如何从IntentService获取FusedLocation [英] How to get FusedLocation from IntentService

问题描述

• 如何使用新的 > FusedLocation
  来自 IntentService 的API


• 如何确保 IntentService 会从 FusedLocation API 接收所有
  回调？
  即
  如何获取位置对象同步？

解决方案

  import java.util.ArrayList ; 
 import java.util.List; 
 
 import org.apache.http.NameValuePair; 
 import org.apache.http.message.BasicNameValuePair; 
 import org.json.JSONArray; 
 import org.json.JSONException; 
 import org.json.JSONObject; 
 
导入android.app.AlertDialog; 
导入android.app.Notification; 
导入android.app.NotificationManager; 
导入android.app.PendingIntent; 
导入android.app.Service; 
导入android.content.Context; 
导入android.content.Intent; 
导入android.content.SharedPreferences; 
导入android.location.Criteria; 
导入android.location.Location; 
导入android.location.LocationManager; 
导入android.os.Bundle; 
导入android.os.Handler; 
导入android.os.IBinder; 
导入android.util.Log; 
导入android.widget.Toast; 
 
 import com.example.driverapplication.CommonUtilities; 
 import com.example.driverapplication.R; 
 import com.example.driverapplication.ServiceHandler; 
 import com.example.driverapplication.utilities.ConnectionDetector; 
 import com.google.android.gms.common.ConnectionResult; 
 import com.google.android.gms.common.api.GoogleApiClient; 
 import com.google.android.gms.location.LocationRequest; 
 import com.google.android.gms.location.LocationServices; 
 
 public class LocationUpdate extends Service实现GoogleApiClient.ConnectionCallbacks，
 GoogleApiClient.OnConnectionFailedListener {
 private static final String TAG =DRIVER; 
私人LocationManager mLocationManager = null; 
 private static final int LOCATION_INTERVAL = 30000; 
 private static final float LOCATION_DISTANCE = 0; 
 private double currentLat，currentLng; 
 private SharedPreferences pref; 
 private String driverId; 
私有GoogleApiClient mGoogleApiClient; 
 //连接位置服务的请求
 private LocationRequest mLocationRequest; 
 
 private LocationListener locationListener; 
 
 private class LocationListener implements 
 com.google.android.gms.location.LocationListener {
 
 public LocationListener（）{
} 
 
 @Override 
 public void onLocationChanged（Location location）{
 Log.e（TAG，onLocationChanged：+ location）; 
 currentLat = location.getLatitude（）; 
 currentLng = location.getLongitude（）; 
 
 
 
 
 
 
 $ b @Override 
 public IBinder onBind（Intent arg0）{
返回null; 
} 
 
 @Override 
 public int onStartCommand（Intent intent，int flags，int startId）{
 Log.e（TAG，onStartCommand）; 
 super.onStartCommand（intent，flags，startId）; 
 boolean stopService = false; 
 if（intent！= null）
 stopService = intent.getBooleanExtra（stopservice，false）; 
 
 System.out.println（stopservice+ stopService）; 
 
 locationListener = new LocationListener（）; 
 if（stopService）
 stopLocationUpdates（）; 
 else {
 if（！mGoogleApiClient.isConnected（））
 mGoogleApiClient.connect（）; 
} 
 
 return START_STICKY; 
} 
 
 @Override 
 public void onCreate（）{
 Log.e（TAG，onCreate）; 
 pref = getSharedPreferences（driver_app，MODE_PRIVATE）; 
 driverId = pref.getString（driver_id，）; 
 mGoogleApiClient = new GoogleApiClient.Builder（this）
 .addApi（LocationServices.API）.addConnectionCallbacks（this）
 .addOnConnectionFailedListener（this）.build（）; 
 
 
 
 $ b @覆盖
 public void onDestroy（）{
 Log.e（TAG，onDestroy）; 
 super.onDestroy（）; 
} 
 
 public void stopLocationUpdates（）{
 LocationServices.FusedLocationApi.removeLocationUpdates（
 mGoogleApiClient，locationListener）; 
 
 if（mGoogleApiClient.isConnected（））
 mGoogleApiClient.disconnect（）; 
 
 
 $ b @覆盖
 public void onConnectionFailed（ConnectionResult arg0）{
 // TODO自动生成的方法存根
 
} 
 
 @Override 
 public void onConnected（Bundle arg0）{
 // TODO自动生成的方法存根
 mLocationRequest = LocationRequest.create（）; 
 mLocationRequest.setPriority（LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY）; 
 mLocationRequest.setInterval（35000）; 
 mLocationRequest.setFastestInterval（30000）; 
 startLocationUpates（）; 
} 
 private void startLocationUpates（）{
 LocationServices.FusedLocationApi.requestLocationUpdates（
 mGoogleApiClient，mLocationRequest，locationListener）; 
 
 
 
 @Override 
 public void onConnectionSuspended（int arg0）{
 // TODO自动生成的方法存根
 
} 
 
} 
  

• How to retrieve current location by using the new FusedLocation API from an IntentService?
• How can i make sure that IntentService will receive all callbacks from FusedLocation API? ie, How can i obtain the location object synchronously?

解决方案

This may help you

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

    import org.apache.http.NameValuePair;
    import org.apache.http.message.BasicNameValuePair;
    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;

    import android.app.AlertDialog;
    import android.app.Notification;
    import android.app.NotificationManager;
    import android.app.PendingIntent;
    import android.app.Service;
    import android.content.Context;
    import android.content.Intent;
    import android.content.SharedPreferences;
    import android.location.Criteria;
    import android.location.Location;
    import android.location.LocationManager;
    import android.os.Bundle;
    import android.os.Handler;
    import android.os.IBinder;
    import android.util.Log;
    import android.widget.Toast;

    import com.example.driverapplication.CommonUtilities;
    import com.example.driverapplication.R;
    import com.example.driverapplication.ServiceHandler;
    import com.example.driverapplication.utilities.ConnectionDetector;
    import com.google.android.gms.common.ConnectionResult;
    import com.google.android.gms.common.api.GoogleApiClient;
    import com.google.android.gms.location.LocationRequest;
    import com.google.android.gms.location.LocationServices;

    public class LocationUpdate extends Service implements GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener {
        private static final String TAG = "DRIVER";
        private LocationManager mLocationManager = null;
        private static final int LOCATION_INTERVAL = 30000;
        private static final float LOCATION_DISTANCE = 0;
        private double currentLat, currentLng;
        private SharedPreferences pref;
        private String driverId;
        private GoogleApiClient mGoogleApiClient;
        // A request to connect to Location Services
        private LocationRequest mLocationRequest;

        private LocationListener locationListener;

        private class LocationListener implements
                com.google.android.gms.location.LocationListener {

            public LocationListener() {
            }

            @Override
            public void onLocationChanged(Location location) {
                Log.e(TAG, "onLocationChanged: " + location);
                currentLat = location.getLatitude();
                currentLng = location.getLongitude();

            }


        }


        @Override
        public IBinder onBind(Intent arg0) {
            return null;
        }

        @Override
        public int onStartCommand(Intent intent, int flags, int startId) {
            Log.e(TAG, "onStartCommand");
            super.onStartCommand(intent, flags, startId);
            boolean stopService = false;
            if (intent != null)
                stopService = intent.getBooleanExtra("stopservice", false);

            System.out.println("stopservice " + stopService);

            locationListener = new LocationListener();
            if (stopService)
                stopLocationUpdates();
            else {
                if (!mGoogleApiClient.isConnected())
                    mGoogleApiClient.connect();
            }

            return START_STICKY;
        }

        @Override
        public void onCreate() {
            Log.e(TAG, "onCreate");
            pref = getSharedPreferences("driver_app", MODE_PRIVATE);
            driverId = pref.getString("driver_id", "");
            mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addApi(LocationServices.API).addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this).build();
        }



        @Override
        public void onDestroy() {
            Log.e(TAG, "onDestroy");
            super.onDestroy();
        }

        public void stopLocationUpdates() {
            LocationServices.FusedLocationApi.removeLocationUpdates(
                    mGoogleApiClient, locationListener);

            if (mGoogleApiClient.isConnected())
                mGoogleApiClient.disconnect();
        }


        @Override
        public void onConnectionFailed(ConnectionResult arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onConnected(Bundle arg0) {
            // TODO Auto-generated method stub
            mLocationRequest = LocationRequest.create();
            mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
            mLocationRequest.setInterval(35000);
            mLocationRequest.setFastestInterval(30000);
            startLocationUpates();
        }
        private void startLocationUpates() {
            LocationServices.FusedLocationApi.requestLocationUpdates(
                    mGoogleApiClient, mLocationRequest, locationListener);
        }


        @Override
        public void onConnectionSuspended(int arg0) {
            // TODO Auto-generated method stub

        }

    }

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