/
LocationSourceDemoActivity.java
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/
LocationSourceDemoActivity.java
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// Copyright 2020 Google LLC
//
// 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.example.mapdemo;
import android.Manifest.permission;
import android.annotation.SuppressLint;
import android.content.pm.PackageManager;
import androidx.core.app.ActivityCompat;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMapLongClickListener;
import com.google.android.gms.maps.LocationSource;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import android.location.Location;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
/**
* This shows how to use a custom location source.
*/
public class LocationSourceDemoActivity extends AppCompatActivity implements OnMapReadyCallback {
/**
* A {@link LocationSource} which reports a new location whenever a user long presses the map
* at
* the point at which a user long pressed the map.
*/
private static class LongPressLocationSource implements LocationSource, OnMapLongClickListener {
private OnLocationChangedListener mListener;
/**
* Flag to keep track of the activity's lifecycle. This is not strictly necessary in this
* case because onMapLongPress events don't occur while the activity containing the map is
* paused but is included to demonstrate best practices (e.g., if a background service were
* to be used).
*/
private boolean mPaused;
@Override
public void activate(OnLocationChangedListener listener) {
mListener = listener;
}
@Override
public void deactivate() {
mListener = null;
}
@Override
public void onMapLongClick(LatLng point) {
if (mListener != null && !mPaused) {
Location location = new Location("LongPressLocationProvider");
location.setLatitude(point.latitude);
location.setLongitude(point.longitude);
location.setAccuracy(100);
mListener.onLocationChanged(location);
}
}
public void onPause() {
mPaused = true;
}
public void onResume() {
mPaused = false;
}
}
private LongPressLocationSource mLocationSource;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.basic_demo);
mLocationSource = new LongPressLocationSource();
SupportMapFragment mapFragment =
(SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
@Override
protected void onResume() {
super.onResume();
mLocationSource.onResume();
}
@Override
protected void onPause() {
super.onPause();
mLocationSource.onPause();
}
@SuppressLint("MissingPermission")
@Override
public void onMapReady(GoogleMap map) {
map.setLocationSource(mLocationSource);
map.setOnMapLongClickListener(mLocationSource);
if (ActivityCompat.checkSelfPermission(this, permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(this, permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
return;
}
map.setMyLocationEnabled(true);
}
}