[Mono.Android] add backlash enumification fix on bug#5473 (BletoothGattServerCallback)

from xamarin/xamarin-android-api-compatibility#5 (comment)

Author: atsushieno

src/Mono.Android/Android.Bluetooth/BluetoothGattServerCallback.cs

@@ -0,0 +1,40 @@
+using System;
+using Android.Runtime;
+
+namespace Android.Bluetooth
+{
+	// Proposed
+	partial class BluetoothGattServerCallback
+	{
+		// Old and busted
+		[Obsolete ("Use OnServiceAdded(Android.Bluetooth.GattStatus, Android.Bluetooth.BluetoothGattService)", true)]
+		[Register ("onServiceAdded", "(ILandroid/bluetooth/BluetoothGattService;)V", "GetOnServiceAdded_ILandroid_bluetooth_BluetoothGattService_Handler_ext")]
+		public virtual void OnServiceAdded (ProfileState status, BluetoothGattService service)
+		{
+			ActualOnServiceAdded (status, service);
+		}
+
+		void ActualOnServiceAdded (ProfileState status, BluetoothGattService service)
+		{
+			this.OnServiceAdded ((GattStatus) (int) status, service);
+		}
+
+		static Delegate cb_onServiceAdded_ILandroid_bluetooth_BluetoothGattService_ext;
+#pragma warning disable 0169
+		static Delegate GetOnServiceAdded_ILandroid_bluetooth_BluetoothGattService_Handler_ext ()
+		{
+			if (cb_onServiceAdded_ILandroid_bluetooth_BluetoothGattService_ext == null)
+				cb_onServiceAdded_ILandroid_bluetooth_BluetoothGattService_ext = JNINativeWrapper.CreateDelegate ((Action<IntPtr, IntPtr, int, IntPtr>) n_OnServiceAdded_ILandroid_bluetooth_BluetoothGattService_ext);
+			return cb_onServiceAdded_ILandroid_bluetooth_BluetoothGattService_ext;
+		}
+
+		static void n_OnServiceAdded_ILandroid_bluetooth_BluetoothGattService_ext (IntPtr jnienv, IntPtr native__this, int native_status, IntPtr native_service)
+		{
+			Android.Bluetooth.BluetoothGattServerCallback __this = global::Java.Lang.Object.GetObject<Android.Bluetooth.BluetoothGattServerCallback> (jnienv, native__this, JniHandleOwnership.DoNotTransfer);
+			Android.Bluetooth.ProfileState status = (Android.Bluetooth.ProfileState) native_status;
+			Android.Bluetooth.BluetoothGattService service = global::Java.Lang.Object.GetObject<Android.Bluetooth.BluetoothGattService> (native_service, JniHandleOwnership.DoNotTransfer);
+			__this.ActualOnServiceAdded (status, service);
+		}
+#pragma warning restore 0169
+	}
+}

src/Mono.Android/Mono.Android.csproj

@@ -121,6 +121,7 @@
     <Compile Include="Android.App\UsesPermissionAttribute.cs" />
     <Compile Include="Android.App.Admin\DevicePolicyManager.cs" />
     <Compile Include="Android.Bluetooth\BluetoothGattServer.cs" />
+    <Compile Include="Android.Bluetooth\BluetoothGattServerCallback.cs" />
     <Compile Include="Android.Content\ContentProvider.cs" />
     <Compile Include="Android.Content\ContentValues.cs" />
     <Compile Include="Android.Content\Context.cs" />