fix：解决 切换至版面返回时 页面空白问题

@@ -64,6 +64,8 @@ export struct TopNavigationComponent {
   @State indicatorLeftMargin: number = 0
   @State indicatorLeftMargin: number = 0
   @State indicatorWidth: number = 0
   @State indicatorWidth: number = 0
   private tabsWidth: number = 0
   private tabsWidth: number = 0
+  //定时器延时处理切换至版面、播报tab时 返回上一个tab
+  @State tabTimmer: number = 0
 
 
   topOrBottomNavChange() {
   topOrBottomNavChange() {
     if (this.currentBottomNavName === this.currentBottomNavInfo?.name) {
     if (this.currentBottomNavName === this.currentBottomNavInfo?.name) {
@@ -261,6 +263,9 @@ export struct TopNavigationComponent {
         })
         })
         .animationDuration(this.animationDuration)
         .animationDuration(this.animationDuration)
         .onChange((index: number) => {
         .onChange((index: number) => {
+          if(this.tabTimmer){
+            clearTimeout(this.tabTimmer)
+          }
           this.currentTopNavName =
           this.currentTopNavName =
             this._currentNavIndex === 0 ? this.myChannelList[index].name : this.topNavList[index].name
             this._currentNavIndex === 0 ? this.myChannelList[index].name : this.topNavList[index].name
           Logger.info(TAG, `onChange index : ${index}`);
           Logger.info(TAG, `onChange index : ${index}`);
@@ -272,11 +277,15 @@ export struct TopNavigationComponent {
           if (this.isBroadcast(this._currentNavIndex === 0 ? this.myChannelList[index] : this.topNavList[index])) {
           if (this.isBroadcast(this._currentNavIndex === 0 ? this.myChannelList[index] : this.topNavList[index])) {
             // 跳转到播报页面
             // 跳转到播报页面
             ProcessUtils.gotoBroadcastPage(this.myChannelList[index].pageId)
             ProcessUtils.gotoBroadcastPage(this.myChannelList[index].pageId)
-            this.tabsController.changeIndex(this.currentTopNavSelectedIndex)
+            this.tabTimmer = setTimeout(() => {
+              this.tabsController.changeIndex(this.currentTopNavSelectedIndex)
+            }, 500)
           }
           }
           if (this.isLayout(this._currentNavIndex === 0 ? this.myChannelList[index] : this.topNavList[index])) {
           if (this.isLayout(this._currentNavIndex === 0 ? this.myChannelList[index] : this.topNavList[index])) {
             ProcessUtils.gotoENewsPaper()
             ProcessUtils.gotoENewsPaper()
-            this.tabsController.changeIndex(this.currentTopNavSelectedIndex)
+            this.tabTimmer = setTimeout(() => {
+              this.tabsController.changeIndex(this.currentTopNavSelectedIndex)
+            }, 500)
           }
           }
         })
         })
         .onAnimationStart((index: number, targetIndex: number, event: TabsAnimationEvent) => {
         .onAnimationStart((index: number, targetIndex: number, event: TabsAnimationEvent) => {