c# - Xamarin - 动画 StackLayout

Question

早上好，我正在尝试实现单击 StackPanel 上的 UserName 时的功能，以便键盘不会隐藏信息。但这不是最好的选择，我在 iOS 和 Android 上工作。你能帮帮我吗。

<?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="BackGround.BackGroundImageDemo" BackgroundImage="Avion.jpg">
    <ContentPage.Content >
     <StackLayout VerticalOptions="Center" Padding="5, 50, 120, 0" BackgroundColor="White" HorizontalOptions="Center">
        <Entry Placeholder="UserName" PlaceholderColor="Gray" TextColor="Navy"  />
        <Entry Placeholder="Password" IsPassword="true"  PlaceholderColor="Gray" TextColor="Navy"/>
     </StackLayout>

    </ContentPage.Content>
</ContentPage>

Chase 应用程序有类似的东西。

Chase UserName normal - Chase in mode up stacklayout

Answer 1

这可以使用 ScrollView 来实现。这是一个简单的代码片段。

<ContentPage.Content>
    <ScrollView x:Name="scr">

    Your Stack Layout having entry and click button
    Add TapGestureRecognizer to entry control in this case it is username or password whichever you want.
    How to add TapGestureRecognizer. You can look at here.

   </ScrollView>
</ContentPage.Content>

然后在你后面的代码上

field.GestureRecognizers.Add(new TapGestureRecognizer
{
    Command = new Command(async () => 
    { 
            await ScollTest();
    }),
    NumberOfTapsRequired = 1,
});

private async void ScollTest()
{
  // Then adjust your scroll this way.
  await scr.ScrollToAsync(100, 1000, true);
}