diff --git a/entry/src/main/ets/entryability/EntryAbility.ets b/entry/src/main/ets/entryability/EntryAbility.ets
index 9c5a1393305885af2651f40104a0a8a841837bfe..0d332c6a5669c2e0bd3706139e08060a42206446 100644
--- a/entry/src/main/ets/entryability/EntryAbility.ets
+++ b/entry/src/main/ets/entryability/EntryAbility.ets
@@ -67,7 +67,13 @@ export default class EntryAbility extends UIAbility {
     windowStage.getMainWindow().then((windowObj: window.Window) => {
       windowObj.on('windowSizeChange', (windowSize) => {
         this.updateBreakpoint(windowSize.width);
-      })
+      });
+      windowObj.setWindowLayoutFullScreen(true).then(() => {
+        hilog.info(0x0000, TAG, `%{public}s`, 'Succeeded in setting the window layout to full-screen mode.');
+      }).catch((error: BusinessError) => {
+        hilog.error(0x0000, TAG, '%{public}s',
+          `UFailed to set the window layout to full-screen mode. code: ${error.code}, message: ${error.message}`);
+      });
     }).catch((error: BusinessError) => {
       hilog.error(0x0000, TAG, '%{public}s',
         `Failed to get main window. code: ${error.code}, message: ${error.message}`);
@@ -81,13 +87,6 @@ export default class EntryAbility extends UIAbility {
         return;
       }
       hilog.info(0x0000, TAG, '%{public}s', 'Succeeded in loading the content.');
-      let windowClass: window.Window = windowStage.getMainWindowSync();
-      windowClass.setWindowLayoutFullScreen(true).then(() => {
-        hilog.info(0x0000, TAG, `%{public}s`, 'Succeeded in setting the window layout to full-screen mode.');
-      }).catch((error: BusinessError) => {
-        hilog.error(0x0000, TAG, '%{public}s',
-          `UFailed to set the window layout to full-screen mode. code: ${error.code}, message: ${error.message}`);
-      });
     });
   }