Android - 使用 Play 服务 API 的位置 - 服务类中的 SettingsClient 错误

Question

我必须每 30 分钟获取一次用户当前位置。所以我计划使用 Play Service API 和 Work manager 在后台执行此操作（即使我的应用程序关闭它也会获取位置）。如果我的位置设置为 ON，一切正常。我可以通过 SettingsClient 选项检查位置和权限是否可用。但是只有当我在 Activity 上使用 SettingsClient 时，它才能工作。在 Workmanager(Service) 类中，当我尝试使用 SettingsClient 时，它显示如下图所示的错误

需要用Activity来投射

如果我将它与 Activity 一起投射，则意味着编译时没有问题。

但在运行时它会给出类似的错误

请给出一些解决方法。

Answer 1

我得到了解决这个问题的方法，我想我可以发布。也许它会帮助某人。

我已经改变了这样的编码

    LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                .addLocationRequest(mLocationRequestHighAccuracy)
            .addLocationRequest(mLocationRequestBalancedPowerAccuracy);
        Task<LocationSettingsResponse> result = LocationServices.getSettingsClient(getApplicationContext()).checkLocationSettings(builder.build());

        result.addOnCompleteListener(new OnCompleteListener<LocationSettingsResponse>() {
            @SuppressLint("MissingPermission")
            @Override
            public void onComplete(Task<LocationSettingsResponse> task) {
                try {
                    LocationSettingsResponse response = task.getResult(ApiException.class);
                    // All location settings are satisfied. The client can initialize location
                    // requests here.
                    mFusedLocationClient.requestLocationUpdates(locationRequest, locationCallback, Looper.getMainLooper());

                } catch (ApiException exception) {
                    switch (exception.getStatusCode()) {
                        case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                            // Location settings are not satisfied. But could be fixed by showing the
                            // user a dialog.
                            try {
                                // Cast to a resolvable exception.
                                ResolvableApiException resolvable = (ResolvableApiException) exception;
                                // Show the dialog by calling startResolutionForResult(),
                                // and check the result in onActivityResult().
                             /*   resolvable.startResolutionForResult(
                                        OuterClass.this,
                                        REQUEST_CHECK_SETTINGS);*/
                                sendNotification("Failed", "Turn on Location" );
                            } catch (ClassCastException e) {
                                // Ignore, should be an impossible error.
                            }
                            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.
                            sendNotification("Failed", "Setting or not avaible" );

                            break;
                    }
                }
            }
        });

参考：https://developers.google.com/android/reference/com/google/android/gms/location/SettingsClient