如何解决条目和按钮不集中在 xamarin 表单中
我正在使用 xamarin android 开发一个 android 应用程序。我正在使用 xaml 设计一页。在我的屏幕上，我有 5 张图片。它基本上是一个登录屏幕。但是这里 entry(textBox) 没有聚焦并且按钮按下也不起作用。如果我删除了一些图像和堆栈布局，那么它就可以正常工作。
下面是我的xaml
<StackLayout>
<Grid>
<Grid.ColumnDeFinitions>
<ColumnDeFinition Width="745"/>
<ColumnDeFinition Width="*"/>
</Grid.ColumnDeFinitions>
<StackLayout Orientation="Horizontal" HorizontalOptions="Center" Spacing="10" Grid.Column="0" >
<Grid Grid.Column="0" ColumnSpacing="80" RowSpacing="0">
<Grid.ColumnDeFinitions>
<ColumnDeFinition Width="*"/>
<ColumnDeFinition Width="*"/>
</Grid.ColumnDeFinitions>
<Grid.RowDeFinitions>
<RowDeFinition Height="100"/>
<RowDeFinition Height="100"/>
<RowDeFinition Height="250"/>
</Grid.RowDeFinitions>
<Image Source="image1.png" Margin="0" Grid.Row="0" Grid.Column="0" HorizontalOptions="StartAndExpand" HeightRequest="100" WidthRequest="200" />
<Image Source="image3.png" Margin="0" Grid.Row="0" Grid.Column="1" HorizontalOptions="StartAndExpand" HeightRequest="100" WidthRequest="200" />
<Label x:Name="lblTitle" FontSize="22" TextColor="Blue" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2"
FontAttributes="Bold" VerticalOptions="Center"
HorizontalTextAlignment="Center" Text="Title goes here"/>
<Image Source="image3.png" Grid.Row="2" Grid.Column="0" HorizontalOptions="StartAndExpand" HeightRequest="500" WidthRequest="500" />
<StackLayout Grid.Row="2" Grid.Column="1" InputTransparent="False" >
<Grid>
<Grid.ColumnDeFinitions>
<ColumnDeFinition Width="100"/>
<ColumnDeFinition Width="100"/>
</Grid.ColumnDeFinitions>
<Grid.RowDeFinitions>
<RowDeFinition Height="30"/>
<RowDeFinition Height="40"/>
<RowDeFinition Height="30"/>
<RowDeFinition Height="40"/>
<RowDeFinition Height="40"/>
<RowDeFinition Height="40"/>
</Grid.RowDeFinitions>
<Label FontSize="15" TextColor="Blue" Grid.Column="0" Grid.Row="0" Grid.ColumnSpan="2"
FontAttributes="Bold" VerticalOptions="Center"
HorizontalTextAlignment="Start" Text="User Name"/>
<Frame BorderColor="DodgerBlue" CornerRadius="0" Padding="0" Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="2">
<Entry x:Name="txtUsername" FontFamily="{StaticResource UbuntuRegularFontFamily}" Placeholder="Enter Username" HorizontalOptions="FillAndExpand" Text="" FontSize="15"/>
</Frame>
<Label FontSize="15" TextColor="Blue" Grid.Column="0" Grid.Row="2" Grid.ColumnSpan="2"
FontAttributes="Bold" VerticalOptions="Center"
HorizontalTextAlignment="Start" Text="Password"/>
<Frame BorderColor="DodgerBlue" CornerRadius="0" Padding="0" Grid.Column="0" Grid.Row="3" Grid.ColumnSpan="2">
<Entry x:Name="txtPassword" FontFamily="{StaticResource UbuntuRegularFontFamily}" Placeholder="Enter Password" IsPassword="True" HorizontalOptions="FillAndExpand" Text="" FontSize="15"/>
</Frame>
<Button x:Name="btnlogin" Grid.Row="4" Grid.Column="0" Text="LOGIN" WidthRequest="100" HeightRequest="40" ></Button>
<Button x:Name="btnCancel" Grid.Row="4" Grid.Column="1" Text="CANCEL" WidthRequest="100" HeightRequest="40" ></Button>
</Grid>
</StackLayout>
</Grid>
</StackLayout>
<StackLayout Grid.Row="3" InputTransparent="True">
<Grid>
<Grid.ColumnDeFinitions>
<ColumnDeFinition Width="150"/>
<ColumnDeFinition Width="150"/>
<ColumnDeFinition Width="100"/>
</Grid.ColumnDeFinitions>
<Grid.RowDeFinitions>
<RowDeFinition Height="*"/>
<RowDeFinition Height="*"/>
</Grid.RowDeFinitions>
<Image Source="image4.png" Margin="0" Grid.Row="1" Grid.Column="0" HorizontalOptions="StartAndExpand" HeightRequest="400" WidthRequest="250" />
<Label FontSize="25" TextColor="Black" Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2"
FontAttributes="Bold" VerticalOptions="Center"
HorizontalTextAlignment="Center" Text="year "/>
<Label FontSize="25" TextColor="Black" Grid.Row="1" Grid.Column="2" Grid.ColumnSpan="2"
FontAttributes="Bold" VerticalOptions="Center"
HorizontalTextAlignment="Center" Text="company name goes here"/>
</Grid>
</StackLayout>
<StackLayout Grid.RowSpan="1" Grid.Column="1" InputTransparent="True">
<Image Source="image5.png" Margin="0"
/>
</StackLayout>
</Grid >
</StackLayout>
解决方法
但是这里 entry(textbox) 没有聚焦并且按钮按下也不起作用。如果我删除了一些图像和堆栈布局，那么它就可以正常工作。
我测试你的代码，发现你把下面的代码放错了地方。
<StackLayout Grid.Row="3">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="150" />
<ColumnDefinition Width="150" />
<ColumnDefinition Width="100" />
</Grid.ColumnDefinitions>
<Image
Grid.Row="1"
Grid.Column="0"
Margin="0"
HeightRequest="400"
HorizontalOptions="StartAndExpand"
Source="check.png"
WidthRequest="250" />
<Label
Grid.Row="1"
Grid.Column="1"
FontAttributes="Bold"
FontSize="25"
HorizontalTextAlignment="Center"
Text="year "
TextColor="Black"
VerticalOptions="Center" />
<Label
Grid.Row="1"
Grid.Column="2"
FontAttributes="Bold"
FontSize="25"
HorizontalTextAlignment="Center"
Text="company name goes here"
TextColor="Black"
VerticalOptions="Center" />
</Grid>
</StackLayout>
您只定义了 3 个 RowDefinitions，但您使用了 Grid.Row="3" 上面的代码。
<StackLayout
Grid.Column="0"
HorizontalOptions="Center"
Orientation="Horizontal"
Spacing="10">
<Grid
Grid.Column="0"
ColumnSpacing="80"
RowSpacing="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="100" />
<RowDefinition Height="100" />
<RowDefinition Height="250" />
<RowDefinition Height="100" />
</Grid.RowDefinitions>
请看下面的代码，我用的是我的图片源。
<StackLayout>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<StackLayout
Grid.Column="0"
HorizontalOptions="Center"
Orientation="Horizontal"
Spacing="10">
<Grid
Grid.Column="0"
ColumnSpacing="80"
RowSpacing="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="100" />
<RowDefinition Height="100" />
<RowDefinition Height="250" />
<RowDefinition Height="100" />
</Grid.RowDefinitions>
<Image
Grid.Row="0"
Grid.Column="0"
Margin="0"
HeightRequest="100"
HorizontalOptions="StartAndExpand"
Source="c1.png"
WidthRequest="200" />
<Image
Grid.Row="0"
Grid.Column="1"
Margin="0"
HeightRequest="100"
HorizontalOptions="StartAndExpand"
Source="c10.png"
WidthRequest="200" />
<Label
x:Name="lblTitle"
Grid.Row="1"
Grid.Column="0"
Grid.ColumnSpan="2"
FontAttributes="Bold"
FontSize="22"
HorizontalTextAlignment="Center"
Text="Title goes here"
TextColor="Blue"
VerticalOptions="Center" />
<Image
Grid.Row="2"
Grid.Column="0"
HeightRequest="500"
HorizontalOptions="StartAndExpand"
Source="c11.png"
WidthRequest="500" />
<StackLayout
Grid.Row="2"
Grid.Column="1"
InputTransparent="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100" />
<ColumnDefinition Width="100" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="30" />
<RowDefinition Height="40" />
<RowDefinition Height="30" />
<RowDefinition Height="40" />
<RowDefinition Height="40" />
<RowDefinition Height="40" />
</Grid.RowDefinitions>
<Label
Grid.Row="0"
Grid.Column="0"
Grid.ColumnSpan="2"
FontAttributes="Bold"
FontSize="15"
HorizontalTextAlignment="Start"
Text="User Name"
TextColor="Blue"
VerticalOptions="Center" />
<Frame
Grid.Row="1"
Grid.Column="0"
Grid.ColumnSpan="2"
Padding="0"
BorderColor="DodgerBlue"
CornerRadius="0">
<Entry
x:Name="txtUsername"
FontSize="15"
HorizontalOptions="FillAndExpand"
Placeholder="Enter Username"
Text="" />
</Frame>
<Label
Grid.Row="2"
Grid.Column="0"
Grid.ColumnSpan="2"
FontAttributes="Bold"
FontSize="15"
HorizontalTextAlignment="Start"
Text="Password"
TextColor="Blue"
VerticalOptions="Center" />
<Frame
Grid.Row="3"
Grid.Column="0"
Grid.ColumnSpan="2"
Padding="0"
BorderColor="DodgerBlue"
CornerRadius="0">
<Entry
x:Name="txtPassword"
FontSize="15"
HorizontalOptions="FillAndExpand"
IsPassword="True"
Placeholder="Enter Password"
Text="" />
</Frame>
<Button
x:Name="btnlogin"
Grid.Row="4"
Grid.Column="0"
HeightRequest="40"
Text="LOGIN"
WidthRequest="100" />
<Button
x:Name="btnCancel"
Grid.Row="4"
Grid.Column="1"
HeightRequest="40"
Text="CANCEL"
WidthRequest="100" />
</Grid>
</StackLayout>
<StackLayout Grid.Row="3" InputTransparent="True">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="150" />
<ColumnDefinition Width="150" />
<ColumnDefinition Width="100" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Image
Grid.Row="1"
Grid.Column="0"
Margin="0"
HeightRequest="400"
HorizontalOptions="StartAndExpand"
Source="check.png"
WidthRequest="250" />
<Label
Grid.Row="1"
Grid.Column="1"
Grid.ColumnSpan="2"
FontAttributes="Bold"
FontSize="25"
HorizontalTextAlignment="Center"
Text="year "
TextColor="Black"
VerticalOptions="Center" />
<Label
Grid.Row="1"
Grid.Column="2"
Grid.ColumnSpan="2"
FontAttributes="Bold"
FontSize="25"
HorizontalTextAlignment="Center"
Text="company name goes here"
TextColor="Black"
VerticalOptions="Center" />
</Grid>
</StackLayout>
</Grid>
</StackLayout>
<StackLayout
Grid.RowSpan="1"
Grid.Column="1"
InputTransparent="True">
<Image Margin="0" Source="image5.png" />
</StackLayout>
</Grid>
</StackLayout>
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