update zh-cn/application-dev/media/media-application-overview.md.

Signed-off-by: N葛亚芳 <geyafang@huawei.com>

zh-cn/application-dev/media/media-application-overview.md

@@ -24,4 +24,6 @@
 
 - [媒体管理合集（ArkTS）（Full SDK）(API9)](https://gitee.com/openharmony/applications_app_samples/tree/master/code/BasicFeature/FileManagement/MediaCollections)
 
-- [相机和媒体库（ArkTS）（Full SDK）(API9)](https://gitee.com/openharmony/applications_app_samples/tree/master/code/Solutions/Media/MultiMedia)
+- [相机和媒体库（ArkTS）（Full SDK）(API9)](https://gitee.com/openharmony/applications_app_samples/tree/master/code/Solutions/Media/MultiMedia)
\ No newline at end of file
+
+- [二维码扫描（ArkTS）（Full SDK）(API9)](https://gitee.com/openharmony/applications_app_samples/blob/master/code/BasicFeature/Media/QRCodeScan)
\ No newline at end of file