首页，页面滑动顶导按钮联动，时机修改。减少时延。

@@ -113,9 +113,11 @@ export struct TopNavigationComponentNew {
           'middle': { 'anchor': '__container__', 'align': HorizontalAlign.Center },
           'bottom': { 'anchor': '__container__', 'align': VerticalAlign.Bottom }
         })
-        .onChange((index) => {
-          Logger.info(TAG, `onChange index : ${index}`);
-
+        .onAnimationStart((curIndex: number, index: number)=>{
+          Logger.info(TAG, `onAnimationStart ${curIndex} ${index}`);
+          if (curIndex === index) {
+            return
+          }
           if (this.isBroadcastByIndex(index)) {
             // 跳转到播报页面
             ProcessUtils.gotoBroadcastPage(this.myChannelList[index].pageId)
@@ -133,7 +135,12 @@ export struct TopNavigationComponentNew {
             this.currentTopNavSelectedIndex = index;
             this.changePage(this.currentTopNavSelectedIndex)
           }
-
+        })
+        // .onAnimationEnd((index: number)=>{
+        //   Logger.info(TAG, `onAnimationEnd ${index}`);
+        // })
+        .onChange((index) => {
+          Logger.info(TAG, `onChange index : ${index}`);
         })
       }
       .width('100%')