修复验收问题。reviewed by 凯总

@@ -27,7 +27,7 @@ export default class CategoryList extends Component {
         this.dataSource = new ListView.DataSource({rowHasChanged: (r1, r2) => !immutable.is(r1, r2)});
         this.subRenderRow = this.subRenderRow.bind(this);
         this.state = {
-            offsetx: 0,
+            offsetx: -width/2,
         };
         this.cacheChannel='';
     }
@@ -38,7 +38,7 @@ export default class CategoryList extends Component {
 
     componentWillUpdate(nextProps,nextState){
         if(this.cacheChannel!=nextProps.currentChannelId){
-            this.setState({offsetx:0});
+            this.setState({offsetx:-width/2});
             this.refs.categoryList && this.refs.categoryList.scrollTo({x: 0, y: 0, animated: false});
             this.cacheChannel=nextProps.currentChannelId;
         }
@@ -53,7 +53,7 @@ export default class CategoryList extends Component {
       if(rowID==this.props.currentCateId){
           LayoutAnimation.configureNext(LayoutAnimation.Presets.easeInEaseOut);
           if(this.state.offsetx<0){
-             this.setState({offsetx:0});
+             this.setState({offsetx:-width/2});
           }else{
              this.setState({offsetx: -width/2});
           }
@@ -157,19 +157,19 @@ let styles = StyleSheet.create({
         flex: 1,
         flexDirection: 'row',
         width: width,
-        height: height - 156,
+        height: height - 106,
         backgroundColor: 'white',
     },
     contentContainer: {
         backgroundColor: 'white',
         width: width,
-        height: height - 156,
+        height: height - 106,
     },
     subContentContainer: {
         // position: 'absolute',
         backgroundColor: '#f4f4f4',
         width: width/2,
-        height: height - 156,
+        height: height - 106,
 
     },
     row: {