如何在我的android应用程序中获得一个手机GPS位置？

问题描述：

我想知道如何实现在一个手机上获取位置并显示手机位置。如何在我的android应用程序中获得一个手机GPS位置？

就像超级驾驶室应用程序。当我们要求从一个地方骑到另一个地方。他们为我们分配一辆出租车同时，应用程序还显示出租车司机的位置。我想知道他们如何实施，如果有人指导我们或为此提供相关文档。在此先感谢，它非常Appriciable

使用[这个链接]（http://stackoverflow.com/questions/1513485/how-do-i-get-the-current-gps-location-programmatically-in-android），有几个好的解决方案.. –

做一个更好的搜索，http://stackoverflow.com/questions/1513485/how-do-i-get-the-current-gps-location-programmatically-in-android http://stackoverflow.com /问题/ 17591147 /如何对获得电流定位功能于安卓 – rafaello

答

你这下面的代码跟踪定位事件

变化DeviceLocation.java

import android.app.Service; 
import android.content.Intent; 
import android.location.Location; 
import android.os.AsyncTask; 
import android.os.Handler; 
import android.os.IBinder; 
import android.util.Log; 

import com.google.android.gcm.server.Message; 
import com.google.android.gcm.server.Result; 
import com.google.android.gcm.server.Sender; 

import org.json.JSONException; 
import org.json.JSONObject; 

import java.io.IOException; 
import java.util.Timer; 
import java.util.TimerTask; 

public class DeviceLocation extends Service { 

    private GPSTracker gpsTracker; 
    private Handler handler = new Handler(); 
    private Timer timer = new Timer(); 
    private Distance pastDistance = new Distance(); 
    private Distance currentDistance = new Distance(); 
    public static double DISTANCE; 
    boolean flag = true; 
    private double totalDistance; 


    @Override 
    public int onStartCommand(Intent intent, int flags, int startId) { 
     super.onStartCommand(intent, flags, startId); 
     Log.v("Location1", "********* " + Thread.currentThread().getId()); 
     gpsTracker = new GPSTracker(this); 
// below code is to track change in past and present location events 
//  TimerTask timerTask = new TimerTask() { 
// 
//   @Override 
//   public void run() { 
//    Log.v("Location2", "********* " + Thread.currentThread().getId()); 
//    handler.post(new Runnable() { 
// 
//     @Override 
//     public void run() { 
//      Log.v("Location3", "********* " + Thread.currentThread().getId()); 
//      if (flag) { 
//       pastDistance.setLatitude(gpsTracker.getLocation().getLatitude()); 
//       pastDistance.setLongitude(gpsTracker.getLocation().getLongitude()); 
//       flag = false; 
//      } else { 
//       currentDistance.setLatitude(gpsTracker.getLocation().getLatitude()); 
//       currentDistance.setLongitude(gpsTracker.getLocation().getLongitude()); 
//       flag = comapre_LatitudeLongitude(); 
//      } 
//     } 
//    }); 
//   } 
//  }; 
//  timer.schedule(timerTask, 0, 5000); 

     TimerTask timerTask = new TimerTask() { 

      @Override 
      public void run() { 
       Log.v("Location2", "********* " + Thread.currentThread().getId()); 
       handler.post(new Runnable() { 

        @Override 
        public void run() { 
         // send to server or device you need to send via GCM 
SendMessage(String.valueOf(gpsTracker.getLocation().getLatitude()) 
String.valueOf(gpsTracker.getLocation().getLongitude())); 
        } 
       }); 
      } 
     }; 
     timer.schedule(timerTask, 0, 5000); 
     return START_STICKY; 
    } 

    public void Track(String lat, String lng) { 
     Sender sender = new Sender("AIzaSyAlXGdj3TGPAnKBiuhn4yxXgLKxwmHJnMY"); 
     String GcmId = new TrackPref(this).getTrackId(); 
     Message message = new Message.Builder() 
       .collapseKey("and_app") 
       .delayWhileIdle(true) 
       .addData("action", "location") 
       .addData("Lat", lat) 
       .addData("Long", lng) 
       .timeToLive(600) 
       .build(); 

     Result result = null; 
     try { 
      result = sender.send(message, GcmId, 2); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
     if (result.getMessageId() != null) { 
      String canonicalRegId = result.getCanonicalRegistrationId(); 
      Log.d("abc", result.toString()); 
     } else { 
      String error = result.getErrorCodeName(); 
     } 
    } 

    private void SendMessage(final String lat, final String lng) { 
     new AsyncTask<Void, Void, String>() { 
      @Override 
      protected String doInBackground(Void... params) { 
       Track(lat, lng); 
       return null; 
      } 

      @Override 
      protected void onPostExecute(String msg) { 

      } 
     }.execute(); 
    } 

    @Override 
    public IBinder onBind(Intent intent) { 
     return null; 
    } 

    @Override 
    public void onDestroy() { 
     super.onDestroy(); 
     System.out.println("--------------------------------onDestroy -stop service "); 
     timer.cancel(); 
     DISTANCE = totalDistance ; 
    } 

    private double distance(double lat1, double lon1, double lat2, double lon2) { 
     double theta = lon1 - lon2; 
     double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(deg2rad(theta)); 
     dist = Math.acos(dist); 
     dist = rad2deg(dist); 
     dist = dist * 60 * 1.1515; 
     return (dist); 
    } 

    private double deg2rad(double deg) { 
     return (deg * Math.PI/180.0); 
    } 

    private double rad2deg(double rad) { 
     return (rad * 180.0/Math.PI); 
    } 

    public boolean comapre_LatitudeLongitude() { 
     Log.v("Location4", "********* " + Thread.currentThread().getId()); 
     if (pastDistance.getLatitude() == currentDistance.getLatitude() && pastDistance.getLongitude() == currentDistance.getLongitude()) { 
      return false; 
     } else { 

      final double distance = distance(pastDistance.getLatitude(), pastDistance.getLongitude(), currentDistance.getLatitude(), currentDistance.getLongitude()); 
      System.out.println("Distance in mile :" + distance); 
      handler.post(new Runnable() { 

       @Override 
       public void run() { 
        float kilometer = 1.609344f; 
        Log.v("Location5", "********* " + Thread.currentThread().getId()); 
        totalDistance = totalDistance + distance * kilometer; 
        DISTANCE = totalDistance; 

       } 
      }); 
      return true; 
     } 
    } 
}

有关详细信息，请按照代码从下面库。 https://github.com/raviteja06/TrackMyClient

这是在回来时完成的，请务必将库更新到最新版本。

答

尝试用下面的代码：

public class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener{ 

    GoogleApiClient googleApiClient; 
    int REQUEST_CHECK_SETTINGS = 1; 
    Location mLastLocation; 
    LocationRequest locationRequest; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
     setSupportActionBar(toolbar); 
     checkForGPS(); 
    } 

    public void checkForGPS(){ 
     if (googleApiClient == null) { 
      googleApiClient = new GoogleApiClient.Builder(this) 
       .addApi(LocationServices.API) 
       .addConnectionCallbacks(this) 
       .addOnConnectionFailedListener(this).build(); 
      googleApiClient.connect(); 

      if(!((LocationManager)getSystemService(Context.LOCATION_SERVICE)).isProviderEnabled(LocationManager.GPS_PROVIDER)) { 
       //prompt user to enable gps 
       locationRequest = LocationRequest.create(); 
       locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); 
       locationRequest.setInterval(5000); 
       locationRequest.setFastestInterval(3000); 
       LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder() 
        .addLocationRequest(locationRequest); 
       builder.setAlwaysShow(true); 

       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(); 
         final LocationSettingsStates states = result.getLocationSettingsStates(); 
         switch (status.getStatusCode()) { 
          case LocationSettingsStatusCodes.SUCCESS: 
           // All location settings are satisfied. The client can initialize location 
           // requests here. 
           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(). 
            status.startResolutionForResult(
              MainActivity.this, 
              REQUEST_CHECK_SETTINGS); 
           } 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 onConnected(Bundle bundle) { 
     startLocationUpdates(); 
     mLastLocation = LocationServices.FusedLocationApi.getLastLocation(googleApiClient); 
    } 

    @Override 
    public void onConnectionSuspended(int i) { 

    } 

    @Override 
    public void onConnectionFailed(ConnectionResult connectionResult) { 

    } 

    @Override 
    public void onLocationChanged(Location location) { 
     mLastLocation = location; 
     // put your code here to play with Location object 
    } 

    protected void stopLocationUpdates() { 
     LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, this); 
    } 

    protected void startLocationUpdates() { 
     LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this); 
    } 
}

下面是一些有用的进口，你可能需要：

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.location.LocationSettingsRequest; 
import com.google.android.gms.location.LocationSettingsResult; 
import com.google.android.gms.location.LocationSettingsStates; 
import com.google.android.gms.location.LocationSettingsStatusCodes;

不要忘记在舱单申报这些权限：

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

如何在我的android应用程序中获得一个手机GPS位置？

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