如何解决在自己的设备上调试 xamarin 项目时部分 UI 消失
我正在构建一个应用程序,并且当我使用模拟器时调试工作正常,并且一切看起来都是我想要的。 因为我使用的是条形码扫描仪,所以我开始在我自己的 android 设备上进行调试,但随后我在其中一个页面中的大部分 UI 消失了。 (见图片)
我在谷歌时找不到任何类似的问题(尽管这可能是我的谷歌技能不佳)。 Here is on my device when its all vanished
Here is what it is suppose to look like
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="TergeoAppUI.Views.RegisterInventoryPage"
xmlns:vm="clr-namespace:TergeoAppUI.viewmodels"
xmlns:ZXing="clr-namespace:ZXing.Net.Mobile.Forms;assembly=ZXing.Net.Mobile.Forms" xmlns:model="clr-namespace:Tergeo.Models;assembly=Tergeo.Models"
x:DataType="vm:RegisterInventoryviewmodel"
Title="{Binding Title}">
<StackLayout>
<Grid Padding="0,5,0" ColumnSpacing="2">
<Grid.RowDeFinitions>
<RowDeFinition Height="Auto"/>
<RowDeFinition Height="*"/>
</Grid.RowDeFinitions>
<Grid.ColumnDeFinitions>
<ColumnDeFinition Width="Auto"/>
<ColumnDeFinition Width="*"/>
</Grid.ColumnDeFinitions>
<Button
ImageSource="barcode.png"
Text="Scanna"
BackgroundColor="#AAC0AA"
BorderColor="Black"
BorderWidth="3"
HeightRequest="200"
Grid.Row="1"
Grid.Column="2"
Grid.RowSpan="1"
Margin="70,10,10"
Command="{Binding GoToScanCommand}"
/>
<Entry
Grid.Row="1"
Grid.ColumnSpan="3"
Margin="20,30,160,5"
Placeholder="EAN,PLU..."
VerticalOptions="FillAndExpand"
Completed="{Binding OnEanEntryCompletionCommand}"
Text="{Binding Ean}"
Keyboard="Numeric"
/>
</Grid>
<Label Margin="30,2" FontSize="Medium" Text="{Binding ArticleName}"/>
<StackLayout HeightRequest="200">
<Grid Padding="2" VerticalOptions="Fill" >
<Grid.RowDeFinitions>
<RowDeFinition Height="Auto"/>
<RowDeFinition Height="*"/>
</Grid.RowDeFinitions>
<Grid.ColumnDeFinitions>
<ColumnDeFinition Width="Auto"/>
<ColumnDeFinition Width="*"/>
</Grid.ColumnDeFinitions>
<Label
Grid.Row="1"
Margin="30,2"
FontSize="Medium"
Text="{Binding RetailPrice,StringFormat='Utpris: {0:N}'}"/>
<Entry
Placeholder="Antal"
Grid.Row="2"
Grid.ColumnSpan="2"
Grid.Column='0'
Margin="20,20,0"
FontSize="Medium"
Text="{Binding Quantity,StringFormat='Antal: {0:N}'}"/>
<Entry
Grid.ColumnSpan="2"
Margin="0,0"
Placeholder="Låda"
Grid.Row="2"
Grid.Column="2"
FontSize="Medium"
Text="{Binding Box,StringFormat='Låda: {0:S}'}"
Completed="{Binding OnRegistrationCompletedCommand}"/>
</Grid>
</StackLayout>
<!-- List with all the inventoryregistration for this specific list -->
<ListView
BackgroundColor="White"
ItemsSource="{Binding InventoryList}"
HasUnevenRows="True"
SelectionMode="None"
>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid Padding="1" ColumnSpacing="1">
<Grid.RowDeFinitions>
<RowDeFinition Height="Auto"/>
<RowDeFinition Height="*"/>
</Grid.RowDeFinitions>
<Grid.ColumnDeFinitions>
<ColumnDeFinition Width="Auto"/>
<ColumnDeFinition Width="*"/>
</Grid.ColumnDeFinitions>
<!-- ArticleName -->
<StackLayout
Padding="10,0"
x:DataType="model:InventoryInfoModel"
Grid.Column="0"
Grid.Row="0">
<Label
TextColor="Black"
FontFamily="PTC55F.ttf#ptc55f"
Text="{Binding ArticleName}"
FontSize="Small"/>
</StackLayout>
<!-- Article supplier -->
<StackLayout
Padding="10,0"
x:DataType="model:InventoryInfoModel"
Grid.Column="1"
Grid.Row="0"
Grid.ColumnSpan="2">
<Label
TextColor="Black"
FontFamily="PTC55F.ttf#ptc55f"
Text="{Binding supplier}"
FontSize="Small"/>
</StackLayout>
<!-- Article Ean -->
<StackLayout
Padding="10,0"
x:DataType="model:InventoryInfoModel"
Grid.Column="0"
Grid.Row="1">
<Label
FontFamily="PTC55F.ttf#ptc55f"
Margin="0,5"
Text="{Binding Ean}"
FontSize="Small"/>
</StackLayout>
<StackLayout
Padding="10,5"
Text="{Binding Plu}"
FontSize="Small"/>
</StackLayout>
<StackLayout
Padding="10,0"
x:DataType="model:InventoryInfoModel"
Grid.Column="1"
Grid.Row="1"
Grid.ColumnSpan="2">
<Label
FontFamily="PTC55F.ttf#ptc55f"
Margin="0,5"
Text="{Binding Quantity,StringFormat='Antal: {0:N}'}"
FontSize="Small"/>
</StackLayout>
<StackLayout
Padding="10,0"
x:DataType="model:InventoryInfoModel"
Grid.Column="4"
Grid.Row="0"
Grid.ColumnSpan="2">
<Label
FontFamily="PTC55F.ttf#ptc55f"
Margin="0,5"
Text="{Binding Box,StringFormat='Låda: {0:S}'}"
FontSize="Small"/>
</StackLayout>
<StackLayout
Padding="10,0"
x:DataType="model:InventoryInfoModel"
Grid.Column="4"
Grid.Row="1"
Grid.ColumnSpan="2">
<Label
FontFamily="PTC55F.ttf#ptc55f"
Margin="0,5"
Text="{Binding StorageName,StringFormat='Hyllplats: {0:S}'}"
FontSize="Small"/>
</StackLayout>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
</ContentPage>
解决方法
容易修复,当您在 android 设备上调试时,显然所有文本的默认颜色都是白色,所以我所做的只是将 PlaceholderColor 或 textcolor 添加到所有标签/条目。
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。