优化组件代码

components/Marker.js

-import React, {PropTypes, Component} from 'react'
+import React, {PropTypes, PureComponent} from 'react'
 import {
   requireNativeComponent,
   View,
@@ -9,7 +9,7 @@ import {
 import {LatLng} from './PropTypes'
 import Overlay from './Overlay'
 
-export default class Marker extends Component {
+export default class Marker extends PureComponent {
   static propTypes = {
     ...ViewPropTypes,
 

components/Polyline.js

@@ -65,13 +65,7 @@ export default class Polyline extends PureComponent {
     colors: [],
   }
 
-  _handle(name) {
-    return event => {
-      if (this.props[name]) {
-        this.props[name](event)
-      }
-    }
-  }
+  _onPress = event => this.props.onPress && this.props.onPress(event)
 
   render() {
     const props = {
@@ -82,7 +76,7 @@ export default class Polyline extends PureComponent {
           colors: this.props.colors.map(processColor),
         },
       }),
-      onPolylineClick: this._handle('onPress'),
+      onPolylineClick: this._onPress,
     }
     return <AMapPolyline {...props}/>
   }

example/src/examples/circle.js

 import React, {Component} from 'react'
-import {StyleSheet, View} from 'react-native'
+import {StyleSheet} from 'react-native'
 import {MapView, Circle} from 'react-native-amap3d'
 
 export default class CircleExample extends Component {