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Assets/3rd/NativeGallery/iOS/NGMediaReceiveCallbackiOS.cs

@@ -0,0 +1,72 @@
+#if !UNITY_EDITOR && UNITY_IOS
+using UnityEngine;
+
+namespace NativeGalleryNamespace
+{
+	public class NGMediaReceiveCallbackiOS : MonoBehaviour
+	{
+		private static NGMediaReceiveCallbackiOS instance;
+		private NativeGallery.MediaPickCallback callback;
+
+		private float nextBusyCheckTime;
+
+		public static bool IsBusy { get; private set; }
+		
+		[System.Runtime.InteropServices.DllImport( "__Internal" )]
+		private static extern int _NativeGallery_IsMediaPickerBusy();
+
+		public static void Initialize( NativeGallery.MediaPickCallback callback )
+		{
+			if( IsBusy )
+				return;
+
+			if( instance == null )
+			{
+				instance = new GameObject( "NGMediaReceiveCallbackiOS" ).AddComponent<NGMediaReceiveCallbackiOS>();
+				DontDestroyOnLoad( instance.gameObject );
+			}
+
+			instance.callback = callback;
+
+			instance.nextBusyCheckTime = Time.realtimeSinceStartup + 1f;
+			IsBusy = true;
+		}
+		
+		private void Update()
+		{
+			if( IsBusy )
+			{
+				if( Time.realtimeSinceStartup >= nextBusyCheckTime )
+				{
+					nextBusyCheckTime = Time.realtimeSinceStartup + 1f;
+
+					if( _NativeGallery_IsMediaPickerBusy() == 0 )
+					{
+						if( callback != null )
+						{
+							callback( null );
+							callback = null;
+						}
+
+						IsBusy = false;
+					}
+				}
+			}
+		}
+
+		public void OnMediaReceived( string path )
+		{
+			if( string.IsNullOrEmpty( path ) )
+				path = null;
+
+			if( callback != null )
+			{
+				callback( path );
+				callback = null;
+			}
+			
+			IsBusy = false;
+		}
+	}
+}
+#endif