调整命名：CoordinatePropType => LatLng

components/Circle.js

 import React, {PropTypes, Component} from 'react'
 import {requireNativeComponent, View, PixelRatio} from 'react-native'
-import {CoordinatePropType} from './PropTypes'
+import {LatLng} from './PropTypes'
 
 class Circle extends Component {
   static propTypes = {
@@ -9,12 +9,12 @@ class Circle extends Component {
     /**
      * 圆点
      */
-    center: CoordinatePropType,
+    center: LatLng.isRequired,
 
     /**
      * 半径（米）
      */
-    radius: PropTypes.number,
+    radius: PropTypes.number.isRequired,
 
     strokeWidth: PropTypes.number,
     strokeColor: PropTypes.string,

components/MapView.js

@@ -5,6 +5,7 @@ import {
   View,
   UIManager,
 } from 'react-native'
+import {LatLng} from './PropTypes'
 import Marker from './Marker'
 import InfoWindow from './InfoWindow'
 import Overlay from './Overlay'
@@ -12,11 +13,6 @@ import Polyline from './Polyline'
 import Polygon from './Polygon'
 import Circle from './Circle'
 
-const CoordinatePropType = PropTypes.shape({
-  latitude: PropTypes.number.isRequired,
-  longitude: PropTypes.number.isRequired,
-})
-
 class MapView extends Component {
   static propTypes = {
     ...View.propTypes,
@@ -100,7 +96,7 @@ class MapView extends Component {
     /**
      * 设置中心坐标
      */
-    coordinate: CoordinatePropType,
+    coordinate: LatLng,
 
     /**
      * 设置倾斜角度，取值范围 [0, 60]

components/Marker.js

 import React, {PropTypes, Component} from 'react'
 import {requireNativeComponent, View, PixelRatio} from 'react-native'
-import {CoordinatePropType} from './PropTypes'
+import {LatLng} from './PropTypes'
 import InfoWindow from './InfoWindow'
 
 class Marker extends Component {
@@ -10,7 +10,7 @@ class Marker extends Component {
     /**
      * 坐标
      */
-    coordinate: CoordinatePropType.isRequired,
+    coordinate: LatLng.isRequired,
 
     /**
      * 标题

components/Polygon.js

 import React, {PropTypes, Component} from 'react'
 import {requireNativeComponent, View, PixelRatio} from 'react-native'
-import {CoordinatePropType} from './PropTypes'
+import {LatLng} from './PropTypes'
 
 class Polygon extends Component {
   static propTypes = {
     ...View.propTypes,
 
-    coordinates: PropTypes.arrayOf(CoordinatePropType).isRequired,
+    coordinates: PropTypes.arrayOf(LatLng).isRequired,
     strokeWidth: PropTypes.number,
     strokeColor: PropTypes.string,
     fillColor: PropTypes.string,

components/Polyline.js

 import React, {PropTypes, Component} from 'react'
 import {processColor, requireNativeComponent, View, PixelRatio} from 'react-native'
-import {CoordinatePropType} from './PropTypes'
+import {LatLng} from './PropTypes'
 
 class Polyline extends Component {
   static propTypes = {
     ...View.propTypes,
 
-    coordinates: PropTypes.arrayOf(CoordinatePropType).isRequired,
+    coordinates: PropTypes.arrayOf(LatLng).isRequired,
     width: PropTypes.number,
     color: PropTypes.string,
     zIndex: PropTypes.number,

components/PropTypes.js

 import {PropTypes} from 'react'
 
-const CoordinatePropType = PropTypes.shape({
+const LatLng = PropTypes.shape({
   latitude: PropTypes.number.isRequired,
   longitude: PropTypes.number.isRequired,
 })
 
-export {CoordinatePropType}
+export {LatLng}