Question

在location_switch点击用户上线并检查当前位置。但是在点击开关时，它没有显示我当前的位置。我正在使用模拟器来检查应用程序。即使我在模拟器中更改位置，但它无法正常工作。检查位置后，它将存储在 Firebase数据库中，但正在运行，但我的当前位置未显示。

location_switch.setOnCheckedChangeListener(new MaterialAnimatedSwitch.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(boolean isOnline) {

            if (isOnline) {
                startLocationUpdates();
                displayLocation();
                Snackbar.make(mapFragment.getView(), "You are online", Snackbar.LENGTH_SHORT)
                        .show();
            } else {
                stopLocationUpdates();
                mCurrent.remove();
                Snackbar.make(mapFragment.getView(), "You are offline", Snackbar.LENGTH_SHORT)
                        .show();
            }

        }
    });
}

private void stopLocationUpdates() {
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
            ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        return;
    }
    LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);

}

private void displayLocation() {
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
            ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        return;
    }
    mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
    if (mLastLocation != null) {
        if (location_switch.isChecked()) {
            final double latitute = mLastLocation.getLatitude();
            final double longitude = mLastLocation.getLongitude();

           /*Update To FireBase*/
            geoFire.setLocation(FirebaseAuth.getInstance().getCurrentUser().getUid(), new GeoLocation(latitute, longitude), new GeoFire.CompletionListener() {
                @Override
                public void onComplete(String key, DatabaseError error) {
                   /*Add Marker*/
                    if (mCurrent != null) {
                        mCurrent.remove();
                        mCurrent = mMap.addMarker(new MarkerOptions()
                                .icon(BitmapDescriptorFactory.fromResource(R.drawable.car))
                                .position(new LatLng(latitute, longitude))
                                .title("You"));
                       /*Move camera to this postion*/
                        mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latitute, latitute), 15.0f));

                    }
                }
            });
        }
    } else {
        Log.d("ERROR", "Can Not Get Your Location: ");
    }
}



private void startLocationUpdates() {
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
            ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        return;
    }
    LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);

}


@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;

}

@Override
public void onLocationChanged(Location location) {
    mLastLocation = location;
    displayLocation();

}


@Override
public void onConnected(@Nullable Bundle bundle) {
    displayLocation();
    startLocationUpdates();

}

@Override
public void onConnectionSuspended(int i) {
    mGoogleApiClient.connect();

}

@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {

}
}

任何人都可以帮我弄清楚我做错了吗？

Answer 1

您已在许多地方调用了displayLocation。因此，在goOnline上只需调用startLocationUpdate并在onLocationChanged中调用displayLocation。由于locationUpdates等待android系统根据你的FASTEST INTERVAL触发下一个事件，你将无法获得最新的位置。同时将FASTEST INTERVAL设置为1秒以进行即时位置更新。希望这会有所帮助。

D /错误：无法获取您的位置：

1 个答案: