From b96654276b8e423a21f95261449f578470e027d8 Mon Sep 17 00:00:00 2001
From: Nathan Walker <walkerrunpdx@gmail.com>
Date: Wed, 28 Oct 2020 11:36:51 -0700
Subject: [PATCH] fix(ios): UIImage.imageWithData.async is not a function

closes https://github.com/NativeScript/NativeScript/issues/8986
---
 packages/core/image-source/index.ios.ts | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/packages/core/image-source/index.ios.ts b/packages/core/image-source/index.ios.ts
index 647bdba59..e829a1408 100644
--- a/packages/core/image-source/index.ios.ts
+++ b/packages/core/image-source/index.ios.ts
@@ -154,8 +154,13 @@ export class ImageSource implements ImageSourceDefinition {
 		return new Promise<ImageSource>((resolve, reject) => {
 			try {
 				const data = NSData.alloc().initWithBase64EncodedStringOptions(source, NSDataBase64DecodingOptions.IgnoreUnknownCharacters);
-				UIImage.imageWithData['async'](UIImage, [data]).then((uiImage) => {
-					resolve(new ImageSource(uiImage));
+				const main_queue = dispatch_get_current_queue();
+				const background_queue = dispatch_get_global_queue(qos_class_t.QOS_CLASS_DEFAULT, 0);
+				dispatch_async(background_queue, () => {
+					const uiImage = UIImage.imageWithData(data);
+					dispatch_async(main_queue, () => {
+						resolve(new ImageSource(uiImage));
+					});
 				});
 			} catch (ex) {
 				reject(ex);