flutter_nayou/lib/app/modules/welcome/views/welcome_view.dart

import 'dart:ffi';

import 'package:flutter/material.dart';

import 'package:get/get.dart';
import 'package:url_launcher/url_launcher.dart';

import '../../../controller/controllers.dart';
import '../controllers/welcome_controller.dart';

class WelcomeView extends GetView<WelcomeController> {
  const WelcomeView({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.white,
      body: Obx(() {
        if(controller.error.value.isNotEmpty) {
          String mess = controller.error.value;
          controller.error.value = '';
          Future.delayed(Duration.zero, () async {
            bool? result = await controllers.dialog.showNormalDialog(
              title: "提示",
              content: mess,
              cancelText: "取消",
              enterText: "确认",
            );
            if (result != null && result) {
              // User pressed "确认"
              await controller.fetchSysConfig();
            } else {

            }
          });
        }
        if(controller.isUPdateVerion.value){
          controller.isUPdateVerion.value = false;
          Future.delayed(Duration.zero, () async {
            bool? result = await controllers.dialog.showNormalDialog(
              title: "提示",
              content: controller.verModes.value.appmsg ?? "有更新",
              cancelText: "取消",
              enterText: "确认",
            );
            if (result != null && result) {
              // User pressed "确认"
              if(controller.verModes.value.appdownload != null){
                await launchUrl(Uri.parse(controller.verModes.value.appdownload ?? ""));
                await controller.fetchSysConfig();
              }

            } else {
              await controller.fetchSysConfig();
            }
          });
        }
        return Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
             controller.isLoading.value == true ? const CircularProgressIndicator() : Container(), // 菊花加载指示器
              const SizedBox(height: 20), // 用于给加载指示器和文字之间增加一些空间
              Text(
                controller.msgStatus.value,
                style: const TextStyle(
                  fontSize: 16,
                  fontWeight: FontWeight.w600,
                ),
              ),
            ],
          ), // 当不在加载时，你可能想要显示其他的 Widget
        );

      }),
    );
  }
}