Code For Check Headphone Jack is Connected form Windows Phone Device or Not

This demo checking whether headphone jack is connected form Windows phone device or not. We are also checking the audio (.MP3) sound from earpiece and device loudspeaker in WP8.1

MainPage.xaml
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<phone:PhoneApplicationPage x:Class="TstApp.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone" xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:drawerLayout="using:DrawerLayout" mc:Ignorable="d" FontFamily="{StaticResource PhoneFontFamilyNormal}" FontSize="{StaticResource PhoneFontSizeNormal}" Foreground="{StaticResource PhoneForegroundBrush}" SupportedOrientations="Portrait" Orientation="Portrait" shell:SystemTray.IsVisible="True">
    <Grid x:Name="LayoutRoot" Background="LightGray">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" /> </Grid.RowDefinitions>
        <MediaElement x:Name="playbackElement1" Source="basictone.mp3" AutoPlay="False"></MediaElement>
        <TextBlock Name="scanComp" Foreground="BlueViolet" TextAlignment="Center" FontSize="30" Text="..." Height="95" Margin="0,53,0,352"></TextBlock>
        <TextBlock Name="scanComp1" Foreground="BlueViolet" TextAlignment="Center" FontSize="24" Text="..." Height="95"></TextBlock>
        <TextBlock Name="scanComp2" Foreground="BlueViolet" TextAlignment="Center" FontSize="30" Text="0" Height="95" Margin="0,386,0,19"></TextBlock>
        <Popup VerticalOffset="10" x:Name="JackPopup" IsOpen="False" Margin="28,235,62,265">
            <Border BorderThickness="2" Width="387" Height="254" Margin="0,0,0,0">
                <StackPanel Background="Gray" VerticalAlignment="Center" Height="216" Margin="12,17,-12,17">
                    <StackPanel Margin="14,0,-4,0" Orientation="Horizontal">
                        <TextBlock Text="Alert" Margin="30,2,2,10" HorizontalAlignment="Left" FontSize="36" Height="51" Width="189" /> </StackPanel>
                    <TextBlock Text="Unable to detect headphone. Plese connect and click Retry." Margin="0,10,0,0" TextWrapping="Wrap" FontSize="22" HorizontalAlignment="Right" Width="332" Height="67" />
                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="20,0,2,2" Height="69">
                        <Button Content="Skip" Click="SkipJackPopupClicked" Width="150" />
                        <Button Content="Retry" Click="RetryJackPopupClicked" Width="150" /> </StackPanel>
                </StackPanel>
            </Border>
        </Popup>
        <Popup VerticalOffset="10" x:Name="EarpiecePopup" IsOpen="False" Margin="28,235,62,265">
            <Border BorderThickness="2" Width="387" Height="254" Margin="0,0,0,0">
                <StackPanel Background="Gray" VerticalAlignment="Center" Height="216">
                    <StackPanel Margin="14,0,-4,0" Orientation="Horizontal">
                        <TextBlock Text="Alert" Margin="30,2,2,10" HorizontalAlignment="Left" FontSize="36" Height="51" Width="189" /> </StackPanel>
                    <TextBlock Text="Unable to detect headphone. Please connect and click Retry." Margin="0,10,0,0" TextWrapping="Wrap" FontSize="22" HorizontalAlignment="Right" Width="332" Height="67" />
                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="20,0,2,2" Height="69">
                        <Button Content="Skip" Click="SkipEarpiecePopupClicked" Width="150" />
                        <Button Content="Retry" Click="RetryEarpiecePopupClicked" Width="150" /> </StackPanel>
                </StackPanel>
            </Border>
        </Popup>
        <Popup VerticalOffset="10" x:Name="EarpieceSoundPopup" IsOpen="False" Margin="28,235,62,265">
            <Border BorderThickness="2" Width="387" Height="254" Margin="0,0,0,0">
                <StackPanel Background="Gray" VerticalAlignment="Center" Height="216">
                    <StackPanel Margin="14,0,-4,0" Orientation="Horizontal">
                        <TextBlock Text="Earpiece Audio" Margin="30,2,2,10" HorizontalAlignment="Left" FontSize="36" Height="51" Width="244" /> </StackPanel>
                    <TextBlock Text="Where you able to hear audio clearly? Plese open the earpiece jack and click Yes/No." Margin="0,5,0,0" TextWrapping="Wrap" FontSize="22" HorizontalAlignment="Right" Width="332" Height="91" />
                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="20,0,2,2" Height="69">
                        <Button Content="Yes" Click="YesPopupClicked" Width="150" />
                        <Button Content="No" Click="NoPopupClicked" Width="150" /> </StackPanel>
                </StackPanel>
            </Border>
        </Popup>
        <Popup VerticalOffset="10" x:Name="LoudspeakerSoundPopup" IsOpen="False" Margin="28,235,62,265">
            <Border BorderThickness="2" Width="387" Height="254" Margin="0,0,0,0">
                <StackPanel Background="Gray" VerticalAlignment="Center" Height="216">
                    <StackPanel Margin="14,0,-4,0" Orientation="Horizontal">
                        <TextBlock Text="Speaker Audio" Margin="30,2,2,10" HorizontalAlignment="Left" FontSize="36" Height="51" Width="259" /> </StackPanel>
                    <TextBlock Text="Where you able to hear audio clearly?" Margin="0,10,0,0" TextWrapping="Wrap" FontSize="22" HorizontalAlignment="Right" Width="332" Height="67" />
                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="20,0,2,2" Height="69">
                        <Button Content="Yes" Click="LoudspeakerYesPopupClicked" Width="150" />
                        <Button Content="No" Click="LoudspeakerNoPopupClicked" Width="150" /> </StackPanel>
                </StackPanel>
            </Border>
        </Popup>
    </Grid>
</phone:PhoneApplicationPage>



MainPage.xaml.cs

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namespace TstApp {
    public partial class MainPage: PhoneApplicationPage {
        DispatcherTimer headphoneTimer;
        DispatcherTimer speakerTimer;
        int currentcount = 0;
        public MainPage() {
            InitializeComponent();
            AudioRoutingManager.GetDefault().AudioEndpointChanged += AudioEndpointChanged;
            var roamingSettings = Windows.Storage.ApplicationData.Current.RoamingSettings;
            roamingSettings.Values["cntearpiece"] = 0;
            roamingSettings.Values["cntJack"] = 0;
            headphoneTimer = new DispatcherTimer();
            headphoneTimer.Interval = new TimeSpan(0, 0, 0, 1, 0);
            headphoneTimer.Tick += new EventHandler(headphoneTimer_Tick);
            speakerTimer = new DispatcherTimer();
            speakerTimer.Interval = new TimeSpan(0, 0, 0, 1, 0);
            speakerTimer.Tick += new EventHandler(speakerTimer_Tick);
            checkHeadphoneJack();
        }
        private void headphoneTimer_Tick(object sender, EventArgs e) {
            scanComp2.Text = currentcount--.ToString();
            string str = Convert.ToString(AudioRoutingManager.GetDefault().GetAudioEndpoint());
            if (str != "Speakerphone") {
                headphoneTimer.Stop();
                EarpiecePopup.IsOpen = true;
                ScanHeadphneSpeakerStart();
            }
            if (currentcount <= 0) {
                var roamingSettings = Windows.Storage.ApplicationData.Current.RoamingSettings;
                object cntJack = roamingSettings.Values["cntJack"];
                if (Convert.ToInt32(cntJack) == 1) {
                    headphoneTimer.Stop();
                    ScanHeadphneSpeakerStart();
                } else {
                    headphoneTimer.Stop();
                    JackPopup.IsOpen = true;
                }
            }
        }
        private void speakerTimer_Tick(object sender, EventArgs e) {
            scanComp2.Text = currentcount--.ToString();
            string str = Convert.ToString(AudioRoutingManager.GetDefault().GetAudioEndpoint());
            if (str != "Speakerphone") {
                speakerTimer.Stop();
                EarpiecePopup.IsOpen = true;
                ScanHeadphneSpeakerStart();
            }
            if (currentcount <= 0) {
                var roamingSettings = Windows.Storage.ApplicationData.Current.RoamingSettings;
                object cntearpiece = roamingSettings.Values["cntearpiece"];
                if (Convert.ToInt32(cntearpiece) == 1) {
                    speakerTimer.Stop();
                    ScanHeadphneSpeakerStart();
                } else {
                    speakerTimer.Stop();
                    EarpiecePopup.IsOpen = true;
                }
            }
        }
        public void AudioEndpointChanged(AudioRoutingManager sender, object args) {
            // ScanHeadphneSpeakerStart();
        }
        protected void checkHeadphoneJack() {
            scanComp.Text = "Scaning Headphone jack";
            string str = Convert.ToString(AudioRoutingManager.GetDefault().GetAudioEndpoint());
            if (str == "Speakerphone") {
                scanComp1.Text = "Please connect 3.5 mm jack.";
                currentcount = 10;
                headphoneTimer.Start();
            } else {
                ScanHeadphneSpeakerStart();
            }
        }
        protected async void ScanHeadphneSpeakerStart() {
            scanComp.Text = "Scanning Earpiece";
            string str = Convert.ToString(AudioRoutingManager.GetDefault().GetAudioEndpoint());
            var roamingSettings = Windows.Storage.ApplicationData.Current.RoamingSettings;
            object cntearpiece = roamingSettings.Values["cntearpiece"];
            if (str == "Speakerphone" && Convert.ToInt32(cntearpiece) == 0) {
                scanComp1.Text = "Please attach headphone jack.";
                currentcount = 10;
                speakerTimer.Start();
            } else if (str == "Speakerphone" && Convert.ToInt32(cntearpiece) == 1) {
                loudSpeakerStart();
                // Code for Earpiece slound fail.
            } else {
                playbackElement1.Stop();
                playbackElement1.AutoPlay = true;
                playbackElement1.Play();
                await Task.Delay(TimeSpan.FromSeconds(1));
                EarpieceSoundPopup.IsOpen = true;
            }
        }
        protected async void playEarpeceSound() {
            playbackElement1.Stop();
            playbackElement1.AutoPlay = true;
            playbackElement1.Play();
            await Task.Delay(TimeSpan.FromSeconds(1));
            EarpieceSoundPopup.IsOpen = true;
        }
        protected async void loudSpeakerStart() {
            playbackElement1.Stop();
            playbackElement1.AutoPlay = false;
            await Task.Delay(TimeSpan.FromSeconds(5));
            playbackElement1.AutoPlay = true;
            playbackElement1.Play();
            await Task.Delay(TimeSpan.FromSeconds(3));
            LoudspeakerSoundPopup.IsOpen = true;
        }
        protected void SkipJackPopupClicked(object sender, RoutedEventArgs e) {
            JackPopup.IsOpen = false;
            headphoneTimer.Stop();
            ScanHeadphneSpeakerStart();
        }
        protected void RetryJackPopupClicked(object sender, RoutedEventArgs e) {
            JackPopup.IsOpen = false;
            var roamingSettings = Windows.Storage.ApplicationData.Current.RoamingSettings;
            roamingSettings.Values["cntJack"] = 1;
            currentcount = 10;
            headphoneTimer.Start();
        }
        protected void YesPopupClicked(object sender, RoutedEventArgs e) {
            EarpieceSoundPopup.IsOpen = false;
            loudSpeakerStart();
        }
        protected void NoPopupClicked(object sender, RoutedEventArgs e) {
            EarpieceSoundPopup.IsOpen = false;
            loudSpeakerStart();
        }
        protected void SkipEarpiecePopupClicked(object sender, RoutedEventArgs e) {
            EarpiecePopup.IsOpen = false;
            speakerTimer.Stop();
            ScanHeadphneSpeakerStart();
        }
        protected void RetryEarpiecePopupClicked(object sender, RoutedEventArgs e) {
            EarpiecePopup.IsOpen = false;
            var roamingSettings = Windows.Storage.ApplicationData.Current.RoamingSettings;
            roamingSettings.Values["cntearpiece"] = 1;
            currentcount = 10;
            speakerTimer.Start();
        }
        protected void LoudspeakerYesPopupClicked(object sender, RoutedEventArgs e) {
            LoudspeakerSoundPopup.IsOpen = false;
            NavigationService.Navigate(new Uri("/Page1.xaml", UriKind.Relative));
        }
        protected void LoudspeakerNoPopupClicked(object sender, RoutedEventArgs e) {
            LoudspeakerSoundPopup.IsOpen = false;
            NavigationService.Navigate(new Uri("/Page1.xaml", UriKind.Relative));
        }
    }
}