Android GPS enable by programmatically

--------------------------------MainActivity----------------------------------





import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.PackageManager;
import android.location.Location;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallback;
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.LocationSettingsStatusCodes;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener,
        LocationListener{
    private TextView latitudeTextView,longitudeTextView;
    private Location mylocation;
    private GoogleApiClient googleApiClient;
    private final static int REQUEST_CHECK_SETTINGS_GPS=0x1;
    private final static int REQUEST_ID_MULTIPLE_PERMISSIONS=0x2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        latitudeTextView=(TextView)findViewById(R.id.latitudeTextView);
        longitudeTextView=(TextView)findViewById(R.id.longitudeTextView);
        setUpGClient();
    }

    private synchronized void setUpGClient() {
        googleApiClient = new GoogleApiClient.Builder(this)
                .enableAutoManage(this, 0, this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
        googleApiClient.connect();
    }

    @Override
        public void onLocationChanged(Location location) {
        mylocation = location;
        if (mylocation != null) {
            Double latitude=mylocation.getLatitude();
            Double longitude=mylocation.getLongitude();
            latitudeTextView.setText("Latitude : "+latitude);
            longitudeTextView.setText("Longitude : "+longitude);
            //Or Do whatever you want with your location
        }
    }

    @Override
    public void onConnected(Bundle bundle) {
        checkPermissions();
    }

    @Override
    public void onConnectionSuspended(int i) {
        //Do whatever you need
        //You can display a message here
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        //You can display a message here
    }

    private void getMyLocation(){
        if(googleApiClient!=null) {
            if (googleApiClient.isConnected()) {
                int permissionLocation = ContextCompat.checkSelfPermission(MainActivity.this,
                        Manifest.permission.ACCESS_FINE_LOCATION);
                if (permissionLocation == PackageManager.PERMISSION_GRANTED) {
                    mylocation =                     LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
                    LocationRequest locationRequest = new LocationRequest();
                    locationRequest.setInterval(3000);
                    locationRequest.setFastestInterval(3000);
                    locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
                    LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                            .addLocationRequest(locationRequest);
                    builder.setAlwaysShow(true);
                    LocationServices.FusedLocationApi
                            .requestLocationUpdates(googleApiClient, locationRequest, this);
                    PendingResult<LocationSettingsResult> result =
                            LocationServices.SettingsApi
                                    .checkLocationSettings(googleApiClient, builder.build());
                    result.setResultCallback(new ResultCallback<LocationSettingsResult>() {

                        @Override
                        public void onResult(LocationSettingsResult result) {
                            final Status status = result.getStatus();
                            switch (status.getStatusCode()) {
                                case LocationSettingsStatusCodes.SUCCESS:
                                    // All location settings are satisfied.
                                    // You can initialize location requests here.
                                    int permissionLocation = ContextCompat
                                            .checkSelfPermission(MainActivity.this,
                                            Manifest.permission.ACCESS_FINE_LOCATION);
                                    if (permissionLocation == PackageManager.PERMISSION_GRANTED) {
                                        mylocation = LocationServices.FusedLocationApi
                                                .getLastLocation(googleApiClient);
                                    }
                                    break;
                                case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                                    // Location settings are not satisfied.
                                    // But could be fixed by showing the user a dialog.
                                    try {
                                        // Show the dialog by calling startResolutionForResult(),
                                        // and check the result in onActivityResult().
                                        // Ask to turn on GPS automatically
                                        status.startResolutionForResult(MainActivity.this,
                                                REQUEST_CHECK_SETTINGS_GPS);
                                    } 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.
                                    // finish();
                                    break;
                            }
                        }
                    });
                }
            }
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch (requestCode) {
            case REQUEST_CHECK_SETTINGS_GPS:
                switch (resultCode) {
                    case Activity.RESULT_OK:
                        getMyLocation();
                        break;
                    case Activity.RESULT_CANCELED:
                        finish();
                        break;
                }
                break;
        }
    }

    private void checkPermissions(){
        int permissionLocation = ContextCompat.checkSelfPermission(MainActivity.this,
                android.Manifest.permission.ACCESS_FINE_LOCATION);
        List<String> listPermissionsNeeded = new ArrayList<>();
        if (permissionLocation != PackageManager.PERMISSION_GRANTED) {
            listPermissionsNeeded.add(android.Manifest.permission.ACCESS_FINE_LOCATION);
            if (!listPermissionsNeeded.isEmpty()) {
                ActivityCompat.requestPermissions(this,
                        listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]), REQUEST_ID_MULTIPLE_PERMISSIONS);
            }
        }else{
            getMyLocation();
        }

    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
        int permissionLocation = ContextCompat.checkSelfPermission(MainActivity.this,
                Manifest.permission.ACCESS_FINE_LOCATION);
        if (permissionLocation == PackageManager.PERMISSION_GRANTED) {
            getMyLocation();
        }
    }
}









 

---------------------activity_main.xml------------------------------------

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="20dp">

    <TextView
        android:layout_width="match_parent"
        android:textColor="#000000"
        android:gravity="center"
        android:textSize="20sp"
        android:layout_height="wrap_content"
        android:text="My Location" />
    <TextView
        android:layout_marginTop="10dp"
        android:textSize="18sp"
        android:id="@+id/latitudeTextView"
        android:text="Latitude : "
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <TextView
        android:layout_marginTop="10dp"
        android:textSize="18sp"
        android:id="@+id/longitudeTextView"
        android:text="Longitude :"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>


---------------------androidmanifest.xml-------------------------------

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.loggedshirsh.testapplication">
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-feature
        android:name="android.hardware.location.gps"
        android:required="true" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>



---------------------build.gradle(app)------------------------------------

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.google.android.gms:play-services-location:10.0.1'
    compile 'com.android.support:appcompat-v7:25.0.1'
}

apply plugin: 'com.google.gms.google-services'