Add in support for showing annotation callouts by default without the user clicking on the pins

Reviewed By: mmmulani

Differential Revision: D4209555

fbshipit-source-id: 38c2459f9bec0dd2279cf673bcb22aef15748347

Libraries/Components/MapView/MapView.js

@@ -123,6 +123,13 @@ const MapView = React.createClass({
      */
     showsCompass: React.PropTypes.bool,
 
+    /**
+     * If `true` the map will show the callouts for all annotations without
+     * the user having to click on the annotation.
+     * Default value is `false`.
+     */
+    showsAnnotationCallouts: React.PropTypes.bool,
+
     /**
      * If `false` the user won't be able to pinch/zoom the map.
      * Default value is `true`.

React/Views/RCTMap.h

@@ -21,6 +21,7 @@ RCT_EXTERN const CGFloat RCTMapZoomBoundBuffer;
 
 @property (nonatomic, assign) BOOL followUserLocation;
 @property (nonatomic, assign) BOOL hasStartedRendering;
+@property (nonatomic, assign) BOOL showsAnnotationCallouts;
 @property (nonatomic, assign) CGFloat minDelta;
 @property (nonatomic, assign) CGFloat maxDelta;
 @property (nonatomic, assign) UIEdgeInsets legalLabelInsets;

React/Views/RCTMapManager.m

@@ -85,6 +85,7 @@ RCT_EXPORT_MODULE()
 RCT_EXPORT_VIEW_PROPERTY(showsUserLocation, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(showsPointsOfInterest, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(showsCompass, BOOL)
+RCT_EXPORT_VIEW_PROPERTY(showsAnnotationCallouts, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(followUserLocation, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(zoomEnabled, BOOL)
 RCT_EXPORT_VIEW_PROPERTY(rotateEnabled, BOOL)
@@ -289,6 +290,14 @@ RCT_CUSTOM_VIEW_PROPERTY(region, MKCoordinateRegion, RCTMap)
   return annotationView;
 }
 
+- (void)mapView:(RCTMap *)mapView didAddAnnotationViews:(NSArray *)views {
+  if (mapView.showsAnnotationCallouts) {
+    for (id<MKAnnotation> annotation in mapView.annotations) {
+      [mapView selectAnnotation:annotation animated:YES];
+    }
+  }
+}
+
 - (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>)overlay
 {
   RCTAssert([overlay isKindOfClass:[RCTMapOverlay class]], @"Overlay must be of type RCTMapOverlay");