diff --git a/build-profile.json5 b/build-profile.json5
index 1e69556b3411622cb2e87a87389653bb34f1b148..03ac3a3ae9dd397844173066e5d5ee21b49455a1 100644
--- a/build-profile.json5
+++ b/build-profile.json5
@@ -5,7 +5,7 @@
       {
         "name": "default",
         "signingConfig": "default",
-        "compatibleSdkVersion": "5.0.0(12)",
+        "compatibleSdkVersion": "5.0.4(16)",
         "runtimeOS": "HarmonyOS",
         "buildOption": {
           "strictMode": {
diff --git a/entry/src/main/ets/entryability/EntryAbility.ets b/entry/src/main/ets/entryability/EntryAbility.ets
index 2070f9634a477f7fee56b29f6c0425a91f66f7ac..94b5b08c5a76d62d6b6a4091df9c371e1a2d3195 100644
--- a/entry/src/main/ets/entryability/EntryAbility.ets
+++ b/entry/src/main/ets/entryability/EntryAbility.ets
@@ -33,6 +33,8 @@ export default class EntryAbility extends UIAbility {
     hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageCreate');
 
     windowStage.loadContent('pages/Index', (err) => {
+      AppStorage.setOrCreate('uiContext', windowStage.getMainWindowSync().getUIContext());
+      const uiContext: UIContext | undefined = AppStorage.get('uiContext');
       if (err.code) {
         hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? '');
         return;
@@ -44,8 +46,8 @@ export default class EntryAbility extends UIAbility {
       const avoidAreaBottom = windowClass.getWindowAvoidArea(window.AvoidAreaType.TYPE_NAVIGATION_INDICATOR);
       const topRectHeight = avoidAreaTop.topRect.height;
       const bottomRectHeight = avoidAreaBottom.bottomRect.height;
-      AppStorage.setOrCreate('topRectHeight', px2vp(topRectHeight));
-      AppStorage.setOrCreate('bottomRectHeight', px2vp(bottomRectHeight));
+      AppStorage.setOrCreate('topRectHeight', uiContext?.px2vp(topRectHeight));
+      AppStorage.setOrCreate('bottomRectHeight', uiContext?.px2vp(bottomRectHeight));
       let uiContext:  UIContext | undefined = windowStage.getMainWindowSync().getUIContext()
       AppStorage.setOrCreate('uiContext', uiContext);
     });
diff --git a/entry/src/main/ets/pages/Index.ets b/entry/src/main/ets/pages/Index.ets
index 3e51a752cf208f97b4105a3996706ff208b951f8..be21325b971a3b23a91622e900903e7705a77eb1 100644
--- a/entry/src/main/ets/pages/Index.ets
+++ b/entry/src/main/ets/pages/Index.ets
@@ -37,7 +37,7 @@ struct Index {
   private webWidth: number = 0;
   private webHeight: number = 0;
   private windowClass: window.Window | null = null;
-  private context: common.UIAbilityContext = getContext(this) as common.UIAbilityContext;
+  private context: common.UIAbilityContext = this.getUIContext().getHostContext() as common.UIAbilityContext;
   private manager: WebDownloadManager = WebDownloadManager.getInstance();
   private ctx: UIContext = this.getUIContext();
   private options: promptAction.BaseDialogOptions = {
@@ -123,8 +123,8 @@ struct Index {
             return false;
           }
           this.result = event.result;
-          this.pressPosX = px2vp(event.param.x());
-          this.pressPosY = px2vp(event.param.y());
+          this.pressPosX = this.getUIContext().px2vp(event.param.x());
+          this.pressPosY = this.getUIContext().px2vp(event.param.y());
           this.linkUrl = event.param.getSourceUrl();
           this.isShow = true;
           return true;
diff --git a/entry/src/main/ets/utils/CustomFunction.ets b/entry/src/main/ets/utils/CustomFunction.ets
index 75499565666c798b9acf42b39dbdd85e4ffeb5f1..5164e4311f6d35163e6a8f072d6a933b8ca62b87 100644
--- a/entry/src/main/ets/utils/CustomFunction.ets
+++ b/entry/src/main/ets/utils/CustomFunction.ets
@@ -13,7 +13,6 @@
  * limitations under the License.
  */
 
-import { promptAction } from '@kit.ArkUI';
 import { common, Want } from '@kit.AbilityKit';
 import { pasteboard } from '@kit.BasicServicesKit';
 import { fileIo as fs, picker } from '@kit.CoreFileKit';
@@ -22,6 +21,7 @@ import { WebDownloadManager } from './WebDownloadManager';
 import { hilog } from '@kit.PerformanceAnalysisKit';
 const uiContext: UIContext | undefined = AppStorage.get('uiContext');
 
+const uiContext: UIContext | undefined = AppStorage.get('uiContext');
 /**
  * Copies a URI to the system clipboard.
  *
@@ -35,7 +35,7 @@ export function copyLink(uri: string) {
       hilog.error(0x000, Constants.TAG, JSON.stringify(err));
       return;
     }
-    uiContext!.getPromptAction().showToast({
+    uiContext?.getPromptAction().showToast({
       message: $r('app.string.copy_success')
     })
   })
@@ -61,14 +61,14 @@ export async function saveVideoToGallery(
   let documentPicker = new picker.DocumentViewPicker(context);
   documentPicker.save(documentSaveOptions).then(async (uris: Array<string>) => {
     if (uris.length === 0) {
-      uiContext!.getPromptAction().showToast({ message: $r('app.string.user_cancelled_authorization') })
+      uiContext?.getPromptAction().showToast({ message: $r('app.string.user_cancelled_authorization') })
       return;
     }
     openDownloadDialog(); // open dialog
     const path = await webDownloadManager.start(Constants.INDEX_WEB_CONTROLLER, context.filesDir, uri);
     closeDownloadDialog(); // close dialog
     webDownloadManager.clearProgress();
-    uiContext!.getPromptAction().showToast({ message: $r('app.string.download_success') })
+    uiContext?.getPromptAction().showToast({ message: $r('app.string.download_success') })
     const targetFile = fs.openSync(uris[0], fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
     const sourceFile = fs.openSync(path, fs.OpenMode.READ_ONLY);
     let buf = new ArrayBuffer(1024);