[C#/MAUI/.NET6] ITextToSpeech 인터페이스 : SpeakAsync 정적 메소드에서 텍스트를 음성으로 출력할 때 취소하기

TestProject.zip

0.15MB

▶ MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml">
    <Grid
        ColumnDefinitions="*,Auto,*"
        RowDefinitions="*,Auto,Auto,10,Auto,*">
        <Label Grid.Row="1" Grid.Column="1"
            HorizontalOptions="Start"
            Text="메시지" />
        <Entry x:Name="messageEntry" Grid.Row="2" Grid.Column="1"
            HorizontalOptions="StartAndExpand"
            WidthRequest="300" />
        <Button x:Name="startButton" Grid.Row="4" Grid.Column="1"
            HorizontalOptions="Center"
            Margin="0,10,0,0"
            WidthRequest="150"
            Text="음성 출력 시작" />
    </Grid>
</ContentPage>

 

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▶ MainPage.xaml.cs

namespace TestProject;

/// <summary>
/// 메인 페이지
/// </summary>
public partial class MainPage : ContentPage
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Field
    ////////////////////////////////////////////////////////////////////////////////////////// Private

    #region Field

    /// <summary>
    /// 취소 토큰 소스
    /// </summary>
    private CancellationTokenSource cancellationTokenSource = null;

    #endregion

    //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 생성자 - MainPage()

    /// <summary>
    /// 생성자
    /// </summary>
    public MainPage()
    {
        InitializeComponent();

        this.startButton.Clicked += startButton_Clicked;
    }

    #endregion

    //////////////////////////////////////////////////////////////////////////////////////////////////// Method
    ////////////////////////////////////////////////////////////////////////////////////////// Private

    #region 음성 출력 시작 버튼 클릭시 처리하기 - startButton_Clicked(sender, e)

    /// <summary>
    /// 음성 출력 시작 버튼 클릭시 처리하기
    /// </summary>
    /// <param name="sender">이벤트 발생자</param>
    /// <param name="e">이벤트 인자</param>
    private async void startButton_Clicked(object sender, EventArgs e)
    {
        if(this.startButton.Text == "음성 출력 시작")
        {
            string message = this.messageEntry.Text;

            if(string.IsNullOrWhiteSpace(message))
            {
                await DisplayAlert("INFORMATION", "메시지를 입력해주시기 바랍니다.", "확인");

                return;
            }

            this.startButton.Text = "음성 출력 중단";

            this.cancellationTokenSource = new CancellationTokenSource();

            _ = TextToSpeech.Default.SpeakAsync(message, cancelToken : this.cancellationTokenSource.Token).ContinueWith
            (
                (t) =>
                {
                    this.cancellationTokenSource.Dispose();

                    this.cancellationTokenSource = null;

                    this.startButton.Text = "음성 출력 시작";
                },
                TaskScheduler.FromCurrentSynchronizationContext()
            );
        }
        else
        {
            if(this.cancellationTokenSource != null)
            {
                if(!this.cancellationTokenSource.IsCancellationRequested)
                {
                    this.cancellationTokenSource.Cancel();
                }
            }
        }
    }

    #endregion
}