/
ClusteringDemoActivity.java
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/
ClusteringDemoActivity.java
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/*
* Copyright 2023 Google Inc.
*
* 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.maps.android.utils.demo;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.maps.android.clustering.ClusterManager;
import com.google.maps.android.utils.demo.model.MyItem;
import org.json.JSONException;
import java.io.InputStream;
import java.util.List;
import androidx.annotation.NonNull;
/**
* Simple activity demonstrating ClusterManager.
*/
public class ClusteringDemoActivity extends BaseDemoActivity {
private ClusterManager<MyItem> mClusterManager;
@Override
protected void startDemo(boolean isRestore) {
if (!isRestore) {
getMap().moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(51.503186, -0.126446), 10));
}
mClusterManager = new ClusterManager<>(this, getMap());
getMap().setOnCameraIdleListener(mClusterManager);
// Add a custom InfoWindowAdapter by setting it to the MarkerManager.Collection object from
// ClusterManager rather than from GoogleMap.setInfoWindowAdapter
mClusterManager.getMarkerCollection().setInfoWindowAdapter(new GoogleMap.InfoWindowAdapter() {
@Override
public View getInfoWindow(@NonNull Marker marker) {
final LayoutInflater inflater = LayoutInflater.from(ClusteringDemoActivity.this);
final View view = inflater.inflate(R.layout.custom_info_window, null);
final TextView textView = view.findViewById(R.id.textViewTitle);
String text = (marker.getTitle() != null) ? marker.getTitle() : "Cluster Item";
textView.setText(text);
return view;
}
@Override
public View getInfoContents(@NonNull Marker marker) {
return null;
}
});
mClusterManager.setOnClusterItemInfoWindowLongClickListener(marker ->
Toast.makeText(ClusteringDemoActivity.this,
"Info window clicked.",
Toast.LENGTH_SHORT).show());
mClusterManager.setOnClusterItemInfoWindowLongClickListener(marker ->
Toast.makeText(ClusteringDemoActivity.this,
"Info window long pressed.",
Toast.LENGTH_SHORT).show());
try {
readItems();
} catch (JSONException e) {
Toast.makeText(this, "Problem reading list of markers.", Toast.LENGTH_LONG).show();
}
}
private void readItems() throws JSONException {
InputStream inputStream = getResources().openRawResource(R.raw.radar_search);
List<MyItem> items = new MyItemReader().read(inputStream);
mClusterManager.addItems(items);
}
}