MasterDetailPage背景图像不显示在IOS中xamarin.forms
问题描述:
我在Xamarin.Forms中使用MasterDetailPage。我在OnAppearing()方法中设置了BackgroundImage属性。它在Android中正常工作。但是,在IOS图像中不显示。MasterDetailPage背景图像不显示在IOS中xamarin.forms
我的代码:XAML
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="EzySales.Views.MainPageMaster"
Title="Master" >
<StackLayout VerticalOptions="FillAndExpand">
<ListView x:Name="MenuItemsListView" WidthRequest="200"
HasUnevenRows="true"
ItemsSource="{Binding MenuItems}"
SeparatorColor="White">
<ListView.Header>
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="10"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="10"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition Height="80"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="10"/>
</Grid.RowDefinitions>
<Image Source="logo.png" Grid.Row="1" Grid.Column="1"></Image>
</Grid>
</ListView.Header>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell Grid.Row="2">
<StackLayout Padding="15,10" Orientation="Horizontal">
<Image Source="{Binding Icon}"
WidthRequest="30"
HeightRequest="30" Margin="0,0,5,0"
VerticalOptions="Center" />
<Label VerticalOptions="FillAndExpand"
VerticalTextAlignment="Center"
HorizontalTextAlignment="Center"
Text="{Binding Title}"
TextColor="White"
FontSize="16" FontAttributes="Bold" />
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
MainPageMaster.xaml.cs
protected override void OnAppearing()
{
this.BackgroundImage = "masterpagebg.png";
}
图片是在资源文件夹中。
答
我也面临同样的问题和解决的。 试试这个希望这将有助于..
你可以使用一个相对布局达到的结果
<RelativeLayout>
<Image Source="masterpagebg.png" Opacity="1"
RelativeLayout.WidthConstraint=
"{ConstraintExpression Type=RelativeToParent, Property=Width}"
RelativeLayout.HeightConstraint=
"{ConstraintExpression Type=RelativeToParent, Property=Height}"/>
<ListView RelativeLayout.WidthConstraint=
"{ConstraintExpression Type=RelativeToParent, Property=Width}"
RelativeLayout.HeightConstraint=
"{ConstraintExpression Type=RelativeToParent, Property=Height}" x:Name="MenuItemsListView" WidthRequest="200"
HasUnevenRows="true"
ItemsSource="{Binding MenuItems}"
SeparatorColor="White">
<ListView.Header>
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="10"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="10"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition Height="80"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="10"/>
</Grid.RowDefinitions>
<Image Source="logo.png" Grid.Row="1" Grid.Column="1"></Image>
</Grid>
</ListView.Header>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell Grid.Row="2">
<StackLayout Padding="15,10" Orientation="Horizontal">
<Image Source="{Binding Icon}"
WidthRequest="30"
HeightRequest="30" Margin="0,0,5,0"
VerticalOptions="Center" />
<Label VerticalOptions="FillAndExpand"
VerticalTextAlignment="Center"
HorizontalTextAlignment="Center"
Text="{Binding Title}"
TextColor="White"
FontSize="16" FontAttributes="Bold" />
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</RelativeLayout>
仍然不能在IOS中工作。在Android中,它工作正常。 –
我认为您的图片未正确添加到您的解决方案中。所以请从您的解决方案中删除图像并再次添加。 –
我已删除并再次添加。但仍然没有工作。 –