增加Audio.PrefersNoInterruptionsFromSystemAlerts

Author: Aaron8052

Plugins/CS/Audio.cs

@@ -10,6 +10,8 @@ public static class Audio
     {
         [DllImport("__Internal")] static extern void Audio_Init(Action audioSessionRouteChangedCallback,
             ULongCallback audioInterruptionCallback);
+        [DllImport("__Internal")] static extern bool Audio_GetPrefersNoInterruptionsFromSystemAlerts();
+        [DllImport("__Internal")] static extern void Audio_SetPrefersNoInterruptionsFromSystemAlerts(bool prefersNoInterruptions);
         [DllImport("__Internal")] static extern float Audio_SystemVolume();
         [DllImport("__Internal")] static extern double Audio_InputLatency();
         [DllImport("__Internal")] static extern double Audio_OutputLatency();
@@ -28,10 +30,27 @@ static void Init()
 
 #region AudioInterruption
 
+        // https://developer.apple.com/documentation/avfaudio/avaudiosession/setprefersnointerruptionsfromsystemalerts(_:)?language=objc
+
+        /// <summary>
+        /// <para>设置系统铃声时是否中断Audio Session</para>
+        /// <para>Beginning in iOS 14, users can set a global preference that indicates whether the system displays incoming calls using a banner or a full-screen display style.
+        /// If using the banner style, setting this value to true prevents the system from interrupting the audio session with incoming call notifications,
+        /// and gives the user an opportunity to accept or decline the call. The system only interrupts the audio session if the user accepts the call.</para>
+        /// <para>Enabling this preference can improve the user experience of apps with audio sessions that
+        /// you don’t want to interrupt, such as those that record audiovisual media or that you use for music performance.</para>
+        /// <para>This preference has no effect if the device uses the full-screen display style—the system interrupts the audio session on incoming calls.</para>
+        /// </summary>
+        public static bool PrefersNoInterruptionsFromSystemAlerts
+        {
+            get => Audio_GetPrefersNoInterruptionsFromSystemAlerts();
+            set => Audio_SetPrefersNoInterruptionsFromSystemAlerts(value);
+        }
+
         static Action<AVAudioSessionInterruptionType> audioInterruptionEvent;
 
         /// <summary>
-        /// 游戏音频干扰与恢复事件
+        /// 游戏音频中断与恢复事件
         /// </summary>
         public static event Action<AVAudioSessionInterruptionType> AudioInterruptionEvent
         {

Plugins/Native/Headers/Audio.h

@@ -3,7 +3,9 @@
 @interface Audio : NSObject
 
 +(void)Init:(Action)audioSessionRouteChangedCallback
-    audioInterruptionEvent:(ULongCallback)audioInterruptionCallback;
+    audioInterruptionCallback:(ULongCallback)audioInterruptionCallback;
++(bool)GetPrefersNoInterruptionsFromSystemAlerts;
++(void)SetPrefersNoInterruptionsFromSystemAlerts:(BOOL)prefersNoInterruptions;
 +(float)SystemVolume;
 +(double)InputLatency;
 +(double)OutputLatency;
@@ -19,7 +21,13 @@ extern "C"
                     ULongCallback audioInterruptionCallback)
     {
         [Audio Init:audioSessionRouteChangedCallback
-            audioInterruptionEvent:audioInterruptionCallback];
+                    audioInterruptionCallback:audioInterruptionCallback];
+    }
+    bool Audio_GetPrefersNoInterruptionsFromSystemAlerts(){
+        return [Audio GetPrefersNoInterruptionsFromSystemAlerts];
+    }
+    void Audio_SetPrefersNoInterruptionsFromSystemAlerts(bool prefersNoInterruptions){
+        [Audio SetPrefersNoInterruptionsFromSystemAlerts:prefersNoInterruptions];
     }
     float Audio_SystemVolume()
     {

Plugins/Native/Implementations/Audio.mm

@@ -28,12 +28,24 @@ +(void)Init:(Action)audioSessionRouteChangedCallback
 
 //static BOOL audioInterrupted;
 
++(bool)GetPrefersNoInterruptionsFromSystemAlerts
+{
+    if (@available(iOS 14.5, *))
+        return [[AVAudioSession sharedInstance] prefersNoInterruptionsFromSystemAlerts];
+    return false;
+}
+
++(void)SetPrefersNoInterruptionsFromSystemAlerts:(BOOL)prefersNoInterruptions
+{
+    if (@available(iOS 14.5, *))
+        [[AVAudioSession sharedInstance] setPrefersNoInterruptionsFromSystemAlerts:prefersNoInterruptions error:nil];
+}
 
 +(void)OnAudioInterruptionEvent:(NSNotification *)notification
 {
     auto userInfo = notification.userInfo;
     auto typeValue = [userInfo[AVAudioSessionInterruptionTypeKey] unsignedIntegerValue];
-    auto type = (AVAudioSessionInterruptionType)typeValue;
+    //auto type = (AVAudioSessionInterruptionType)typeValue;
 
     //audioInterrupted = type == AVAudioSessionInterruptionTypeBegan;