diff --git a/README.en.md b/README.en.md
index 099e8507a05431dd0200d4e1ae6012e5776dc2b2..6b129cf7c70cffeb1b2066dba02c0c1432ec05f9 100644
--- a/README.en.md
+++ b/README.en.md
@@ -19,8 +19,11 @@ Instructions:
 
 ```
 ├──entry/src/main/ets/
-│  ├──common/constant
-│  │  └──CommonConstants.ets            // Common constant class
+│  ├──common
+│  │  ├──constants
+│  │  │  └─CommonConstants.ets            // Common constant class
+│  │  └──utils
+│  │     └──Utils.ets                    // Utils class
 │  ├──entryability
 │  │  └──EntryAbility.ets               // Entry point class
 │  ├──page                  
diff --git a/README.md b/README.md
index 0165fd886c734adf46bf3be2c70170ec2507dc68..4e5a219c69d6166eaa9f2056f1fc0c9baa4a1c3d 100644
--- a/README.md
+++ b/README.md
@@ -19,8 +19,11 @@
 
 ```
 ├──entry/src/main/ets/
-│  ├──common/constant
-│  │  └──CommonConstants.ets            // 公共常量类
+│  ├──common
+│  │  ├──constants
+│  │  │  └─CommonConstants.ets            // 公共常量类
+│  │  └──utils
+│  │     └──Utils.ets                    // 工具类
 │  ├──entryability
 │  │  └──EntryAbility.ets               // 程序入口类
 │  ├──page                  
diff --git a/entry/src/main/ets/entryability/EntryAbility.ets b/entry/src/main/ets/entryability/EntryAbility.ets
index 9deb8c937762bd7c054fbf4a8c379d6b82b25671..83ad01fb4c98fa7fce1c18cee711165784718f7c 100644
--- a/entry/src/main/ets/entryability/EntryAbility.ets
+++ b/entry/src/main/ets/entryability/EntryAbility.ets
@@ -38,15 +38,19 @@ export default class EntryAbility extends UIAbility {
         AppStorage.setOrCreate('currentBreakpoint', this.curBp);
       }
     } catch (exception) {
-      hilog.error(0x0000, 'testTag',
-        `UpdateBreakpoint fail, error code: ${JSON.stringify((exception as BusinessError).code)}`);
+      hilog.error(0x0000, 'testTag', '%{public}s',
+        `UpdateBreakpoint fail, error code: ${(exception as BusinessError).code}`);
     }
   }
 
   onCreate(): void {
     hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');
     AppStorage.setOrCreate('systemColorMode', this.context.config.colorMode);
-    this.context.getApplicationContext().setColorMode(ConfigurationConstant.ColorMode.COLOR_MODE_NOT_SET);
+    try {
+      this.context.getApplicationContext().setColorMode(ConfigurationConstant.ColorMode.COLOR_MODE_NOT_SET);
+    } catch (err) {
+      hilog.error(0x0000, 'testTag', '%{public}s', `setColorMode fail. error code: ${err.code}`);
+    }
   }
 
   onDestroy(): void {
@@ -56,17 +60,21 @@ export default class EntryAbility extends UIAbility {
   onWindowStageCreate(windowStage: window.WindowStage): void {
     windowStage.getMainWindow().then((windowObj: window.Window) => {
       let type = window.AvoidAreaType.TYPE_NAVIGATION_INDICATOR;
-      let avoidArea = windowObj.getWindowAvoidArea(type);
-      let bottomRectHeight = avoidArea.bottomRect.height;
-      AppStorage.setOrCreate('bottomRectHeight', bottomRectHeight);
-      type = window.AvoidAreaType.TYPE_SYSTEM;
-      avoidArea = windowObj.getWindowAvoidArea(type);
-      let topRectHeight = avoidArea.topRect.height;
-      AppStorage.setOrCreate('topRectHeight', topRectHeight);
-      this.updateBreakpoint(windowObj.getWindowProperties().windowRect.width);
-      windowObj.on('windowSizeChange', (windowSize) => {
-        this.updateBreakpoint(windowSize.width);
-      })
+      try {
+        let avoidArea = windowObj.getWindowAvoidArea(type);
+        let bottomRectHeight = avoidArea.bottomRect.height;
+        AppStorage.setOrCreate('bottomRectHeight', bottomRectHeight);
+        type = window.AvoidAreaType.TYPE_SYSTEM;
+        avoidArea = windowObj.getWindowAvoidArea(type);
+        let topRectHeight = avoidArea.topRect.height;
+        AppStorage.setOrCreate('topRectHeight', topRectHeight);
+        this.updateBreakpoint(windowObj.getWindowProperties().windowRect.width);
+        windowObj.on('windowSizeChange', (windowSize) => {
+          this.updateBreakpoint(windowSize.width);
+        });
+      } catch (err) {
+        hilog.error(0x0000, 'testTag', '%{public}s', `config window fail. Cause: ${err.code}`);
+      }
     });
     // Main window is created, set main page for this ability
     hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageCreate');
@@ -75,16 +83,18 @@ export default class EntryAbility extends UIAbility {
     AppStorage.setOrCreate('resourceManager', resourceManager);
     windowStage.loadContent('pages/Index', (err) => {
       if (err.code) {
-        hilog.error(0x0000, 'Failed to load the content. Cause: %{public}s', JSON.stringify(err.code) ?? '');
+        hilog.error(0x0000, 'testTag', '%{public}s', `Failed to load the content. Cause: ${err.code}`);
         return;
       }
-      let windowClass: window.Window = windowStage.getMainWindowSync();
-      let isLayoutFullScreen = true;
-      windowClass.setWindowLayoutFullScreen(isLayoutFullScreen).then(() => {
-        hilog.info(0x0000, 'testTag', 'Succeeded in setting the window layout to full-screen mode.');
-      }).catch((err: BusinessError) => {
-        hilog.error(0x0000, 'Failed to set the window layout to full-screen mode.', JSON.stringify(err.code));
-      });
+      try {
+        let windowClass: window.Window = windowStage.getMainWindowSync();
+        let isLayoutFullScreen = true;
+        windowClass.setWindowLayoutFullScreen(isLayoutFullScreen).then(() => {
+          hilog.info(0x0000, 'testTag', '%{public}s', 'Succeeded in setting the window layout to full-screen mode.');
+        });
+      } catch (err) {
+        hilog.error(0x0000, 'testTag', '%{public}s', `Failed to set the window layout to full-screen mode. ${err.code}`);
+      }
     });
   }