fix: MainPage.ets, 国殇代码容错处理

@@ -12,6 +12,7 @@ import { StartupManager } from '../startupmanager/StartupManager';
 import { BusinessError } from '@kit.BasicServicesKit';
 import { BusinessError } from '@kit.BasicServicesKit';
 import { BottomNavigationComponent } from './view/BottomNavigationComponent';
 import { BottomNavigationComponent } from './view/BottomNavigationComponent';
 import LaunchDataModel from './viewModel/LaunchDataModel';
 import LaunchDataModel from './viewModel/LaunchDataModel';
+import { LaunchPageModel } from './viewModel/LaunchPageModel';
 
 
 const TAG = 'MainPage';
 const TAG = 'MainPage';
 
 
@@ -44,15 +45,20 @@ struct MainPage {
     })
     })
 
 
     let dataModelStr : string = SPHelper.default.getSync(SpConstants.APP_LAUNCH_PAGE_DATA_MODEL,'') as string
     let dataModelStr : string = SPHelper.default.getSync(SpConstants.APP_LAUNCH_PAGE_DATA_MODEL,'') as string
-    if (dataModelStr) {
-      let dataModel : LaunchDataModel = JSON.parse(dataModelStr)
-      console.log(dataModelStr)
-      // 处理国殇模式数据
-      let mourns: mournsInfoModel = dataModel.mourns as mournsInfoModel
-      let GrayManage = new GrayManageModel()
-      GrayManage.setMourning(mourns)
-      AppStorage.setOrCreate('GrayManage', GrayManage)
+    if (!dataModelStr) {
+      //请求启动页相关接口数据并保存
+      let launchPageModel = new LaunchPageModel()
+      launchPageModel.getLaunchPageData()
+      dataModelStr = SPHelper.default.getSync(SpConstants.APP_LAUNCH_PAGE_DATA_MODEL,'') as string
+
     }
     }
+    let dataModel : LaunchDataModel = JSON.parse(dataModelStr)
+    console.log(dataModelStr)
+    // 处理国殇模式数据
+    let mourns: mournsInfoModel = dataModel.mourns as mournsInfoModel
+    let GrayManage = new GrayManageModel()
+    GrayManage.setMourning(mourns)
+    AppStorage.setOrCreate('GrayManage', GrayManage)
   }
   }
 
 
   pageTransition() {
   pageTransition() {