category 数据上班优化 review by liben

@@ -61,6 +61,7 @@ class CategoryBContainer extends Component {
         this.subscription = NativeAppEventEmitter.addListener(
             'ChannelDidChangeEvent',
             (reminder) => {
+                this.props.actions.setPerloadStatus(true);    
                 let id = reminder.channel;
                 let value;
                 if(id == 2){
@@ -97,14 +98,7 @@ class CategoryBContainer extends Component {
 
     _onSelectChannel(channel) {
         this.props.actions.setCurrentChannelB(channel.id, channel.value);
-
-        let list = this.props.categoryB.categoryList.get(channel.value);
-        if (!list || list.size == 0) {
-            return;
-        }
-
-        let category = list.get(0);
-        category && this._onSelectCategory(category.toJS());
+        this.props.actions.getCategoryBFirstSubCategoryDetail();
     }
 
     _onSelectCategory(category) {