Add Android code to the 0.11-stable branch.

Cherry-picked https://github.com/facebook/react-native/commit/42eb5464fd8a65ed84b799de5d4dc225349449be

Examples/UIExplorer/ToastAndroidExample.android.js

@@ -0,0 +1,68 @@
+/**
+ * The examples provided by Facebook are for non-commercial testing and
+ * evaluation purposes only.
+ *
+ * Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * @flow
+ */
+'use strict';
+
+var React = require('react-native');
+var {
+  StyleSheet,
+  Text,
+  ToastAndroid,
+  TouchableWithoutFeedback
+} = React;
+
+var UIExplorerBlock = require('UIExplorerBlock');
+var UIExplorerPage = require('UIExplorerPage');
+
+var ToastExample = React.createClass({
+
+  statics: {
+    title: 'Toast Example',
+    description: 'Toast Example',
+  },
+
+  getInitialState: function() {
+    return {};
+  },
+
+  render: function() {
+    return (
+      <UIExplorerPage title="ToastAndroid">
+        <UIExplorerBlock title="Simple toast">
+          <TouchableWithoutFeedback
+            onPress={() =>
+              ToastAndroid.show('This is a toast with short duration', ToastAndroid.SHORT)}>
+            <Text style={styles.text}>Click me.</Text>
+          </TouchableWithoutFeedback>
+        </UIExplorerBlock>
+        <UIExplorerBlock title="Toast with long duration">
+          <TouchableWithoutFeedback
+            onPress={() =>
+              ToastAndroid.show('This is a toast with long duration', ToastAndroid.LONG)}>
+            <Text style={styles.text}>Click me too.</Text>
+          </TouchableWithoutFeedback>
+        </UIExplorerBlock>
+      </UIExplorerPage>
+    );
+  },
+});
+
+var styles = StyleSheet.create({
+  text: {
+    color: 'black',
+  },
+});
+
+module.exports = ToastExample;