In this article i'll continue google maps into your android application and adding current location using Google Api Client with Location listener using Fuse Api.
Here i'll be handling Android runtime permission to enable Fine location permission for Fetching current location of users running 6.0 or above.
Location dialog will also be available to prompt user to enable location services so that fuse api can fetch the user's current location.
1. Add latest google play services dependency to your module gradle for eg :
2. Add Api keys and google play services version to the manifest file.
Download the full source code from : Android Google Maps Demo Link
Cheers!!
Here i'll be handling Android runtime permission to enable Fine location permission for Fetching current location of users running 6.0 or above.
Location dialog will also be available to prompt user to enable location services so that fuse api can fetch the user's current location.
1. Add latest google play services dependency to your module gradle for eg :
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:25.0.0'
compile 'com.google.android.gms:play-services:10.2.0'
}
2. Add Api keys and google play services version to the manifest file.
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="kamal.com.androidv2mapsdemo"> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MapsActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <!--Defining Map Configs here. Including Google play services version and Map Key--> <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" /> <meta-data android:name="com.google.android.geo.API_KEY" android:value="Your Api key" /> </application> </manifest>3. Add a container to add map on runtime in Xml layout.
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/activity_maps" android:layout_width="match_parent" android:layout_height="match_parent"> <!-- The map fragments will go here --> <RelativeLayout android:id="@+id/map_container" android:layout_width="match_parent" android:layout_height="match_parent"></RelativeLayout> </RelativeLayout>4. MapsActivity to inflate map.
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentManager;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallbacks;
import com.google.android.gms.common.api.Status;
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.location.LocationSettingsRequest;
import com.google.android.gms.location.LocationSettingsResult;
import com.google.android.gms.location.LocationSettingsStates;
import com.google.android.gms.location.LocationSettingsStatusCodes;
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.MarkerOptions;
public class MapsActivity extends AppCompatActivity implements
OnMapReadyCallback , GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
private GoogleMap googleMap;
private SupportMapFragment fragment;
private GoogleApiClient mGoogleApiClient;
/**
* The desired interval for location updates. Inexact. Updates may be more or less frequent.
*/
public static final long UPDATE_INTERVAL_IN_MILLISECONDS = 10000;
/**
* The fastest rate for active location updates. Exact. Updates will never be more frequent
* than this value.
*/
public static final long FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS =
UPDATE_INTERVAL_IN_MILLISECONDS / 2;
/**
* Stores parameters for requests to the FusedLocationProviderApi.
*/
protected LocationRequest mLocationRequest;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
setupDynamicMapFragment();
if(checkGooglePlayServicesAvailable())
initializeMap();
}
private void setupDynamicMapFragment() {
FragmentManager fm = this.getSupportFragmentManager();
fragment = (SupportMapFragment) fm.findFragmentById(R.id.map_container);
if (fragment == null) {
fragment = SupportMapFragment.newInstance();
fm.beginTransaction().replace(R.id.map_container, fragment).commit();
}
}
/**
* function to load map. If map is not created it will create it for you
*/
private void initializeMap() {
if (googleMap == null) {
fragment.getMapAsync(this);
}
}
@Override
public void onMapReady(GoogleMap googleMap) {
this.googleMap=googleMap;
if (googleMap != null) {
googleMap.getUiSettings().setMapToolbarEnabled(false);
if (Build.VERSION.SDK_INT < 23) {
googleMap.setMyLocationEnabled(true);
buildGoogleApiClient();
}else{
checkFineLocationPermission();
}
}
}
protected synchronized void buildGoogleApiClient() {
Toast.makeText(this,"buildGoogleApiClient", Toast.LENGTH_SHORT).show();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
/**
* Check whether Google Play Services are available.
*
* If not, then display dialog allowing user to update Google Play Services
*
* @return true if available, or false if not
*/
private boolean checkGooglePlayServicesAvailable( )
{
GoogleApiAvailability googleAPI = GoogleApiAvailability.getInstance();
final int status = googleAPI.isGooglePlayServicesAvailable(this);
if (status == ConnectionResult.SUCCESS)
{
return true;
}
Log.e("", "Google Play Services not available: " + GooglePlayServicesUtil.getErrorString(status));
if (googleAPI.isUserResolvableError(status))
{
final Dialog errorDialog = GooglePlayServicesUtil.getErrorDialog(status, this, 1);
if (errorDialog != null)
{
errorDialog.show();
}
}
return false;
}
@Override
public void onConnected(@Nullable Bundle bundle) {
Toast.makeText(this,"onConnected",Toast.LENGTH_SHORT).show();
//mLocationRequest.setSmallestDisplacement(0.1F); //1/10 meter
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(5000); //5 seconds
mLocationRequest.setFastestInterval(3000); //3 seconds
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(mLocationRequest);
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient,
builder.build());
result.setResultCallback(new ResultCallbacks<LocationSettingsResult>() {
@Override
public void onSuccess(@NonNull LocationSettingsResult result) {
final Status status = result.getStatus();
final LocationSettingsStates s= result.getLocationSettingsStates();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can
// initialize location requests here.
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, MapsActivity.this);
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied, but this can be fixed
// by showing the user a dialog.
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
status.startResolutionForResult(
MapsActivity.this,
100);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have no way
// to fix the settings so we won't show the dialog.
break;
}
}
@Override
public void onFailure(@NonNull Status status) {
Log.e("","");
try {
status.startResolutionForResult(MapsActivity.this, 100);
} catch (IntentSender.SendIntentException e) {
e.printStackTrace();
}
}
}) ;
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
@Override
public void onLocationChanged(Location location) {
//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));
googleMap.addMarker(markerOptions);
//move map camera
googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
googleMap.animateCamera(CameraUpdateFactory.zoomTo(5));
//stop location updates
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==100 ){
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
/**
* Write external Permission check
*/
private void checkFineLocationPermission(){
if ((ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION))
!= PackageManager.PERMISSION_GRANTED) {
// This condition checks whether user has earlier denied the permission or not just by clicking on deny in the permission dialog.
//Remember not on the never ask check box then deny in the permission dialog
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
android.Manifest.permission.ACCESS_FINE_LOCATION)) {
/**
* Show an explanation to user why this permission in needed by us. Here using alert dialog to show the permission use.
*/
new AlertDialog.Builder(this)
.setTitle("Permission Required")
.setMessage("This permission was denied earlier by you. This permission is required to use card.")
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
ActivityCompat.requestPermissions(MapsActivity.this,
new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION},
4);
}
})
.setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
})
.setIcon(android.R.drawable.ic_dialog_alert)
.show();
} else {
//Just ask for the permission for first time. This block will come into play when user is trying to use feature which requires permission grant.
//So for the first time user will be into this else block. So just ask for the permission you need by showing default permission dialog
ActivityCompat.requestPermissions(MapsActivity.this,
new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION}, 4);
}
}else {
// If permission is already granted by user then we will be into this else block. So do whatever is required here
// Toast.makeText(this,"Permission Already granted",Toast.LENGTH_LONG).show();
googleMap.setMyLocationEnabled(true);
buildGoogleApiClient();
}
}
/**
* This method will be invoked when user allows or deny's a permission from the permission dialog so take actions accordingly.
* @param requestCode : returns requestCode
* @param permissions : returns permissions
* @param grantResults : returns grantResults
*/
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case 4:
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
googleMap.setMyLocationEnabled(true);
buildGoogleApiClient();
} else {
String permission = permissions[0];
boolean showRationale = ActivityCompat.shouldShowRequestPermissionRationale(this, permission);
if (!showRationale) {
//We will be in this block when User has ticked the never show dialog and denied the permission from the permission dialog
//Here we can not request the permission again if user has denied the permission with never ask option enabled.
//Only way is to show a imfo dialog and ask user to grant the permission from settings.
Toast.makeText(this, "Write Storage Permission Denied with never show options." +
"Please manually enable the permission and re-start the app to use this feature.",
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "Write Storage Permission Denied", Toast.LENGTH_LONG).show();
}
}
break;
default:
}
}
}
Now you can see users current location on google maps.
Download the full source code from : Android Google Maps Demo Link
Cheers!!
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