업데이트 위치 라이브러리를 사용하여 GPS 위치를 업데이트하고 백그라운드 서비스에있는 서버에 좌표를 전송하십시오.

Question

백그라운드 서비스 및 개장 라이브러리를 사용하지 않아서 새로운 앱을 디버깅하여 오류가 발생하지 않습니다. 서버에 보내기 (백그라운드 서비스) 도움을 주시면 감사하겠습니다. 미리 감사드립니다.

GPS 서비스

public class LocationUpdaterService extends Service 
{ 
    public static final int TWO_MINUTES = 120000; // 120 seconds 
    public static Boolean isRunning = false; 

    public LocationManager mLocationManager; 
    public LocationUpdaterListener mLocationListener; 
    public Location previousBestLocation = null; 

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

    @Override 
    public void onCreate() { 
     mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
     mLocationListener = new LocationUpdaterListener(); 
     super.onCreate(); 
    } 

    Handler mHandler = new Handler(); 
    Runnable mHandlerTask = new Runnable(){ 
     @Override 
     public void run() { 
      if (!isRunning) { 
       startListening(); 
      } 
      mHandler.postDelayed(mHandlerTask, TWO_MINUTES); 
     } 
    }; 

    @Override 
    public int onStartCommand(Intent intent, int flags, int startId) { 
     mHandlerTask.run(); 
     return START_STICKY; 
    } 

    @Override 
    public void onDestroy() { 
     stopListening(); 
     mHandler.removeCallbacks(mHandlerTask); 
     super.onDestroy(); 
    } 

    private void startListening() { 
     if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED 
       || ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { 
      if (mLocationManager.getAllProviders().contains(LocationManager.NETWORK_PROVIDER)) 
       mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, mLocationListener); 

      if (mLocationManager.getAllProviders().contains(LocationManager.GPS_PROVIDER)) 
       mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, mLocationListener); 
     } 
     isRunning = true; 
    } 

    private void stopListening() { 
     if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED 
       || ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { 
      mLocationManager.removeUpdates(mLocationListener); 
     } 
     isRunning = false; 
    } 

    public class LocationUpdaterListener implements LocationListener 
    { 
     @Override 
     public void onLocationChanged(Location location) { 
      if (isBetterLocation(location, previousBestLocation)) { 
       previousBestLocation = location; 
       try { 
        // Script to post location data to server.. 

        Call<Update> loginCall; 
        String deviceKey; 

        deviceKey = Settings.Secure.getString(getContentResolver(), Settings.Secure.ANDROID_ID); 

        loginCall = MyApplication.getInstance().getAPI().update(deviceKey,String.valueOf(location.getLatitude()),String.valueOf(location.getLongitude())); 
        loginCall.enqueue(new Callback<Update>() { 
         @Override 
         public void onResponse(Call<Update> call, Response<Update> response) { 
          if(response.getClass() != null) 
          { 

          } 
         } 

         @Override 
         public void onFailure(Call<Update> call, Throwable t) { 

         } 

        }); 

       } 
       catch (Exception e) { 
        e.printStackTrace(); 
       } 
       finally { 
        stopListening(); 
       } 
      } 
     } 

     @Override 
     public void onProviderDisabled(String provider) { 
      stopListening(); 
     } 

     @Override 
     public void onProviderEnabled(String provider) { } 

     @Override 
     public void onStatusChanged(String provider, int status, Bundle extras) { } 
    } 

    protected boolean isBetterLocation(Location location, Location currentBestLocation) { 
     if (currentBestLocation == null) { 
      // A new location is always better than no location 
      return true; 
     } 

     // Check whether the new location fix is newer or older 
     long timeDelta = location.getTime() - currentBestLocation.getTime(); 
     boolean isSignificantlyNewer = timeDelta > TWO_MINUTES; 
     boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES; 
     boolean isNewer = timeDelta > 0; 

     // If it's been more than two minutes since the current location, use the new location 
     // because the user has likely moved 
     if (isSignificantlyNewer) { 
      return true; 
      // If the new location is more than two minutes older, it must be worse 
     } else if (isSignificantlyOlder) { 
      return false; 
     } 

     // Check whether the new location fix is more or less accurate 
     int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy()); 
     boolean isLessAccurate = accuracyDelta > 0; 
     boolean isMoreAccurate = accuracyDelta < 0; 
     boolean isSignificantlyLessAccurate = accuracyDelta > 200; 

     // Check if the old and new location are from the same provider 
     boolean isFromSameProvider = isSameProvider(location.getProvider(), currentBestLocation.getProvider()); 

     // Determine location quality using a combination of timeliness and accuracy 
     if (isMoreAccurate) { 
      return true; 
     } else if (isNewer && !isLessAccurate) { 
      return true; 
     } else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) { 
      return true; 
     } 
     return false; 
    } 

    /** Checks whether two providers are the same */ 
    private boolean isSameProvider(String provider1, String provider2) { 
     if (provider1 == null) { 
      return provider2 == null; 
     } 
     return provider1.equals(provider2); 
    } 

내 응용 프로그램

import android.app.Application; 
import java.util.concurrent.TimeUnit; 
import okhttp3.OkHttpClient; 
import retrofit2.Retrofit; 
import retrofit2.converter.gson.GsonConverterFactory; 

public class MyApplication extends Application { 
    private API api; 
    private OkHttpClient client; 
    private static MyApplication sInstance; 

    @Override 
    public void onCreate() { 
     super.onCreate(); 
     sInstance = this; 
     configureAPI(); 

    } 

    private void configureAPI() { 
     client = new OkHttpClient.Builder() 
       .connectTimeout(80, TimeUnit.SECONDS) 
       .writeTimeout(300, TimeUnit.SECONDS) 
       .readTimeout(80, TimeUnit.SECONDS) 
       .build(); 
     Retrofit retrofit = new Retrofit.Builder() 
       .baseUrl(Server.API_URL) 
       .addConverterFactory(GsonConverterFactory.create()) 
       .client(client) 
       .build(); 
     api = retrofit.create(API.class); 
    } 

    public API getAPI() { 
     return api; 
    } 

    public static MyApplication getInstance() { 
     return sInstance; 
    } 
} 

API

public interface API { 
    @FormUrlEncoded 
    @POST("updateLocation") 
    Call<Update> update(@Query("token") String token, @Query("lat") String latitude, @Field("long") String longitude); 

} 

서버

public class Server { 
    public static final String API_URL = "http://192.168.146.2:8090/"; 
    public static final String REG_API_URL = "http://192.168.120.2:8090/"; 
    public static final String SndMsg_API_URL = "http://192.168.120.2:8090/"; 

} 

MainActivity

public class MainActivity extends AppCompatActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     Intent serviceIntent = new Intent(getApplicationContext(), LocationUpdaterService.class); 
     startService(serviceIntent); 

    } 
} 

Answer 1

에 코드를 꽤 좋아 보인다. 문제를 유발할 수있는 몇 가지 사항이 있습니다. 그것들을 확인하십시오.

먼저 컴파일러가 "OnLocationChanged()"메서드 내부에 있는지 확인하십시오.

두 번째 사항은 웹 서비스 호출 방법이 "업데이트"유형인지 확인하십시오. 당신이 "업데이트"를 사용하기 때문입니다. 그것은 "게시"일 수 있습니다.

세 번째 것은 "OnFailure()"메소드에서 응답을 인쇄하는 것입니다. 아마도 실패 할 것입니다.

이 시나리오를 확인하여 문제를 발견하시기 바랍니다.