消息中心融合修改 # review by 孙凯

@@ -12,6 +12,7 @@ import ReactNative, {
     InteractionManager,
     Platform,
     RefreshControl,
+    DeviceEventEmitter,
 } from 'react-native';
 
 import TimerMixin from 'react-timer-mixin';
@@ -29,7 +30,16 @@ export default class Message extends Component {
         });
     }
     componentDidMount() {
-        this.trigggePullToRefresh();
+          this.viewDidAppear = DeviceEventEmitter.addListener(
+            'VCDidAppear',
+            () => {
+                 this.trigggePullToRefresh();
+            }
+        );
+    }
+
+    componentWillUnmount() {
+        this.viewDidAppear && this.viewDidAppear.remove();
     }
 
     trigggePullToRefresh() {