uwp 自定义语音识别规则

xml  code

----------------------------------------------------

<Page

x:Class="MyApp.MainPage"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:local="using:MyApp"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

mc:Ignorable="d"

Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

<StackPanel>

<Button Content="开始说话" Click="OnClick"/>

<TextBlock TextWrapping="Wrap" FontSize="20">

<Run>

请说出：把颜色改为[红色]

</Run>

<LineBreak/>

<Run>或者：把颜色设置为[红色]</Run>

<LineBreak/>

<Run>

[红色]必须是以下值中的一个：红色、白色、蓝色、绿色

</Run>

</TextBlock>

<TextBlock Name="tbRes" FontSize="24" TextWrapping="Wrap" Foreground="LightGreen"/>

</StackPanel>

</Page>

C#  code

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public sealed partial class MainPage : Page

{

public MainPage()

{

this.InitializeComponent();

this.NavigationCacheMode = NavigationCacheMode.Required;

}

/// <summary>

/// Invoked when this page is about to be displayed in a Frame.

/// </summary>

/// <param name="e">Event data that describes how this page was reached.

/// This parameter is typically used to configure the page.</param>

protected override void OnNavigatedTo(NavigationEventArgs e)

{

// TODO: Prepare page for display here.

// TODO: If your application contains multiple pages, ensure that you are

// handling the hardware Back button by registering for the

// Windows.Phone.UI.Input.HardwareButtons.BackPressed event.

// If you are using the NavigationHelper provided by some templates,

// this event is handled for you.

}

private async void OnClick(object sender, RoutedEventArgs e)

{

Button btn = sender as Button;

btn.IsEnabled = false;

using (SpeechRecognizer recognizer = new SpeechRecognizer())

{

try

{

// 加载语法文件

StorageFile sgrsFile = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///sgrs.xml"));

// 创建识别约束

SpeechRecognitionGrammarFileConstraint grammarfileConstraint = new SpeechRecognitionGrammarFileConstraint(sgrsFile);

// 加入到约束集合中

recognizer.Constraints.Add(grammarfileConstraint);

// 编译约束

SpeechRecognitionCompilationResult compilationResult = await recognizer.CompileConstraintsAsync();

if (compilationResult.Status == SpeechRecognitionResultStatus.Success)

{

// 开始识别

SpeechRecognitionResult result = await recognizer.RecognizeAsync();

if(result.Status == SpeechRecognitionResultStatus.Success)

{

tbRes.Text = string.Format("识别结果：{0}。", result.Text);

}

}

}

catch (Exception ex)

{

System.Diagnostics.Debug.WriteLine(ex.Message);

}

}

btn.IsEnabled = true;

}

}

约束文件 　　sgr.xml

-----------------------------------------------------------------------------------

<?xml version="1.0" encoding="utf-8" ?>

<grammar xmlns="http://www.w3.org/2001/06/grammar" tag-format="semantics/1.0" version="1.0" xml:lang="zh-cn" root="color">

<rule id="color">

<item repeat="0-1">把</item>

<item>颜色</item>

<one-of>

<item>设置为</item>

<item>改为</item>

</one-of>

<one-of>

<item>红色</item>

<item>白色</item>

<item>绿色</item>

<item>蓝色</item>

</one-of>

</rule>

</grammar>