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- package com.androidtutorialpoint.googlemapsapp;
- import android.Manifest;
- import android.content.pm.PackageManager;
- import android.location.Location;
- import android.os.Build;
- import android.support.v4.app.ActivityCompat;
- import android.support.v4.app.FragmentActivity;
- import android.os.Bundle;
- import android.support.v4.content.ContextCompat;
- import android.widget.Toast;
- import com.google.android.gms.common.ConnectionResult;
- import com.google.android.gms.common.api.GoogleApiClient;
- import com.google.android.gms.location.LocationListener;
- import com.google.android.gms.location.LocationRequest;
- import com.google.android.gms.location.LocationServices;
- import com.google.android.gms.maps.CameraUpdateFactory;
- import com.google.android.gms.maps.GoogleMap;
- import com.google.android.gms.maps.OnMapReadyCallback;
- import com.google.android.gms.maps.SupportMapFragment;
- import com.google.android.gms.maps.model.BitmapDescriptorFactory;
- import com.google.android.gms.maps.model.LatLng;
- import com.google.android.gms.maps.model.Marker;
- import com.google.android.gms.maps.model.MarkerOptions;
- public class MapsActivity extends FragmentActivity implements OnMapReadyCallback,
- GoogleApiClient.ConnectionCallbacks,
- GoogleApiClient.OnConnectionFailedListener,
- LocationListener {
- private GoogleMap mMap;
- GoogleApiClient mGoogleApiClient;
- Location mLastLocation;
- Marker mCurrLocationMarker;
- LocationRequest mLocationRequest;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_maps);
- if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
- checkLocationPermission();
- }
- // Obtain the SupportMapFragment and get notified when the map is ready to be used.
- SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
- .findFragmentById(R.id.map);
- mapFragment.getMapAsync(this);
- }
- /**
- * Manipulates the map once available.
- * This callback is triggered when the map is ready to be used.
- * This is where we can add markers or lines, add listeners or move the camera. In this case,
- * we just add a marker near Sydney, Australia.
- * If Google Play services is not installed on the device, the user will be prompted to install
- * it inside the SupportMapFragment. This method will only be triggered once the user has
- * installed Google Play services and returned to the app.
- */
- @Override
- public void onMapReady(GoogleMap googleMap) {
- mMap = googleMap;
- mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
- //Initialize Google Play Services
- if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
- if (ContextCompat.checkSelfPermission(this,
- Manifest.permission.ACCESS_FINE_LOCATION)
- == PackageManager.PERMISSION_GRANTED) {
- buildGoogleApiClient();
- mMap.setMyLocationEnabled(true);
- }
- }
- else {
- buildGoogleApiClient();
- mMap.setMyLocationEnabled(true);
- }
- }
- protected synchronized void buildGoogleApiClient() {
- mGoogleApiClient = new GoogleApiClient.Builder(this)
- .addConnectionCallbacks(this)
- .addOnConnectionFailedListener(this)
- .addApi(LocationServices.API)
- .build();
- mGoogleApiClient.connect();
- }
- @Override
- public void onConnected(Bundle bundle) {
- mLocationRequest = new LocationRequest();
- mLocationRequest.setInterval(1000);
- mLocationRequest.setFastestInterval(1000);
- mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
- if (ContextCompat.checkSelfPermission(this,
- Manifest.permission.ACCESS_FINE_LOCATION)
- == PackageManager.PERMISSION_GRANTED) {
- LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
- }
- }
- @Override
- public void onConnectionSuspended(int i) {
- }
- @Override
- public void onLocationChanged(Location location) {
- mLastLocation = location;
- if (mCurrLocationMarker != null) {
- mCurrLocationMarker.remove();
- }
- //Place current location marker
- LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
- MarkerOptions markerOptions = new MarkerOptions();
- markerOptions.position(latLng);
- markerOptions.title("Current Position");
- markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
- mCurrLocationMarker = mMap.addMarker(markerOptions);
- //move map camera
- mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
- mMap.animateCamera(CameraUpdateFactory.zoomTo(11));
- //stop location updates
- if (mGoogleApiClient != null) {
- LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
- }
- }
- @Override
- public void onConnectionFailed(ConnectionResult connectionResult) {
- }
- public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
- public boolean checkLocationPermission(){
- if (ContextCompat.checkSelfPermission(this,
- Manifest.permission.ACCESS_FINE_LOCATION)
- != PackageManager.PERMISSION_GRANTED) {
- // Asking user if explanation is needed
- if (ActivityCompat.shouldShowRequestPermissionRationale(this,
- Manifest.permission.ACCESS_FINE_LOCATION)) {
- // Show an explanation to the user *asynchronously* -- don't block
- // this thread waiting for the user's response! After the user
- // sees the explanation, try again to request the permission.
- //Prompt the user once explanation has been shown
- ActivityCompat.requestPermissions(this,
- new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
- MY_PERMISSIONS_REQUEST_LOCATION);
- } else {
- // No explanation needed, we can request the permission.
- ActivityCompat.requestPermissions(this,
- new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
- MY_PERMISSIONS_REQUEST_LOCATION);
- }
- return false;
- } else {
- return true;
- }
- }
- @Override
- public void onRequestPermissionsResult(int requestCode,
- String permissions[], int[] grantResults) {
- switch (requestCode) {
- case MY_PERMISSIONS_REQUEST_LOCATION: {
- // If request is cancelled, the result arrays are empty.
- if (grantResults.length > 0
- && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
- // permission was granted. Do the
- // contacts-related task you need to do.
- if (ContextCompat.checkSelfPermission(this,
- Manifest.permission.ACCESS_FINE_LOCATION)
- == PackageManager.PERMISSION_GRANTED) {
- if (mGoogleApiClient == null) {
- buildGoogleApiClient();
- }
- mMap.setMyLocationEnabled(true);
- }
- } else {
- // Permission denied, Disable the functionality that depends on this permission.
- Toast.makeText(this, "permission denied", Toast.LENGTH_LONG).show();
- }
- return;
- }
- // other 'case' lines to check for other permissions this app might request.
- // You can add here other case statements according to your requirement.
- }
- }
- }
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