在后台跟踪位置

Question

我想在android中实现位置跟踪但是在一个很小的时间间隔（秒）内，在搜索和阅读文档后我发现app在后台时位置访问有限制，解决方案是使用前台服务，但是我需要另一种合法有效的解决方案，而无需向用户显示通知。

Answer 1

You could use something like that

public class GPSService extends Service {

private LocationListener listener;
private LocationManager locationManager;

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

@SuppressLint("MissingPermission")
@Override
public void onCreate() {
    super.onCreate();
    listener = new LocationListener() {
        @Override
        public void onLocationChanged(Location location) {
            Intent i = new Intent("location_update");
            i.putExtra("coordinates",location);
            sendBroadcast(i);

        }

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

        }

        @Override
        public void onProviderEnabled(String provider) {

        }

        @Override
        public void onProviderDisabled(String provider) {

            Intent i = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
            i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(i);
        }
    };
    locationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);

    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,5000,0,listener);
}

@Override
public void onDestroy() {
    super.onDestroy();
    if (locationManager != null){
        locationManager.removeUpdates(listener);
    }
}
}

And retreive by broadcaster