对react源码的需改，主要集中在数据曝光和下拉刷新，下拉刷新后面可以替换为RN提供的刷新模块

@@ -39,6 +39,8 @@ const requireNativeComponent = require('requireNativeComponent');
 const warning = require('fbjs/lib/warning');
 const resolveAssetSource = require('resolveAssetSource');
 
+const RCTScrollViewManager = require('NativeModules').ScrollViewManager;
+
 import type {NativeMethodsMixinType} from 'ReactNativeTypes';
 
 /**
@@ -467,7 +469,24 @@ const ScrollView = createReactClass({
       'always',
       'never',
     ]),
+
     /**
+
+     pull to refresh
+     */
+    enablePullToRefresh: PropTypes.bool,
+    isOnPullToRefresh: PropTypes.bool,
+    onRefreshData: PropTypes.func,
+    onFinishRefreshData: PropTypes.func,
+
+    /**
+
+     埋点
+     */
+    yh_exposureData: PropTypes.any,
+    yh_viewVisible: PropTypes.bool,
+
+      /**
      * When true, ScrollView will emit updateChildFrames data in scroll events,
      * otherwise will not compute or emit child frame data.  This only exists
      * to support legacy issues, `onLayout` should be used instead to retrieve
@@ -503,6 +522,24 @@ const ScrollView = createReactClass({
   _scrollAnimatedValueAttachment: (null: ?{detach: () => void}),
   _stickyHeaderRefs: (new Map(): Map<number, ScrollViewStickyHeader>),
   _headerLayoutYs: (new Map(): Map<string, number>),
+  yh_updateVisibleSubViews: function() {
+      RCTScrollViewManager.yh_updateVisibleSubViews(
+          ReactNative.findNodeHandle(this._scrollViewRef)
+      );
+  },
+
+  startPullToRefresh: function() {
+      RCTScrollViewManager.startPullToRefresh(
+          ReactNative.findNodeHandle(this._scrollViewRef)
+      );
+  },
+
+  stopPullToRefresh: function() {
+      RCTScrollViewManager.stopPullToRefresh(
+          ReactNative.findNodeHandle(this._scrollViewRef)
+      );
+  },
+
   getInitialState: function() {
     return {
       ...this.scrollResponderMixinGetInitialState(),

@@ -178,6 +178,8 @@ const TouchableHighlight = createReactClass({
      * @platform ios
      */
     tvParallaxProperties: PropTypes.object,
+
+    yh_exposureData: PropTypes.object,
   },
 
   mixins: [NativeMethodsMixin, Touchable.Mixin],
@@ -304,6 +306,7 @@ const TouchableHighlight = createReactClass({
     const child = React.Children.only(this.props.children);
     return (
       <View
+        yh_exposureData={this.props.yh_exposureData}
         accessible={this.props.accessible !== false}
         accessibilityLabel={this.props.accessibilityLabel}
         accessibilityComponentType={this.props.accessibilityComponentType}

@@ -139,6 +139,8 @@ var TouchableOpacity = createReactClass({
      * Apple TV parallax effects
      */
     tvParallaxProperties: PropTypes.object,
+
+    yh_exposureData: PropTypes.object,
   },
 
   getDefaultProps: function() {
@@ -243,6 +245,7 @@ var TouchableOpacity = createReactClass({
   render: function() {
     return (
       <Animated.View
+        yh_exposureData={this.props.yh_exposureData}
         accessible={this.props.accessible !== false}
         accessibilityLabel={this.props.accessibilityLabel}
         accessibilityComponentType={this.props.accessibilityComponentType}

@@ -26,7 +26,7 @@ const requireNativeComponent = require('requireNativeComponent');
 
 import type {ViewProps} from 'ViewPropTypes';
 import type {ViewChildContext} from 'ViewContext';
-
+import PropTypes from 'prop-types';
 export type Props = ViewProps;
 
 /**
@@ -46,7 +46,13 @@ const View = createReactClass({
   // exists for DEV mode. However it's important for them to be declared.
   // If the object passed to `createClass` specifies `propTypes`, Flow will
   // create a static type from it.
-  propTypes: ViewPropTypes,
+  propTypes: {
+    yh_exposureData: PropTypes.object,
+
+    yh_viewVisible: PropTypes.bool,
+    
+    ...ViewPropTypes
+  },
 
   /**
    * `NativeMethodsMixin` will look for this when invoking `setNativeProps`. We

@@ -437,4 +437,10 @@ module.exports = {
    * See http://facebook.github.io/react-native/docs/view.html#needsoffscreenalphacompositing
    */
   needsOffscreenAlphaCompositing: PropTypes.bool,
+
+
+  yh_exposureData: PropTypes.object,
+
+  yh_viewVisible: PropTypes.bool,
+
 };

@@ -243,7 +243,13 @@ var ListView = createReactClass({
     enableEmptySections: PropTypes.bool,
   },
 
-  /**
+  yh_updateVisibleSubViews: function() {
+      if (this._scrollComponent && this._scrollComponent.yh_updateVisibleSubViews) {
+          this._scrollComponent.yh_updateVisibleSubViews();
+      }
+  },
+
+    /**
    * Exports some data, e.g. for perf investigations or analytics.
    */
   getMetrics: function() {
@@ -338,7 +344,7 @@ var ListView = createReactClass({
       renderScrollComponent: props => <ScrollView {...props} />,
       scrollRenderAheadDistance: DEFAULT_SCROLL_RENDER_AHEAD,
       onEndReachedThreshold: DEFAULT_END_REACHED_THRESHOLD,
-      stickySectionHeadersEnabled: Platform.OS === 'ios',
+      stickySectionHeadersEnabled: true,
       stickyHeaderIndices: [],
     };
   },

@@ -280,7 +280,13 @@ class SectionList<SectionT: SectionBase<any>> extends React.PureComponent<
     this._wrapperListRef.scrollToLocation(params);
   }
 
-  /**
+  setNativeProps(props: Object) {
+      if (this._wrapperListRef) {
+          this._wrapperListRef.setNativeProps(props);
+      }
+  }
+
+    /**
    * Tells the list an interaction has occurred, which should trigger viewability calculations, e.g.
    * if `waitForInteractions` is true and the user has not scrolled. This is typically called by
    * taps on items or by navigation actions.

@@ -141,7 +141,13 @@ class VirtualizedSectionList<SectionT: SectionBase> extends React.PureComponent<
 
   state: State;
 
-  static defaultProps: DefaultProps = {
+  setNativeProps(props: Object) {
+      if (this._listRef) {
+          this._listRef.setNativeProps(props);
+      }
+  }
+
+    static defaultProps: DefaultProps = {
     ...VirtualizedList.defaultProps,
     data: [],
   };