farmer_client/lib/models/app.dart

import 'dart:async';
import 'dart:io';

import 'package:amap_flutter_location/amap_flutter_location.dart';
import 'package:farmer_client/models/entities/person.dart';
import 'package:farmer_client/widgets/Modal.dart';
import 'package:get/get.dart';
import '../utils/location.dart';

class AppController extends GetxController {
  // 有了这句, 可以直接 AppController.t 调用
  static AppController t = Get.find();

  final user = Rx<Person>(Person());
  final location = Rxn<Map<String, Object>>();
  final testInt = 1.obs;

  AMapFlutterLocation? _location;
  StreamSubscription<Map<String, Object>>? _locationListener;

  get locationStr {
    if (null == location.value) return null;

    double longitude = location.value!['longitude'] as double;
    double latitude = location.value!['latitude'] as double;

    return longitude.toString() + "," + latitude.toString();
  }

  @override
  void onInit() {
    super.onInit();

    // 尝试获取 location
    requireLocation().then((loc) async {
      _location = loc;

      // 监听位置变化
      _locationListener = loc.onLocationChanged().listen((Map<String, Object> result) {
        location(result);
      });
      loc.startLocation();
    }).catchError((e) {
      print(e);

      showAlert(
        title: '获取定位失败',
        message: e.message,
        onConfirm: () => exit(1),
      );
    });

    // // 尝试获取一次人员信息
    // getCurrent().then((person) {
    //   user(person);
    // }).catchError((e) {
    //   print(e);
    // });
  }

  @override
  void onClose() {
    if (null != _locationListener) {
      _locationListener?.cancel();
    }

    if (null != _location) {
      _location?.destroy();
    }
  }

}