Question

我正试图为（我认为）过时的代码找到解决方案。我使用的FusedLocationApi.getLastLocation总是returns null，因此我无法获取位置。我总是得到吐司“无法获得您的位置”。

private void displayLocation() {
    if(ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
            && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        requestRuntimePermission();
    }

    else {
        mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
        if(mLastLocation != null) {
            double latitude = mLastLocation.getLatitude();
            double longitude = mLastLocation.getLongitude();

            //Add marker in your location and move the camera
            LatLng yourLocation = new LatLng(latitude,longitude);
            mMap.addMarker(new MarkerOptions().position(yourLocation).title("Your location"));
            mMap.moveCamera(CameraUpdateFactory.newLatLng(yourLocation));
            mMap.animateCamera(CameraUpdateFactory.zoomTo(17.0f));
        }

        else {
            Toast.makeText(this, "Could not get your location", Toast.LENGTH_SHORT).show();
        }
    }
}

Answer 1

这是更新的代码，如何使用新的熔融LocationApi

private void requestLocation() {
        if (!permissionGranted) return;
        locationRequest = LocationRequest.create();
        locationRequest.setPriority(priority);

        if (updateInterval != 0)
            locationRequest.setInterval(updateInterval);

        if (meter != 0)
            locationRequest.setSmallestDisplacement(meter);

        // Create LocationSettingsRequest object using location request
        LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();
        builder.addLocationRequest(locationRequest);
        builder.setAlwaysShow(true);
        LocationSettingsRequest locationSettingsRequest = builder.build();

        // Check whether location settings are satisfied
        // https://developers.google.com/android/reference/com/google/android/gms/location/SettingsClient
        SettingsClient settingsClient = LocationServices.getSettingsClient(context);

        Task<LocationSettingsResponse> task = settingsClient.checkLocationSettings(locationSettingsRequest);

        task.addOnCompleteListener(task1 -> {
            locationRequested = true;
            try {
                LocationSettingsResponse response = task1.getResult(ApiException.class);
                // All location settings are satisfied. The client can initialize location
                // requests here.
                Log.v(TAG, "Location settings satisfied");

                locationStatusOk = true;
                checkInitialLocation();


            } catch (ApiException exception) {
                locationRequested = false;
                Log.v(" Failed ", String.valueOf(exception.getStatusCode()));
                switch (exception.getStatusCode()) {

                    case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                        // Location settings are not satisfied. But could be fixed by showing the
                        // user a dialog.
                        // Cast to a resolvable exception.
                        ResolvableApiException resolvable = (ResolvableApiException) exception;
                        // Show the dialog by calling startResolutionForResult(),
                        // and check the result in onActivityResult().
                        try {
                            resolvable.startResolutionForResult(
                                    activity,
                                    REQUEST_CHECK_SETTINGS);
                        } catch (IntentSender.SendIntentException e) {
                            e.printStackTrace();
                        }
                        break;
                    case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                        // Location settings are not satisfied. However, we have no way to fix the
                        // settings so we won't show the dialog.
                        locationStatusOk = false;
                        changeSettings = true;
                        break;
                }

            }
        });

    }

这是该类的链接，以获取更多信息，并且其中处理了所有信息： https://github.com/mesunnysaini/locationfetcher/blob/master/LocationFetcher

如果您有任何疑问或问题，请告诉我，我也将分享如何实现它。

不推荐使用FusedLocationApi，如何替换我的代码？

1 个答案: