add flag to let concurrent multiple infowindows to be shown

android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/views/MapView.java

@@ -240,6 +240,7 @@ public final class MapView extends FrameLayout {
     private boolean mZoomEnabled = true;
     private boolean mScrollEnabled = true;
     private boolean mRotateEnabled = true;
+    private boolean mAllowConcurrentMultipleOpenInfoWindows = false;
     private String mStyleUrl;
 
     //
@@ -1292,6 +1293,30 @@ public final class MapView extends FrameLayout {
         }
     }
 
+    //
+    // InfoWindows
+    //
+
+    /**
+     * Changes whether the map allows concurrent multiple infowindows to be shown.
+     *
+     * @param allow If true, map allows concurrent multiple infowindows to be shown.
+     */
+    @UiThread
+    public void setAllowConcurrentMultipleOpenInfoWindows(boolean allow) {
+        this.mAllowConcurrentMultipleOpenInfoWindows = allow;
+    }
+
+    /**
+     * Returns whether the map allows concurrent multiple infowindows to be shown.
+     *
+     * @return If true, map allows concurrent multiple infowindows to be shown.
+     */
+    @UiThread
+    public boolean isAllowConcurrentMultipleOpenInfoWindows() {
+        return this.mAllowConcurrentMultipleOpenInfoWindows;
+    }
+
     //
     // Debug
     //
@@ -2003,7 +2028,8 @@ public final class MapView extends FrameLayout {
 
     /**
      * Selects a marker. The selected marker will have it's info window opened.
-     * Any other open info windows will be closed.
+     * Any other open info windows will be closed unless isAllowConcurrentMultipleOpenInfoWindows()
+     * is true.
      * <p/>
      * Selecting an already selected marker will have no effect.
      *
@@ -2021,7 +2047,9 @@ public final class MapView extends FrameLayout {
         }
 
         // Need to deselect any currently selected annotation first
-        deselectMarker(marker);
+        if (!isAllowConcurrentMultipleOpenInfoWindows()) {
+            deselectMarkers();
+        }
 
         boolean handledDefaultClick = false;
         if (mOnMarkerClickListener != null) {

android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/InfoWindowActivity.java

@@ -35,6 +35,9 @@ public class InfoWindowActivity extends AppCompatActivity {
         mMapView.setAccessToken(ApiAccess.getToken(this));
         mMapView.onCreate(savedInstanceState);
 
+        // Enable to let concurrent multiple infowindows to be shown.
+        //mMapView.setAllowConcurrentMultipleOpenInfoWindows(true);
+
         mMapView.addMarker(new MarkerOptions()
                 .title("Intersection")
                 .snippet("H St NW with 15th St NW")

android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/InfoWindowAdapterActivity.java

@@ -64,6 +64,9 @@ public class InfoWindowAdapterActivity extends AppCompatActivity {
             }
         });
 
+        // Enable to let concurrent multiple infowindows to be shown.
+        //mMapView.setAllowConcurrentMultipleOpenInfoWindows(true);
+
         mMapView.addMarker(generateMarker("Andorra", 42.505777, 1.52529, "#F44336"));
         mMapView.addMarker(generateMarker("Luxembourg", 49.815273, 6.129583, "#3F51B5"));
         mMapView.addMarker(generateMarker("Monaco", 43.738418, 7.424616, "#673AB7"));