout容器,例如StackLayout
<ContentPage ... >
<StackLayout>
... multiple children can go here
</StackLayout>
</ContentPage>
如果您使用的是C#而不是XAML,则应显式设置Content
属性
myPage.Content = new StackLayout{ ... };