Open GPS ต้องทำไง?

สวัสดีครับ วันนี้เราจะทำวิธีการเปิด GPS โดยการขออนุญาตจากผู้ใช้งาน เปิดไฟล์ Gradle Script/build.gradle(Module:app) แล้วเพิ่ม

compile 'com.google.android.gms:play-services-location:10.2.0'

เปิดไฟล์ java/MainActivity.java

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.content.Intent;
import android.content.IntentSender;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;
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.Result;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
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;
public class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, ResultCallback {
    protected GoogleApiClient mGoogleApiClient;
    protected LocationRequest locationRequest;
    int REQUEST_CHECK_SETTINGS = 100;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this).build();
        mGoogleApiClient.connect();
        locationRequest = LocationRequest.create();
        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        locationRequest.setInterval(30 * 1000);
        locationRequest.setFastestInterval(5 * 1000);
    }
    @Override
    public void onConnected(@Nullable Bundle bundle) {
        LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                .addLocationRequest(locationRequest);
        builder.setAlwaysShow(true);
        PendingResult result =
                LocationServices.SettingsApi.checkLocationSettings(
                        mGoogleApiClient,
                        builder.build()
                );
        result.setResultCallback(this);
    }
    @Override
    public void onConnectionSuspended(int i) {
    }
    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
    }
    @Override
    public void onResult(@NonNull Result result) {
        final Status status = result.getStatus();
        switch (status.getStatusCode()) {
            case LocationSettingsStatusCodes.SUCCESS:
                // NO need to show the dialog;
                break;
            case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                //  Location settings are not satisfied. Show the user a dialog
                try {
                    // Show the dialog by calling startResolutionForResult(), and check the result
                    // in onActivityResult().
                    status.startResolutionForResult(MainActivity.this, REQUEST_CHECK_SETTINGS);
                } catch (IntentSender.SendIntentException e) {
                    //failed to show
                }
                break;
            case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                // Location settings are unavailable so not possible to show any dialog now
                break;
        }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CHECK_SETTINGS) {
            if (resultCode == RESULT_OK) {
                Toast.makeText(getApplicationContext(), "GPS enabled", Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(getApplicationContext(), "GPS is not enabled", Toast.LENGTH_LONG).show();
            }
        }
    }
}

เพียงเท่านี้เราก็สามารถแจ้งผู้ใช้งานให้เปิด GPS ได้แล้ว และหากมีข้อสงสังสามารถคอมเมนต์ไว้ที่โพสต์ด้านล่างเลยครับ สำหรับวันนี้สวัสดีครับ