diff --git a/README.en.md b/README.en.md
index e6d391fb03fda1498cd68901f3e21cde1b6ea669..56685eaebf56e84ce66c42cfcf369877c740811c 100644
--- a/README.en.md
+++ b/README.en.md
@@ -16,10 +16,6 @@ The figure shows the effect on the tablet.
 
 ![](screenshots/device/pad.en.png)
 
-### Permissions
-
-N/A
-
 ### How to Use
 
 1. Install and open an app on a mobile phone, foldable phone, or tablet. The responsive layout and adaptive layout are used to display different effects on the app pages over different devices.
@@ -28,6 +24,10 @@ N/A
 4. Tap the comment button on the page to go to the corresponding comment page.
 5. Other buttons do not have actual tap events or functions.
 
+### Permissions
+
+N/A
+
 ### Constraints
 
 1. The sample is only supported on Huawei phones with standard systems.
diff --git a/README.md b/README.md
index c72b577822035ddafe5213bffb5ddd69bca225f8..b6c4b87209d2bb09b685833dbe4bc225257be452 100644
--- a/README.md
+++ b/README.md
@@ -16,10 +16,6 @@
 
 ![](screenshots/device/pad.png)
 
-### 相关权限
-
-不涉及
-
 ### 使用说明
 
 1. 分别在手机、折叠屏、平板安装并打开应用，不同设备的应用页面通过响应式布局和自适应布局呈现不同的效果。
@@ -28,6 +24,10 @@
 4. 点击界面上评论按钮跳转到对应的评论页面。
 5. 其他按钮无实际点击事件或功能。
 
+### 相关权限
+
+不涉及
+
 ### 约束与限制
 
 1. 本示例仅支持标准系统上运行，支持设备：华为手机。
diff --git a/common/mediaCommon/src/main/ets/utils/BackgroundUtil.ets b/common/mediaCommon/src/main/ets/utils/BackgroundUtil.ets
index cff7b52a1945bc0c478a1ff94de9559a347fd614..1ac92b37f02f31b7492d9b4eedb320bb0a450f93 100644
--- a/common/mediaCommon/src/main/ets/utils/BackgroundUtil.ets
+++ b/common/mediaCommon/src/main/ets/utils/BackgroundUtil.ets
@@ -19,7 +19,6 @@ import { BusinessError } from '@kit.BasicServicesKit';
 import { Logger } from './Logger';
 
 export class BackgroundUtil {
-
   /**
    * Start background task.
    *
@@ -44,15 +43,17 @@ export class BackgroundUtil {
 
     wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: Object) => {
       try {
-        backgroundTaskManager.startBackgroundRunning(context,
-          backgroundTaskManager.BackgroundMode.AUDIO_PLAYBACK, wantAgentObj).then(() => {
-          Logger.info('this avPlayer: ', 'startBackgroundRunning succeeded');
-        }).catch((error: BusinessError) => {
-          Logger.error('this avPlayer: ', `startBackgroundRunning failed Cause: code ${error.code}`);
-        });
+        if (canIUse('SystemCapability.ResourceSchedule.BackgroundTaskManager.Core')) {
+          backgroundTaskManager.startBackgroundRunning(context,
+            backgroundTaskManager.BackgroundMode.AUDIO_PLAYBACK, wantAgentObj).then(() => {
+            Logger.info('this avPlayer: ', 'startBackgroundRunning succeeded');
+          }).catch((error: BusinessError) => {
+            Logger.error('this avPlayer: ', `startBackgroundRunning failed Cause: code ${error.code}`);
+          });
+        }
       } catch (error) {
-        Logger.error('this avPlayer: ', `startBackgroundRunning failed. code ${(error as BusinessError).code}
-         message ${(error as BusinessError).message}`);
+        Logger.error('this avPlayer: ',
+          `startBackgroundRunning failed. code ${(error as BusinessError).code} message ${(error as BusinessError).message}`);
       }
     });
   }
@@ -63,15 +64,17 @@ export class BackgroundUtil {
    * @param context
    */
   public static stopContinuousTask(context: common.UIAbilityContext): void {
-    try {
-      backgroundTaskManager.stopBackgroundRunning(context).then(() => {
-        Logger.info('this avPlayer: ', 'stopBackgroundRunning succeeded');
-      }).catch((error: BusinessError) => {
-        Logger.error('this avPlayer: ', `stopBackgroundRunning failed Cause: code ${error.code}`);
-      });
-    } catch (error) {
-      Logger.error('this avPlayer: ', `stopBackgroundRunning failed. code ${(error as BusinessError).code}
-       message ${(error as BusinessError).message}`);
+    if (canIUse('SystemCapability.ResourceSchedule.BackgroundTaskManager.Core')) {
+      try {
+        backgroundTaskManager.stopBackgroundRunning(context).then(() => {
+          Logger.info('this avPlayer: ', 'stopBackgroundRunning succeeded');
+        }).catch((error: BusinessError) => {
+          Logger.error('this avPlayer: ', `stopBackgroundRunning failed Cause: code ${error.code}`);
+        });
+      } catch (error) {
+        Logger.error('this avPlayer: ',
+          `stopBackgroundRunning failed. code ${(error as BusinessError).code} message ${(error as BusinessError).message}`);
+      }
     }
   }
 }
\ No newline at end of file
diff --git a/common/mediaCommon/src/main/module.json5 b/common/mediaCommon/src/main/module.json5
index fe39b67723ad4379bcb4012c940d079887cc721c..9a0b30951a8f4cbaadc1b45cab27b15b924fce78 100644
--- a/common/mediaCommon/src/main/module.json5
+++ b/common/mediaCommon/src/main/module.json5
@@ -6,6 +6,11 @@
       "phone",
       "tablet",
       "2in1"
+    ],
+    "requestPermissions": [
+      {
+        "name": "ohos.permission.KEEP_BACKGROUND_RUNNING"
+      }
     ]
   }
 }
diff --git a/features/musicComment/src/main/ets/view/ListItemComponent.ets b/features/musicComment/src/main/ets/view/ListItemComponent.ets
index 1bccba56634d3f203e797c8c6f009813da5b79ed..5bfc207ddc21d210401624c3efbb997f7e31e48e 100644
--- a/features/musicComment/src/main/ets/view/ListItemComponent.ets
+++ b/features/musicComment/src/main/ets/view/ListItemComponent.ets
@@ -19,7 +19,7 @@ import { CommonConstants } from '../constants/CommonConstants';
 
 @Component
 export struct ListItemComponent {
-  private item: Comment = new Comment('', '', '', $r('app.media.ic_avatar12'));
+  public item: Comment = new Comment('', '', '', $r('app.media.ic_avatar12'));
 
   build() {
     Row() {
diff --git a/features/musicList/src/main/ets/components/MusicControlComponent.ets b/features/musicList/src/main/ets/components/MusicControlComponent.ets
index 1422d6a6eca652229b2ae4d28f4dee2c2b875473..e68a0ef83022911a18d05e14e221fb5e524c73b9 100644
--- a/features/musicList/src/main/ets/components/MusicControlComponent.ets
+++ b/features/musicList/src/main/ets/components/MusicControlComponent.ets
@@ -110,6 +110,7 @@ export struct MusicControlComponent {
                 left: $r('app.float.margin_small'),
                 right: $r('app.float.margin_small')
               })
+
               GridCol({
                 span: { md: BreakpointConstants.SPAN_SM }
               }) {
@@ -157,6 +158,7 @@ export struct MusicControlComponent {
                   bottom: $r('app.float.common_margin')
                 })
               }
+
               GridCol({
                 span: { md: BreakpointConstants.SPAN_SM, lg: BreakpointConstants.SPAN_MD },
                 offset: { lg: BreakpointConstants.OFFSET_MD }
@@ -242,7 +244,7 @@ export struct MusicControlComponent {
    */
   getImageColor() {
     if (!this.context) {
-      return ;
+      return;
     }
     this.context.resourceManager.getMediaContent(this.songList[this.selectIndex].label)
       .then((value: Uint8Array) => {
diff --git a/features/musicList/src/main/ets/lyric/LrcView.ets b/features/musicList/src/main/ets/lyric/LrcView.ets
index 01063caf8f660b0d171a02135bc1976abc88a4ef..84e85529867ef8923d85cd17fb0d11874b28d4f9 100644
--- a/features/musicList/src/main/ets/lyric/LrcView.ets
+++ b/features/musicList/src/main/ets/lyric/LrcView.ets
@@ -75,7 +75,7 @@ export default struct shiLrcView {
   /**
    * Location of the lyrics.
    */
-  private readonly lyricTopPosition: LyricTopPosition = LyricTopPosition.Top;
+  public readonly lyricTopPosition: LyricTopPosition = LyricTopPosition.Top;
 
   /**
    * Initial position of the first line of the lyrics.