Added support for custom color and image for map annotations

Summary: public

This diff extends RCTMap annotations with an `image` and `tintColor` property, which can be used to render completely custom pin graphics.

The tintColor applies to both regular pins and custom pin images, allowing you to provide varied pin colors without needing multiple graphic assets.

Reviewed By: fredliu

Differential Revision: D2685581

fb-gh-sync-id: c7cf0af5c90fd8d1e9b3fec4b89206440b47ba8f

Examples/UIExplorer/MapViewExample.js

@@ -149,9 +149,6 @@ var MapViewExample = React.createClass({
 
   getInitialState() {
     return {
-      mapRegion: null,
-      mapRegionInput: null,
-      annotations: null,
       isFirstLoad: true,
     };
   },
@@ -163,12 +160,12 @@ var MapViewExample = React.createClass({
           style={styles.map}
           onRegionChange={this._onRegionChange}
           onRegionChangeComplete={this._onRegionChangeComplete}
-          region={this.state.mapRegion || undefined}
-          annotations={this.state.annotations || undefined}
+          region={this.state.mapRegion}
+          annotations={this.state.annotations}
         />
         <MapRegionInput
           onChange={this._onRegionInputChanged}
-          region={this.state.mapRegionInput || undefined}
+          region={this.state.mapRegionInput}
         />
       </View>
     );
@@ -208,6 +205,114 @@ var MapViewExample = React.createClass({
 
 });
 
+var CalloutMapViewExample = React.createClass({
+
+  getInitialState() {
+    return {
+      isFirstLoad: true,
+    };
+  },
+
+  render() {
+    if (this.state.isFirstLoad) {
+      var onRegionChangeComplete = (region) => {
+        this.setState({
+          isFirstLoad: false,
+          annotations: [{
+            longitude: region.longitude,
+            latitude: region.latitude,
+            title: 'More Info...',
+            hasRightCallout: true,
+            onRightCalloutPress: () => {
+              alert('You Are Here');
+            },
+          }],
+        });
+      };
+    }
+
+    return (
+      <MapView
+        style={styles.map}
+        onRegionChangeComplete={onRegionChangeComplete}
+        region={this.state.mapRegion}
+        annotations={this.state.annotations}
+      />
+    );
+  },
+
+});
+
+var CustomPinColorMapViewExample = React.createClass({
+
+  getInitialState() {
+    return {
+      isFirstLoad: true,
+    };
+  },
+
+  render() {
+    if (this.state.isFirstLoad) {
+      var onRegionChangeComplete = (region) => {
+        this.setState({
+          isFirstLoad: false,
+          annotations: [{
+            longitude: region.longitude,
+            latitude: region.latitude,
+            title: 'You Are Purple',
+            tintColor: MapView.PinColors.PURPLE,
+          }],
+        });
+      };
+    }
+
+    return (
+      <MapView
+        style={styles.map}
+        onRegionChangeComplete={onRegionChangeComplete}
+        region={this.state.mapRegion}
+        annotations={this.state.annotations}
+      />
+    );
+  },
+
+});
+
+var CustomPinImageMapViewExample = React.createClass({
+
+  getInitialState() {
+    return {
+      isFirstLoad: true,
+    };
+  },
+
+  render() {
+    if (this.state.isFirstLoad) {
+      var onRegionChangeComplete = (region) => {
+        this.setState({
+          isFirstLoad: false,
+          annotations: [{
+            longitude: region.longitude,
+            latitude: region.latitude,
+            title: 'Thumbs Up!',
+            image: require('image!uie_thumb_big'),
+          }],
+        });
+      };
+    }
+
+    return (
+      <MapView
+        style={styles.map}
+        onRegionChangeComplete={onRegionChangeComplete}
+        region={this.state.mapRegion}
+        annotations={this.state.annotations}
+      />
+    );
+  },
+
+});
+
 var styles = StyleSheet.create({
   map: {
     height: 150,
@@ -249,5 +354,23 @@ exports.examples = [
     render() {
       return  <MapView style={styles.map} showsUserLocation={true} />;
     }
-  }
+  },
+  {
+    title: 'Callout example',
+    render() {
+      return  <CalloutMapViewExample style={styles.map} />;
+    }
+  },
+  {
+    title: 'Custom pin color',
+    render() {
+      return  <CustomPinColorMapViewExample style={styles.map} />;
+    }
+  },
+  {
+    title: 'Custom pin image',
+    render() {
+      return  <CustomPinImageMapViewExample style={styles.map} />;
+    }
+  },
 ];