[add] Image 'prefetch' and 'getSize' statics

Fix #160

examples/components/Image/ImageExample.js

@@ -28,10 +28,9 @@ import { ActivityIndicator, Image, Platform, StyleSheet, Text, View } from 'reac
 var base64Icon = 'data:image/png;base64,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';
 
 //var ImageCapInsetsExample = require('./ImageCapInsetsExample');
-//const IMAGE_PREFETCH_URL = 'http://facebook.github.io/origami/public/images/blog-hero.jpg?r=1&t=' + Date.now();
-//var prefetchTask = Image.prefetch(IMAGE_PREFETCH_URL);
+const IMAGE_PREFETCH_URL = 'http://origami.design/public/images/bird-logo.png?r=1&t=' + Date.now();
+var prefetchTask = Image.prefetch(IMAGE_PREFETCH_URL);
 
-/*
 var NetworkImageCallbackExample = React.createClass({
   getInitialState: function() {
     return {
@@ -88,7 +87,6 @@ var NetworkImageCallbackExample = React.createClass({
     });
   }
 });
-*/
 
 var NetworkImageExample = React.createClass({
   getInitialState: function() {
@@ -118,7 +116,6 @@ var NetworkImageExample = React.createClass({
   }
 });
 
-/*
 var ImageSizeExample = React.createClass({
   getInitialState: function() {
     return {
@@ -133,24 +130,25 @@ var ImageSizeExample = React.createClass({
   },
   render: function() {
     return (
-      <View style={{flexDirection: 'row'}}>
-        <Image
-          style={{
-            width: 60,
-            height: 60,
-            backgroundColor: 'transparent',
-            marginRight: 10,
-          }}
-          source={this.props.source} />
+      <View>
         <Text>
           Actual dimensions:{'\n'}
-          Width: {this.state.width}, Height: {this.state.height}
+          width: {this.state.width}, height: {this.state.height}
         </Text>
+        <Image
+          source={this.props.source}
+          style={{
+            backgroundColor: '#eee',
+            height: 227,
+            marginTop: 10,
+            width: 323
+          }}
+        />
       </View>
     );
   },
 });
-*/
+
 /*
 var MultipleSourcesExample = React.createClass({
   getInitialState: function() {
@@ -239,17 +237,17 @@ const examples = [
       );
     },
   },
-  /*
   {
     title: 'Image Loading Events',
     render: function() {
       return (
-        <NetworkImageCallbackExample source={{uri: 'http://facebook.github.io/origami/public/images/blog-hero.jpg?r=1&t=' + Date.now()}}
-          prefetchedSource={{uri: IMAGE_PREFETCH_URL}}/>
+        <NetworkImageCallbackExample
+          source={{uri: 'http://origami.design/public/images/bird-logo.png?r=1&t=' + Date.now()}}
+          prefetchedSource={{uri: IMAGE_PREFETCH_URL}}
+        />
       );
     },
   },
-  */
   {
     title: 'Error Handler',
     render: function() {
@@ -263,7 +261,7 @@ const examples = [
     title: 'Image Download Progress',
     render: function() {
       return (
-        <NetworkImageExample source={{uri: 'http://facebook.github.io/origami/public/images/blog-hero.jpg?r=1'}}/>
+        <NetworkImageExample source={{uri: 'http://origami.design/public/images/bird-logo.png?r=1'}}/>
       );
     },
     platform: 'ios',
@@ -567,14 +565,12 @@ const examples = [
     platform: 'ios',
   },
   */
-  /*
   {
     title: 'Image Size',
     render: function() {
-      return <ImageSizeExample source={fullImage} />;
+      return <ImageSizeExample source={{ uri: 'https://upload.wikimedia.org/wikipedia/commons/d/d7/Chestnut-mandibled_Toucan.jpg' }} />;
     },
   },
-  */
   /*
   {
     title: 'MultipleSourcesExample',