[移动开发]Flutter封装弹框、提示工具类【基于fluttertoast】

提示

已将代码上传至gitee，后续会继续更新学习封装的一些组件：
flutter练习

实现效果

实现

• 1.先在pubspec.yaml文件汇总引入fluttertoast的包：

fluttertoast: ^8.0.8 # 弹窗

• 2.封装弹框工具类DialogUtils:

import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';

/// @author longzipeng
/// @创建时间：2022/2/24
/// 封装自定义弹框
class DialogUtils {
  /// 基础弹框
  static alert(
    BuildContext context, {
    String title = "提示",
    String content = "",
    GestureTapCallback? confirm,
    GestureTapCallback? cancle,
    List<Widget>? actions, // 自定义按钮
  }) {
    showDialog(
        context: context,
        builder: (context) {
          return AlertDialog(
            title: Text(
              '提示',
              style: TextStyle(color: Theme.of(context).primaryColor),
            ),
            content: Text(content),
            actions: actions ??
                <Widget>[
                  InkWell(
                    onTap: () {
                      if (cancle != null) {
                        cancle();
                      }
                      Navigator.of(context).pop();
                    },
                    child: const Padding(
                      padding: EdgeInsets.only(right: 20),
                      child: Text(
                        "取消",
                        style: TextStyle(color: Colors.grey),
                      ),
                    ),
                  ),
                  InkWell(
                    onTap: () {
                      if (confirm != null) {
                        confirm();
                      }
                      Navigator.of(context).pop();
                    },
                    child: Padding(
                      padding: const EdgeInsets.only(right: 10),
                      child: Text(
                        "确定",
                        style: TextStyle(color: Theme.of(context).primaryColor),
                      ),
                    ),
                  )
                ],
          );
        });
  }

  /// 弹出关于界面
  static alertAboutDialog(BuildContext context) {
    showAboutDialog(
      context: context,
      applicationIcon: FlutterLogo(),
      applicationName: 'flutterdemo',
      applicationVersion: '1.0.0',
      applicationLegalese: 'copyright 编程小龙',
      children: <Widget>[
        Container(
          height: 70,
          child: const Text(
            "总而言之，言而总之，时而不知，终究自知",
            maxLines: 2,
            style: TextStyle(),
          ),
        ),
      ],
    );
  }

  /// 显示普通消息
  static showMessage(String msg,
      {toastLength: Toast.LENGTH_SHORT,
      gravity: ToastGravity.CENTER,
      timeInSecForIosWeb: 1,
      backgroundColor: Colors.grey,
      fontSize: 16.0}) {
    // 先关闭弹框再显示对应弹框
    Fluttertoast.cancel();
    Fluttertoast.showToast(
        msg: msg,
        toastLength: toastLength,
        gravity: gravity,
        timeInSecForIosWeb: timeInSecForIosWeb,
        backgroundColor: backgroundColor,
        fontSize: fontSize);
  }

  /// 显示错误消息
  static showErrorMessage(String msg,
      {toastLength: Toast.LENGTH_SHORT,
      gravity: ToastGravity.CENTER,
      timeInSecForIosWeb: 1,
      backgroundColor: Colors.red,
      fontSize: 16.0}) {
    showMessage(msg,
        toastLength: toastLength,
        gravity: gravity,
        timeInSecForIosWeb: timeInSecForIosWeb,
        backgroundColor: backgroundColor,
        fontSize: fontSize);
  }

  /// 显示警告信息
  static showWaringMessage(String msg,
      {toastLength: Toast.LENGTH_SHORT,
      gravity: ToastGravity.CENTER,
      timeInSecForIosWeb: 1,
      backgroundColor: Colors.orangeAccent,
      fontSize: 16.0}) {
    showMessage(msg,
        toastLength: toastLength,
        gravity: gravity,
        timeInSecForIosWeb: timeInSecForIosWeb,
        backgroundColor: backgroundColor,
        fontSize: fontSize);
  }
  /// 显示成功消息
  static showSuccessMessage(String msg,
      {toastLength: Toast.LENGTH_SHORT,
        gravity: ToastGravity.CENTER,
        timeInSecForIosWeb: 1,
        backgroundColor: Colors.greenAccent,
        fontSize: 16.0}) {
    showMessage(msg,
        toastLength: toastLength,
        gravity: gravity,
        timeInSecForIosWeb: timeInSecForIosWeb,
        backgroundColor: backgroundColor,
        fontSize: fontSize);
  }
}

测试

注意：这里ListTitleWidget是自己封装的组件，直接改为ListTitle就不会报错了

import 'package:csdn_flutter_demo/pages/common/common_appbar.dart';
import 'package:csdn_flutter_demo/utils/dialog_utils.dart';
import 'package:csdn_flutter_demo/widgets/list_title_widgets.dart';
import 'package:flutter/material.dart';

/// @author longzipeng
/// @创建时间：2022/3/31
/// 弹框演示页面

class DialogUtilsDemoPage extends StatefulWidget {
  const DialogUtilsDemoPage({Key? key}) : super(key: key);

  @override
  State<DialogUtilsDemoPage> createState() => _DialogUtilsDemoPageState();
}

class _DialogUtilsDemoPageState extends State<DialogUtilsDemoPage> {
  /// 查询数据
  search(value) {
    print("搜索的值为：$value");
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: const CommonAppbar(
        title: "弹窗、提示演示",
      ),
      body: ListView(
        children: [
          ListTitleWidget(
            title: const Text("弹框，带确认和取消"),
            onTap: () {
              DialogUtils.alert(context, content: "靓仔、靓女们，一起学习flutter！",
                  confirm: () {
                print("点击了确认");
              }, cancle: () {
                print("点击了取消");
              });
            },
          ),
          ListTitleWidget(
            title: const Text("默认提示"),
            onTap: () {
              DialogUtils.showMessage("默认提示");
            },
          ),
          ListTitleWidget(
            title: const Text("成功提示"),
            onTap: () {
              DialogUtils.showSuccessMessage("成功提示");
            },
          ),
          ListTitleWidget(
            title: const Text("警告提示"),
            onTap: () {
              DialogUtils.showWaringMessage("警告提示");
            },
          ),
          ListTitleWidget(
            title: const Text("错误提示"),
            onTap: () {
              DialogUtils.showErrorMessage("错误提示");
            },
          ),
        ],
      ),
    );
  }
}