From 778b9c70fc986ee1db5449ea278da97e95383c02 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=BD=98=E5=BC=BA=E6=A0=87?= <panqiangbiao@huawei.com>
Date: Mon, 28 Mar 2022 06:50:46 +0000
Subject: [PATCH] fix getThumbnail promise Signed-off-by: panqiangbiao
 <panqiangbiao@huawei.com>

---
 .../reference/apis/js-apis-medialibrary.md         | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/zh-cn/application-dev/reference/apis/js-apis-medialibrary.md b/zh-cn/application-dev/reference/apis/js-apis-medialibrary.md
index f0ce12ad54..4fa7c3841d 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-medialibrary.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-medialibrary.md
@@ -1149,15 +1149,19 @@ getThumbnail(size?: Size): Promise&lt;image.PixelMap&gt;
 async function example() {
     let imageType = mediaLibrary.MediaType.IMAGE;
     let getImageOp = {
-      selections: fileKeyObj.MEDIA_TYPE + '= ?',
-      selectionArgs: [imageType.toString()],
-      order: fileKeyObj.DATE_ADDED + " DESC",
-      extendArgs: "",
+        selections: fileKeyObj.MEDIA_TYPE + '= ?',
+        selectionArgs: [imageType.toString()],
+        order: fileKeyObj.DATE_ADDED + " DESC",
+        extendArgs: "",
     };
     const fetchFileResult = await media.getFileAssets(getImageOp);
     const asset = await fetchFileResult.getFirstObject();
-    asset.getThumbnail(size, (err, pixelmap) => {
+    asset.getThumbnail(size)
+    .then((pixelmap) => {
         console.info('mediaLibraryTest : getThumbnail Successfull '+ pixelmap);
+    })
+    .catch((err) => {
+        console.info('mediaLibraryTest : getThumbnail fail'+ err);
     });
 }
 ```
-- 
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