引用：

permission_handler: "^3.2.0" # 权限

工具类：

import 'package:flutter/cupertino.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:yxk_app/constant/functions.dart';

/// 权限管理工具类
class PermissionUtils {
  /// 检测相关权限是否已经打开(根据已有状态值)
  static bool checkPermissionsByStatus(List<PermissionStatus> lists) {
    bool result = true;

    for (PermissionStatus permissionStatus in lists) {
      if (permissionStatus != PermissionStatus.granted) {
        result = false;
        break;
      }
    }

    return result;
  }

  /// 检测相关权限是否已经打开（根据已有权限名称）
  static Future<bool> checkPermissionsByGroup(
      List<PermissionGroup> lists) async {
    bool result = true;

    for (PermissionGroup permissionGroup in lists) {
      PermissionStatus checkPermissionStatus =
          await PermissionHandler().checkPermissionStatus(permissionGroup);

      if (checkPermissionStatus != PermissionStatus.granted) {
        result = false;
        break;
      }
    }

    return result;
  }

  /// 权限提示对话款
  static showDialog(BuildContext cxt, String title, String content,
      ActionNoParam ok, ActionNoParam cancel) {
    showCupertinoDialog<int>(
        context: cxt,
        builder: (cxt) {
          return CupertinoAlertDialog(
            title: Text(title),
            content: Text(content),
            actions: <Widget>[
              CupertinoDialogAction(
                child: Text("去开启"),
                onPressed: () {
                  ok();
                },
              ),
              CupertinoDialogAction(
                child: Text("取消"),
                onPressed: () {
                  cancel();
                },
              )
            ],
          );
        });
  }
}