Android Open Source - GpsExample Gps Service

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License

The source code is released under:

MIT License

Java Source Code

package me.kaipi.gpsexample;
/*from w ww .j a v  a2 s .  c  om*/
import android.app.Service;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesClient.ConnectionCallbacks;
import com.google.android.gms.common.GooglePlayServicesClient.OnConnectionFailedListener;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.location.LocationClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;

public class GpsService extends Service implements ConnectionCallbacks, OnConnectionFailedListener, LocationListener {

  public static final String LOCATION_BROADCAST_ACTION = "me.kaipi.gpsexample.LocationBroadcast";
  public static final String LOCATION_EXTRA = "location";
  public static final String BROADCAST_INTERVAL = "broadcast_interval";
  public static final Integer BROADCAST_INTERVAL_DEFAULT = 5;
  
  private static final String TAG = "GpsService";
  final private static int SECONDS = 1000, MINUTES = 60 * SECONDS;
  private static final int FASTEST_INTERVAL = 30 * SECONDS;
  private LocationRequest locationRequest = null;
  private LocationClient locationClient = null;
  
  @Override
  public IBinder onBind(Intent arg0) {
    return null;
  }
  
  @Override
  public void onCreate() {
    Log.d(TAG, "onCreate");
    this.locationRequest = new LocationRequest();
    if (hasFineLocationPermission())
      this.locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    else if (hasCoarseLocationPermission())
      this.locationRequest.setPriority(LocationRequest.PRIORITY_LOW_POWER);
    else
      this.locationRequest.setPriority(LocationRequest.PRIORITY_NO_POWER);
    
    this.locationRequest.setFastestInterval(FASTEST_INTERVAL);
    this.locationRequest.setInterval(FASTEST_INTERVAL);
    this.locationClient = new LocationClient(this, this, this);
  }
  
  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
    Log.d(TAG, "onStartCommand");
    
    if (!hasFineLocationPermission() && !hasCoarseLocationPermission() ||
        GooglePlayServicesUtil.isGooglePlayServicesAvailable(this) != ConnectionResult.SUCCESS) {
      Log.e(TAG, getString(R.string.gpsServiceStartError));
      this.stopSelf();
      return START_NOT_STICKY;
    }
    
    if (intent != null) {
      if (this.locationClient.isConnected() || this.locationClient.isConnecting())
        this.locationClient.disconnect();
      
      Integer broadcast_interval = intent.getIntExtra(BROADCAST_INTERVAL, BROADCAST_INTERVAL_DEFAULT); 
      this.locationRequest.setInterval(broadcast_interval * MINUTES);
      
      this.locationClient.connect();
    }
    
    return START_STICKY;
  }
  
  public void onDestroy() {
    Log.d(TAG, "onDestroy");
    if (this.locationClient.isConnected()) {
      this.locationClient.removeLocationUpdates(this);
    }
    this.locationClient.disconnect();
    super.onDestroy();
  }

  //Google Play Location Services
  
  @Override
  public void onConnected(Bundle dataBundle) {
    Log.d(TAG, "Play: onConnected");
    
    this.locationClient.requestLocationUpdates(this.locationRequest, this);
  }
  
  @Override
  public void onDisconnected() {
    Log.d(TAG, "Play: onDisconnected");
  }
  
  @Override
  public void onConnectionFailed(ConnectionResult result) {
    Log.d(TAG, "Play: onConnectionFailed");
  }
  
  @Override
    public void onLocationChanged(Location location) {
        Log.d(TAG, "onLocationChanged " + location.toString());
        broadcastLocation(location);
    }
  
  private boolean hasFineLocationPermission() {
    return this.checkCallingOrSelfPermission("android.permission.ACCESS_FINE_LOCATION") == PackageManager.PERMISSION_GRANTED;
  }
  
  private boolean hasCoarseLocationPermission() {
    return this.checkCallingOrSelfPermission("android.permission.ACCESS_COARSE_LOCATION") == PackageManager.PERMISSION_GRANTED;
  }
  
  private void broadcastLocation(Location location) {
    Intent intent = new Intent();
    intent.setAction("me.kaipi.gpsexample.LocationBroadcast");
    intent.putExtra("location", location);
    sendBroadcast(intent);
  }

}

Java Source Code List

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