如果我们需要使用fusion location api,那么我们需要使用Google API客户端,对于后台服务,使用它不是问题,以下是我用于在后台获取位置更新的示例,但还有一件事是Google从6.0引入’DOZE’模式,所以当你的设备处于’DOZE’模式时,我无法给予保证更新,@H_301_7@import android.Manifest; import android.app.Service; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.location.Location; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.util.Log; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GoogleApiAvailability; 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; /** * Created By Dhaval Solanki */ public class ConnectionService extends Service implements GoogleApiClient.ConnectionCallbacks,GoogleApiClient.OnConnectionFailedListener,LocationListener { String TAG = "ConnectionService"; private GoogleApiClient mGoogleApiClient; private LocationRequest mLocationRequest; private Location prevIoUsLocation; public static final long UPDATE_INTERVAL_IN_MILLISECONDS = 30000; public static final long FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS = UPDATE_INTERVAL_IN_MILLISECONDS / 2; private Location mLastLocation; private Context context; @Override public IBinder onBind(Intent intent) { Log.i(TAG,"onBind"); return null; } @Override public int onStartCommand(Intent intent,int flags,int startId) { context = getApplicationContext(); Log.i(TAG,"onStartCommand"); if (checkPermsion(context)) { setupLocationService(context); } return Service.START_STICKY; } @Override public void onCreate() { super.onCreate(); ApplicationCLass.isServiceRunning = true; } @Override public boolean onUnbind(Intent intent) { Log.i(TAG,"onUnbind"); ApplicationCLass.isServiceRunning = false; return super.onUnbind(intent); } @Override public void onDestroy() { ApplicationCLass.isServiceRunning = false; super.onDestroy(); } private void setupLocationService(Context context) { if (checkPlayServices()) { mGoogleApiClient = new GoogleApiClient.Builder(context) .addApi(LocationServices.API) .addConnectionCallbacks(this) .addOnConnectionFailedListener(this) .build(); createLocationRequest(); } } protected void createLocationRequest() { mLocationRequest = new LocationRequest().create(); mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS); mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS); mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY); mGoogleApiClient.connect(); } public boolean checkPermsion(Context context) { int MyVersion = Build.VERSION.SDK_INT; if (MyVersion > Build.VERSION_CODES.LOLLIPOP_MR1) { if (ContextCompat.checkSelfPermission(context,Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { return false; } else if (ContextCompat.checkSelfPermission(context,Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { return false; } else { return true; } } else { return true; } } private boolean checkPlayServices() { GoogleApiAvailability googleAPI = GoogleApiAvailability.getInstance(); int result = googleAPI.isGooglePlayServicesAvailable(this); if (result != ConnectionResult.SUCCESS) { return false; } return true; } private void startLocationUpdates() { if (mGoogleApiClient.isConnected()) { if (ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { return; } if (Prefs.getUserLat(context).trim().length() > 0 && Prefs.getUserLong(context).trim().length() > 0) { } else { mLastLocation = LocationServices.FusedLocationApi.getLastLocation( mGoogleApiClient); if (mLastLocation != null) { Prefs.setUserLat(context,String.valueOf(mLastLocation.getLatitude())); Prefs.setUserLong(context,String.valueOf(mLastLocation.getLongitude())); } } LocationServices.FusedLocationApi.requestLocationUpdates( mGoogleApiClient,mLocationRequest,this); } } @Override public void onConnected(@Nullable Bundle bundle) { Log.i(TAG,"Connected to onConnected"); startLocationUpdates(); } @Override public void onConnectionSuspended(int i) { Log.i(TAG,"Connected to onConnectionSuspended"); } @Override public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { Log.i(TAG,"Connected to onConnectionFailed"); } @Override public void onLocationChanged(Location location) { try { Logger.print("onLocationChanged","latitued :" + location.getLatitude() + ",Longitude " + location.getLongitude()); } catch (Exception e) { e.printStackTrace(); } } }

另一个alaram服务继续运行或不运行

@H_301_7@import android.app.ActivityManager; import android.app.IntentService; import android.content.Context; import android.content.Intent; import android.util.Log; public class AlarmService extends IntentService { @Override protected void onHandleIntent(Intent intent) { boolean isServiceRunning = false; ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { if (ConnectionService.class.getName().equals(service.service.getClassName())) { isServiceRunning = true; break; } } Log.i("AlarmService","Service is running " + isServiceRunning); if(!isServiceRunning) { startService(new Intent(getApplicationContext(),ConnectionService.class)); } else { ConnectionService.checkConnectionAndConnect(getApplicationContext()); } } /** * Creates an IntentService. Invoked by your subclass's constructor. */ public AlarmService() { super("AlaramService"); } }

最后开始服务

@H_301_7@private void checkAndStartService() { final ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); new AsyncTask<Void,Void,Boolean>() { boolean isServiceRunning = false; @Override protected Boolean doInBackground(Void... params) { for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { if (ConnectionService.class.getName().equals(service.service.getClassName())) { isServiceRunning = true; break; } } return isServiceRunning; } @Override protected void onPostExecute(Boolean aBoolean) { super.onPostExecute(aBoolean); Log.i("onPostExecute","Service running = " + aBoolean); if (!aBoolean) { startService(new Intent(ActivitySplash.this,ConnectionService.class)); Intent i = new Intent(ActivitySplash.this,AlarmService.class); PendingIntent pi = PendingIntent.getService(ActivitySplash.this,i,0); AlarmManager am = (AlarmManager) ActivitySplash.this.getSystemService(Context.ALARM_SERVICE); am.cancel(pi); // cancel any existing alarms am.setRepeating(AlarmManager.RTC_WAKEUP,System.currentTimeMillis(),60000,pi); } } }.execute(); }