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Assets/3rd/NativeGallery/Android/NGMediaReceiveCallbackAndroid.cs

@@ -0,0 +1,92 @@
+#if !UNITY_EDITOR && UNITY_ANDROID
+using UnityEngine;
+
+namespace NativeGalleryNamespace
+{
+	public class NGMediaReceiveCallbackAndroid : AndroidJavaProxy
+	{
+		private readonly NativeGallery.MediaPickCallback callback;
+		private readonly NativeGallery.MediaPickMultipleCallback callbackMultiple;
+
+		private readonly NGCallbackHelper callbackHelper;
+
+		public NGMediaReceiveCallbackAndroid( NativeGallery.MediaPickCallback callback, NativeGallery.MediaPickMultipleCallback callbackMultiple ) : base( "com.yasirkula.unity.NativeGalleryMediaReceiver" )
+		{
+			this.callback = callback;
+			this.callbackMultiple = callbackMultiple;
+			callbackHelper = new GameObject( "NGCallbackHelper" ).AddComponent<NGCallbackHelper>();
+		}
+
+		public void OnMediaReceived( string path )
+		{
+			callbackHelper.CallOnMainThread( () => MediaReceiveCallback( path ) );
+		}
+
+		public void OnMultipleMediaReceived( string paths )
+		{
+			string[] result = null;
+			if( !string.IsNullOrEmpty( paths ) )
+			{
+				string[] pathsSplit = paths.Split( '>' );
+
+				int validPathCount = 0;
+				for( int i = 0; i < pathsSplit.Length; i++ )
+				{
+					if( !string.IsNullOrEmpty( pathsSplit[i] ) )
+						validPathCount++;
+				}
+
+				if( validPathCount == 0 )
+					pathsSplit = new string[0];
+				else if( validPathCount != pathsSplit.Length )
+				{
+					string[] validPaths = new string[validPathCount];
+					for( int i = 0, j = 0; i < pathsSplit.Length; i++ )
+					{
+						if( !string.IsNullOrEmpty( pathsSplit[i] ) )
+							validPaths[j++] = pathsSplit[i];
+					}
+
+					pathsSplit = validPaths;
+				}
+
+				result = pathsSplit;
+			}
+
+			callbackHelper.CallOnMainThread( () => MediaReceiveMultipleCallback( result ) );
+		}
+
+		private void MediaReceiveCallback( string path )
+		{
+			if( string.IsNullOrEmpty( path ) )
+				path = null;
+
+			try
+			{
+				if( callback != null )
+					callback( path );
+			}
+			finally
+			{
+				Object.Destroy( callbackHelper );
+			}
+		}
+
+		private void MediaReceiveMultipleCallback( string[] paths )
+		{
+			if( paths != null && paths.Length == 0 )
+				paths = null;
+
+			try
+			{
+				if( callbackMultiple != null )
+					callbackMultiple( paths );
+			}
+			finally
+			{
+				Object.Destroy( callbackHelper );
+			}
+		}
+	}
+}
+#endif