Java tutorial
/* * Copyright 2016 Google Inc. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.google.samples.apps.ourstreets.map; import android.content.Context; import android.graphics.drawable.Drawable; import android.support.annotation.NonNull; import android.support.v4.content.ContextCompat; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.model.BitmapDescriptor; import com.google.android.gms.maps.model.MarkerOptions; import com.google.maps.android.clustering.Cluster; import com.google.maps.android.clustering.ClusterManager; import com.google.maps.android.clustering.view.DefaultClusterRenderer; import com.google.samples.apps.ourstreets.R; import com.google.samples.apps.ourstreets.model.Detail; import com.google.samples.apps.ourstreets.view.ViewUtils; /** * Custom renderer to use the app's styled markers. */ public final class DetailMarkerRenderer extends DefaultClusterRenderer<Detail> { private static final int MIN_CLUSTER_SIZE = 10; private BitmapDescriptor mMapPin; private Drawable mMarkerDrawable; public DetailMarkerRenderer(Context context, final GoogleMap map, final ClusterManager<Detail> clusterManager) { super(context, map, clusterManager); mMarkerDrawable = ContextCompat.getDrawable(context, R.drawable.map_pin); map.setInfoWindowAdapter(clusterManager.getMarkerManager()); } @Override protected void onBeforeClusterItemRendered(Detail item, MarkerOptions options) { options.icon(getMapPin()); } @Override protected boolean shouldRenderAsCluster(Cluster<Detail> cluster) { return cluster.getSize() > MIN_CLUSTER_SIZE; } @NonNull private BitmapDescriptor getMapPin() { if (mMapPin == null) { mMapPin = ViewUtils.getBitmapDescriptorFromDrawable(mMarkerDrawable); } return mMapPin; } }