AVAudioSession+Notifications.xml

<Type Name="AVAudioSession+Notifications" FullName="AVFoundation.AVAudioSession+Notifications">
  <TypeSignature Language="C#" Value="public static class AVAudioSession.Notifications" />
  <TypeSignature Language="ILAsm" Value=".class nested public auto ansi abstract sealed beforefieldinit AVAudioSession/Notifications extends System.Object" />
  <TypeSignature Language="DocId" Value="T:AVFoundation.AVAudioSession.Notifications" />
  <TypeSignature Language="F#" Value="type AVAudioSession.Notifications = class" />
  <AssemblyInfo>
    <AssemblyName>Xamarin.iOS</AssemblyName>
    <AssemblyVersion>0.0.0.0</AssemblyVersion>
  </AssemblyInfo>
  <Base>
    <BaseTypeName>System.Object</BaseTypeName>
  </Base>
  <Interfaces />
  <Docs>
    <summary>Notification posted by the <see cref="T:AVFoundation.AVAudioSession" /> class.</summary>
    <remarks>
      <para>This is a static class which contains various helper methods that allow developers to observe events posted in the iOS notification hub (<see cref="T:Foundation.NSNotificationCenter" />).</para>
      <para>The methods defined in this class post events invoke the provided method or lambda with a <see cref="T:Foundation.NSNotificationEventArgs" /> parameter which contains strongly typed properties for the notification arguments.</para>
    </remarks>
  </Docs>
  <Members>
    <Member MemberName="ObserveInterruption">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveInterruption (EventHandler&lt;AVFoundation.AVAudioSessionInterruptionEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveInterruption(class System.EventHandler`1&lt;class AVFoundation.AVAudioSessionInterruptionEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveInterruption(System.EventHandler{AVFoundation.AVAudioSessionInterruptionEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveInterruption : EventHandler&lt;AVFoundation.AVAudioSessionInterruptionEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveInterruption handler" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
        <AssemblyName>Xamarin.iOS</AssemblyName>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="handler" Type="System.EventHandler&lt;AVFoundation.AVAudioSessionInterruptionEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="handler">Method to invoke when the notification is posted.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.InterruptionNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para>The following example shows how developers can use this method in their code:</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
//
// Lambda style
//

// listening
notification = AVAudioSession.Notifications.ObserveInterruption ((sender, args) => {
    /* Access strongly typed args */
    Console.WriteLine ("Notification: {0}", args.Notification);

    Console.WriteLine ("InterruptionType", args.InterruptionType);
    Console.WriteLine ("Option", args.Option);
    Console.WriteLine ("WasSuspended", args.WasSuspended);
});

// To stop listening:
notification.Dispose ();

//
//Method style
//
NSObject notification;
void Callback (object sender, AVFoundation.AVAudioSessionInterruptionEventArgs args)
{
    // Access strongly typed args
    Console.WriteLine ("Notification: {0}", args.Notification);

    Console.WriteLine ("InterruptionType", args.InterruptionType);
    Console.WriteLine ("Option", args.Option);
    Console.WriteLine ("WasSuspended", args.WasSuspended);
}

void Setup ()
{
    notification = AVAudioSession.Notifications.ObserveInterruption (Callback);
}

void Teardown ()
{
    notification.Dispose ();
}]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="ObserveInterruption">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveInterruption (Foundation.NSObject objectToObserve, EventHandler&lt;AVFoundation.AVAudioSessionInterruptionEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveInterruption(class Foundation.NSObject objectToObserve, class System.EventHandler`1&lt;class AVFoundation.AVAudioSessionInterruptionEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveInterruption(Foundation.NSObject,System.EventHandler{AVFoundation.AVAudioSessionInterruptionEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveInterruption : Foundation.NSObject * EventHandler&lt;AVFoundation.AVAudioSessionInterruptionEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveInterruption (objectToObserve, handler)" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>Xamarin.iOS</AssemblyName>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="objectToObserve" Type="Foundation.NSObject" />
        <Parameter Name="handler" Type="System.EventHandler&lt;AVFoundation.AVAudioSessionInterruptionEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="objectToObserve">The specific object to observe.</param>
        <param name="handler">The handler that responds to the notification when it occurs.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.InterruptionNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para id="tool-remark">This method can be used to subscribe for <see cref="P:AVFoundation.AVAudioSession.InterruptionNotification" /> notifications.</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
// Listen to all notifications posted for any object
var token = AVAudioSession.Notifications.ObserveInterruption ((notification) => {
	Console.WriteLine ("Observed InterruptionNotification!");
};

// Listen to all notifications posted for a single object
var token = AVAudioSession.Notifications.ObserveInterruption (objectToObserve, (notification) => {
	Console.WriteLine ($"Observed InterruptionNotification for {nameof (objectToObserve)}!");
};

// Stop listening for notifications
token.Dispose ();
]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="ObserveMediaServicesWereLost">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveMediaServicesWereLost (EventHandler&lt;Foundation.NSNotificationEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveMediaServicesWereLost(class System.EventHandler`1&lt;class Foundation.NSNotificationEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveMediaServicesWereLost(System.EventHandler{Foundation.NSNotificationEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveMediaServicesWereLost : EventHandler&lt;Foundation.NSNotificationEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveMediaServicesWereLost handler" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
        <AssemblyName>Xamarin.iOS</AssemblyName>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="handler" Type="System.EventHandler&lt;Foundation.NSNotificationEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="handler">Method to invoke when the notification is posted.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.MediaServicesWereLostNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para>The following example shows how you can use this method in your code</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
//
// Lambda style
//

// listening
notification = AVAudioSession.Notifications.ObserveMediaServicesWereLost ((sender, args) => {
    /* Access strongly typed args */
    Console.WriteLine ("Notification: {0}", args.Notification);
});

// To stop listening:
notification.Dispose ();

//
//Method style
//
NSObject notification;
void Callback (object sender, Foundation.NSNotificationEventArgs args)
{
    // Access strongly typed args
    Console.WriteLine ("Notification: {0}", args.Notification);
}

void Setup ()
{
    notification = AVAudioSession.Notifications.ObserveMediaServicesWereLost (Callback);
}

void Teardown ()
{
    notification.Dispose ();
}]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="ObserveMediaServicesWereLost">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveMediaServicesWereLost (Foundation.NSObject objectToObserve, EventHandler&lt;Foundation.NSNotificationEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveMediaServicesWereLost(class Foundation.NSObject objectToObserve, class System.EventHandler`1&lt;class Foundation.NSNotificationEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveMediaServicesWereLost(Foundation.NSObject,System.EventHandler{Foundation.NSNotificationEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveMediaServicesWereLost : Foundation.NSObject * EventHandler&lt;Foundation.NSNotificationEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveMediaServicesWereLost (objectToObserve, handler)" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>Xamarin.iOS</AssemblyName>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="objectToObserve" Type="Foundation.NSObject" />
        <Parameter Name="handler" Type="System.EventHandler&lt;Foundation.NSNotificationEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="objectToObserve">The specific object to observe.</param>
        <param name="handler">The handler that responds to the notification when it occurs.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.MediaServicesWereLostNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para id="tool-remark">This method can be used to subscribe for <see cref="P:AVFoundation.AVAudioSession.MediaServicesWereLostNotification" /> notifications.</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
// Listen to all notifications posted for any object
var token = AVAudioSession.Notifications.ObserveMediaServicesWereLost ((notification) => {
	Console.WriteLine ("Observed MediaServicesWereLostNotification!");
};

// Listen to all notifications posted for a single object
var token = AVAudioSession.Notifications.ObserveMediaServicesWereLost (objectToObserve, (notification) => {
	Console.WriteLine ($"Observed MediaServicesWereLostNotification for {nameof (objectToObserve)}!");
};

// Stop listening for notifications
token.Dispose ();
]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="ObserveMediaServicesWereReset">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveMediaServicesWereReset (EventHandler&lt;Foundation.NSNotificationEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveMediaServicesWereReset(class System.EventHandler`1&lt;class Foundation.NSNotificationEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveMediaServicesWereReset(System.EventHandler{Foundation.NSNotificationEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveMediaServicesWereReset : EventHandler&lt;Foundation.NSNotificationEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveMediaServicesWereReset handler" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
        <AssemblyName>Xamarin.iOS</AssemblyName>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="handler" Type="System.EventHandler&lt;Foundation.NSNotificationEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="handler">Method to invoke when the notification is posted.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.MediaServicesWereResetNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para>The following example shows how you can use this method in your code</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
//
// Lambda style
//

// listening
notification = AVAudioSession.Notifications.ObserveMediaServicesWereReset ((sender, args) => {
    /* Access strongly typed args */
    Console.WriteLine ("Notification: {0}", args.Notification);
});

// To stop listening:
notification.Dispose ();

//
//Method style
//
NSObject notification;
void Callback (object sender, Foundation.NSNotificationEventArgs args)
{
    // Access strongly typed args
    Console.WriteLine ("Notification: {0}", args.Notification);
}

void Setup ()
{
    notification = AVAudioSession.Notifications.ObserveMediaServicesWereReset (Callback);
}

void Teardown ()
{
    notification.Dispose ();
}]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="ObserveMediaServicesWereReset">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveMediaServicesWereReset (Foundation.NSObject objectToObserve, EventHandler&lt;Foundation.NSNotificationEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveMediaServicesWereReset(class Foundation.NSObject objectToObserve, class System.EventHandler`1&lt;class Foundation.NSNotificationEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveMediaServicesWereReset(Foundation.NSObject,System.EventHandler{Foundation.NSNotificationEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveMediaServicesWereReset : Foundation.NSObject * EventHandler&lt;Foundation.NSNotificationEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveMediaServicesWereReset (objectToObserve, handler)" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>Xamarin.iOS</AssemblyName>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="objectToObserve" Type="Foundation.NSObject" />
        <Parameter Name="handler" Type="System.EventHandler&lt;Foundation.NSNotificationEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="objectToObserve">The specific object to observe.</param>
        <param name="handler">The handler that responds to the notification when it occurs.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.MediaServicesWereResetNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para id="tool-remark">This method can be used to subscribe for <see cref="P:AVFoundation.AVAudioSession.MediaServicesWereResetNotification" /> notifications.</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
// Listen to all notifications posted for any object
var token = AVAudioSession.Notifications.ObserveMediaServicesWereReset ((notification) => {
	Console.WriteLine ("Observed MediaServicesWereResetNotification!");
};

// Listen to all notifications posted for a single object
var token = AVAudioSession.Notifications.ObserveMediaServicesWereReset (objectToObserve, (notification) => {
	Console.WriteLine ($"Observed MediaServicesWereResetNotification for {nameof (objectToObserve)}!");
};

// Stop listening for notifications
token.Dispose ();
]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="ObserveRouteChange">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveRouteChange (EventHandler&lt;AVFoundation.AVAudioSessionRouteChangeEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveRouteChange(class System.EventHandler`1&lt;class AVFoundation.AVAudioSessionRouteChangeEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveRouteChange(System.EventHandler{AVFoundation.AVAudioSessionRouteChangeEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveRouteChange : EventHandler&lt;AVFoundation.AVAudioSessionRouteChangeEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveRouteChange handler" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
        <AssemblyName>Xamarin.iOS</AssemblyName>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="handler" Type="System.EventHandler&lt;AVFoundation.AVAudioSessionRouteChangeEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="handler">Method to invoke when the notification is posted.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.RouteChangeNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para>The following example shows how developers can use this method in their code:</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
//
// Lambda style
//

// listening
notification = AVAudioSession.Notifications.ObserveRouteChange ((sender, args) => {
    /* Access strongly typed args */
    Console.WriteLine ("Notification: {0}", args.Notification);

    Console.WriteLine ("Reason", args.Reason);
    Console.WriteLine ("PreviousRoute", args.PreviousRoute);
});

// To stop listening:
notification.Dispose ();

//
//Method style
//
NSObject notification;
void Callback (object sender, AVFoundation.AVAudioSessionRouteChangeEventArgs args)
{
    // Access strongly typed args
    Console.WriteLine ("Notification: {0}", args.Notification);

    Console.WriteLine ("Reason", args.Reason);
    Console.WriteLine ("PreviousRoute", args.PreviousRoute);
}

void Setup ()
{
    notification = AVAudioSession.Notifications.ObserveRouteChange (Callback);
}

void Teardown ()
{
    notification.Dispose ();
}]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="ObserveRouteChange">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveRouteChange (Foundation.NSObject objectToObserve, EventHandler&lt;AVFoundation.AVAudioSessionRouteChangeEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveRouteChange(class Foundation.NSObject objectToObserve, class System.EventHandler`1&lt;class AVFoundation.AVAudioSessionRouteChangeEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveRouteChange(Foundation.NSObject,System.EventHandler{AVFoundation.AVAudioSessionRouteChangeEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveRouteChange : Foundation.NSObject * EventHandler&lt;AVFoundation.AVAudioSessionRouteChangeEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveRouteChange (objectToObserve, handler)" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>Xamarin.iOS</AssemblyName>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="objectToObserve" Type="Foundation.NSObject" />
        <Parameter Name="handler" Type="System.EventHandler&lt;AVFoundation.AVAudioSessionRouteChangeEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="objectToObserve">The specific object to observe.</param>
        <param name="handler">The handler that responds to the notification when it occurs.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.RouteChangeNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para id="tool-remark">This method can be used to subscribe for <see cref="P:AVFoundation.AVAudioSession.RouteChangeNotification" /> notifications.</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
// Listen to all notifications posted for any object
var token = AVAudioSession.Notifications.ObserveRouteChange ((notification) => {
	Console.WriteLine ("Observed RouteChangeNotification!");
};

// Listen to all notifications posted for a single object
var token = AVAudioSession.Notifications.ObserveRouteChange (objectToObserve, (notification) => {
	Console.WriteLine ($"Observed RouteChangeNotification for {nameof (objectToObserve)}!");
};

// Stop listening for notifications
token.Dispose ();
]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="ObserveSilenceSecondaryAudioHint">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveSilenceSecondaryAudioHint (EventHandler&lt;AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveSilenceSecondaryAudioHint(class System.EventHandler`1&lt;class AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveSilenceSecondaryAudioHint(System.EventHandler{AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveSilenceSecondaryAudioHint : EventHandler&lt;AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveSilenceSecondaryAudioHint handler" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
        <AssemblyName>Xamarin.iOS</AssemblyName>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="handler" Type="System.EventHandler&lt;AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="handler">Method to invoke when the notification is posted.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.SilenceSecondaryAudioHintNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para>The following example shows how developers can use this method in their code:</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
//
// Lambda style
//

// listening
notification = AVAudioSession.Notifications.ObserveSilenceSecondaryAudioHint ((sender, args) => {
    /* Access strongly typed args */
    Console.WriteLine ("Notification: {0}", args.Notification);

    Console.WriteLine ("Hint", args.Hint);
    Console.WriteLine ("HintType", args.HintType);
});

// To stop listening:
notification.Dispose ();

//
//Method style
//
NSObject notification;
void Callback (object sender, AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs args)
{
    // Access strongly typed args
    Console.WriteLine ("Notification: {0}", args.Notification);

    Console.WriteLine ("Hint", args.Hint);
    Console.WriteLine ("HintType", args.HintType);
}

void Setup ()
{
    notification = AVAudioSession.Notifications.ObserveSilenceSecondaryAudioHint (Callback);
}

void Teardown ()
{
    notification.Dispose ();
}]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
    <Member MemberName="ObserveSilenceSecondaryAudioHint">
      <MemberSignature Language="C#" Value="public static Foundation.NSObject ObserveSilenceSecondaryAudioHint (Foundation.NSObject objectToObserve, EventHandler&lt;AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs&gt; handler);" />
      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class Foundation.NSObject ObserveSilenceSecondaryAudioHint(class Foundation.NSObject objectToObserve, class System.EventHandler`1&lt;class AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs&gt; handler) cil managed" />
      <MemberSignature Language="DocId" Value="M:AVFoundation.AVAudioSession.Notifications.ObserveSilenceSecondaryAudioHint(Foundation.NSObject,System.EventHandler{AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs})" />
      <MemberSignature Language="F#" Value="static member ObserveSilenceSecondaryAudioHint : Foundation.NSObject * EventHandler&lt;AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs&gt; -&gt; Foundation.NSObject" Usage="AVFoundation.AVAudioSession.Notifications.ObserveSilenceSecondaryAudioHint (objectToObserve, handler)" />
      <MemberType>Method</MemberType>
      <AssemblyInfo>
        <AssemblyName>Xamarin.iOS</AssemblyName>
        <AssemblyVersion>0.0.0.0</AssemblyVersion>
      </AssemblyInfo>
      <ReturnValue>
        <ReturnType>Foundation.NSObject</ReturnType>
      </ReturnValue>
      <Parameters>
        <Parameter Name="objectToObserve" Type="Foundation.NSObject" />
        <Parameter Name="handler" Type="System.EventHandler&lt;AVFoundation.AVAudioSessionSecondaryAudioHintEventArgs&gt;" />
      </Parameters>
      <Docs>
        <param name="objectToObserve">The specific object to observe.</param>
        <param name="handler">The handler that responds to the notification when it occurs.</param>
        <summary>Strongly typed notification for the <see cref="P:AVFoundation.AVAudioSession.SilenceSecondaryAudioHintNotification" /> constant.</summary>
        <returns>Token object that can be used to stop receiving notifications by either disposing it or passing it to <see cref="M:Foundation.NSNotificationCenter.RemoveObservers(System.Collections.Generic.IEnumerable{Foundation.NSObject})" /></returns>
        <remarks>
          <para id="tool-remark">This method can be used to subscribe for <see cref="P:AVFoundation.AVAudioSession.SilenceSecondaryAudioHintNotification" /> notifications.</para>
          <example>
            <code lang="csharp lang-csharp"><![CDATA[
// Listen to all notifications posted for any object
var token = AVAudioSession.Notifications.ObserveSilenceSecondaryAudioHint ((notification) => {
	Console.WriteLine ("Observed SilenceSecondaryAudioHintNotification!");
};

// Listen to all notifications posted for a single object
var token = AVAudioSession.Notifications.ObserveSilenceSecondaryAudioHint (objectToObserve, (notification) => {
	Console.WriteLine ($"Observed SilenceSecondaryAudioHintNotification for {nameof (objectToObserve)}!");
};

// Stop listening for notifications
token.Dispose ();
]]></code>
          </example>
        </remarks>
      </Docs>
    </Member>
  </Members>
</Type>