diff --git a/entry/src/main/ets/entryability/EntryAbility.ets b/entry/src/main/ets/entryability/EntryAbility.ets
index 5aab3743e8628e14cf25cb69f791d19d0a700b75..7ce1ae2009f9d4df7fb0dde85d9fd23f5b91a5cb 100644
--- a/entry/src/main/ets/entryability/EntryAbility.ets
+++ b/entry/src/main/ets/entryability/EntryAbility.ets
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { common } from '@kit.AbilityKit';
 import { UIAbility , Want ,AbilityConstant } from '@kit.AbilityKit';
 import { window  } from '@kit.ArkUI';
 import { BusinessError } from '@kit.BasicServicesKit'
@@ -32,8 +33,19 @@ export default class EntryAbility extends UIAbility {
   onWindowStageCreate(windowStage: window.WindowStage): void {
     // Main window is created, set main page for this ability
     Logger.info(TAG, 'EntryAbility onWindowStageCreate');
-    requestFullScreen(windowStage, this.context);
-    windowStage.loadContent('pages/Index');
+    windowStage.loadContent('pages/Index', (err) => {
+      if (err.code) {
+        return;
+      }
+    });
+    windowStage.getMainWindow((err, data) => {
+      if (err.code) {
+        return;
+      }
+      let windowClass: window.Window = data;
+      let uiContext: UIContext = windowClass.getUIContext();
+      requestFullScreen(windowStage, uiContext);
+    });
   }
 
   onWindowStageDestroy(): void {
@@ -51,12 +63,9 @@ export default class EntryAbility extends UIAbility {
     Logger.info(TAG, 'MainAbility onBackground');
   }
 
-
-
-
 }
 
-function requestFullScreen(windowStage: window.WindowStage, context: Context): void {
+function requestFullScreen(windowStage: window.WindowStage, UIContext: UIContext): void {
   windowStage.getMainWindow((err: BusinessError, data: window.Window) => {
     if (err.code) {
       Logger.error(TAG, 'Failed to obtain the main window. Cause: ' + JSON.stringify(err));
@@ -71,7 +80,7 @@ function requestFullScreen(windowStage: window.WindowStage, context: Context): v
       let type = window.AvoidAreaType.TYPE_SYSTEM;
       // Get status bar height.
       let area: window.AvoidArea = windowClass.getWindowAvoidArea(type);
-      getDeviceSize(context, area);
+      getDeviceSize(UIContext, area);
       let promise: Promise<void> = windowClass.setWindowLayoutFullScreen(isLayoutFullScreen);
       promise.then(() => {
         windowStage.getMainWindowSync().setWindowBackgroundColor('#F1F3F5');
@@ -85,14 +94,16 @@ function requestFullScreen(windowStage: window.WindowStage, context: Context): v
   });
 }
 
-function getDeviceSize(context: Context, area: window.AvoidArea): void {
+function getDeviceSize(UIContext: UIContext, area: window.AvoidArea): void {
+  let context = UIContext.getHostContext() as common.UIAbilityContext;
+
   // Get device height.
   window.getLastWindow(context).then((data: window.Window) => {
     let properties = data.getWindowProperties();
     if (area.topRect.height > 0) {
-      AppStorage.setOrCreate<number>('statusBarHeight', px2vp(area.topRect.height));
+      AppStorage.setOrCreate<number>('statusBarHeight', UIContext.px2vp(area.topRect.height));
     }
-    AppStorage.setOrCreate<number>('deviceHeight', px2vp(properties.windowRect.height));
-    AppStorage.setOrCreate<number>('deviceWidth', px2vp(properties.windowRect.width));
+    AppStorage.setOrCreate<number>('deviceHeight', UIContext.px2vp(properties.windowRect.height));
+    AppStorage.setOrCreate<number>('deviceWidth', UIContext.px2vp(properties.windowRect.width));
   });
 }
\ No newline at end of file
diff --git a/entry/src/main/ets/pages/ForEachListPage.ets b/entry/src/main/ets/pages/ForEachListPage.ets
index 3ca74ee73410824b4ba85fde8291f5ed374bf282..dd2a827fdb904b696376cb525ecad8cf40e8eb1d 100644
--- a/entry/src/main/ets/pages/ForEachListPage.ets
+++ b/entry/src/main/ets/pages/ForEachListPage.ets
@@ -13,6 +13,7 @@
  * limitations under the License.
  */
 
+import { common } from '@kit.AbilityKit';
 import { LearningResource } from '../model/LearningResource';
 import { ObservedArray } from '../utils/ObservedArray';
 import { ArticleCardView } from '../components/ArticleCardView';
@@ -33,6 +34,9 @@ function bufferToString(buffer: ArrayBufferLike): string {
 @Entry
 @Component
 export struct ForEachListPage {
+  UIContext = this.getUIContext()
+  context = this.UIContext.getHostContext() as common.UIAbilityContext;
+
   // [StartExclude ForEachListPage1_start]
   @State articleList: LearningResource[] = [];
   @State collectedIds: ObservedArray<string> = ['1', '2', '3', '4', '5', '6'];
@@ -48,7 +52,7 @@ export struct ForEachListPage {
   }
 
   getArticleModelObjFromJSON() {
-    getContext(this).resourceManager.getRawFileContent('article1000.json').then(value => {
+    this.context.resourceManager.getRawFileContent('article1000.json').then(value => {
       let jsonObj = JSON.parse(bufferToString(value.buffer)) as LearningResource[];
       let resources: LearningResource[] = [];
       jsonObj.forEach((res: LearningResource) => {
diff --git a/entry/src/main/ets/pages/LazyForEachListPage.ets b/entry/src/main/ets/pages/LazyForEachListPage.ets
index 3b49f9126ec3b7839c474ba31a9e067ad050c5a6..e3378d5fde02d830d708d0d65a303b289c9f053e 100644
--- a/entry/src/main/ets/pages/LazyForEachListPage.ets
+++ b/entry/src/main/ets/pages/LazyForEachListPage.ets
@@ -13,6 +13,7 @@
  * limitations under the License.
  */
 
+import { common } from '@kit.AbilityKit';
 import { LearningResource } from '../model/LearningResource';
 import ArticleListData from '../model/ArticleListData';
 import { ObservedArray } from '../utils/ObservedArray';
@@ -37,6 +38,9 @@ function bufferToString(buffer: ArrayBufferLike): string {
 @Entry
 @Component
 export struct LazyForEachListPage {
+  UIContext = this.getUIContext()
+  context = this.UIContext.getHostContext() as common.UIAbilityContext;
+
   // [StartExclude LazyForEachListPage3_start]
   // [StartExclude LazyForEachListPage2_start]
   // [StartExclude LazyForEachListPage4_start]
@@ -54,7 +58,7 @@ export struct LazyForEachListPage {
   }
 
   getArticleModelObjFromJSON() {
-    getContext(this).resourceManager.getRawFileContent('article1000.json').then(value => {
+    this.context.resourceManager.getRawFileContent('article1000.json').then(value => {
       let jsonObj = JSON.parse(bufferToString(value.buffer)) as LearningResource[];
       let resources: LearningResource[] = [];
       jsonObj.forEach((res: LearningResource) => {