android - 如果禁用定位服务，getFusedLocationProviderClient 不会激活我的 GPS

Question

我使用网络代码获取 gps 位置:

    mLocationRequest = new LocationRequest();
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS);
    mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS);


    LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();
    builder.addLocationRequest(mLocationRequest);
    LocationSettingsRequest locationSettingsRequest = builder.build();

    SettingsClient settingsClient = LocationServices.getSettingsClient(this);
    settingsClient.checkLocationSettings(locationSettingsRequest);

    getFusedLocationProviderClient(this).requestLocationUpdates(mLocationRequest, new LocationCallback() {
                @Override
                public void onLocationResult(LocationResult locationResult) {
                    onLocationChanged(locationResult.getLastLocation());
                }
            },
            Looper.myLooper());

一切正常，除了如果我的设备停用了定位服务，getFusedLocationProviderClient 会打开一个对话框并告诉该设备需要 wifi、手机网络和传感器。我同意并且应用程序激活了我的位置服务，但使用低功率设置(省电模式)。

我做错了什么？看起来 GPS 传感器没有激活，因为我的位置显示离我的真实位置很远。如果我进行手动设置，所有设置都非常有效。

Answer 1

解决了我的问题!

Task<LocationSettingsResponse> result;

......................

getFusedLocationProviderClient(this).requestLocationUpdates(mLocationRequest, new LocationCallback() {
            @Override
            public void onLocationResult(LocationResult locationResult) {
                onLocationChanged(locationResult.getLastLocation());
            }
        },
        Looper.myLooper());

这也激活了 GPS:

result = LocationServices.getSettingsClient(this).checkLocationSettings(locationSettingsRequest);
    result.addOnCompleteListener(new OnCompleteListener<LocationSettingsResponse>() {
        @Override
        public void onComplete(@NonNull Task<LocationSettingsResponse> task) {
            try {
                LocationSettingsResponse response = task.getResult(ApiException.class);
            } catch (ApiException exception) {
                switch (exception.getStatusCode()) {
                    case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                        try {
                            ResolvableApiException resolvable = (ResolvableApiException) exception;
                            resolvable.startResolutionForResult(
                                    NewMainActivity.this,
                                    REQUEST_CHECK_SETTINGS);
                        } catch (IntentSender.SendIntentException e) {
                            //
                        } catch (ClassCastException e) {
                            //
                        }
                        break;
                    case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                        break;
                }
            }
        }
    });