Flutter多功能选择器插件onepicker的使用

特性

• 日期选择器
• 日期范围选择器
• 国家选择器

开始使用

要使用此插件，请在 pubspec.yaml 文件中添加 onepicker 作为依赖项。

在 pubspec.yaml 中添加依赖

onepicker: ^0.1.6

导入 Dart 包

import 'package:onepicker/onepicker.dart';

使用日期选择器

OnePicker().date(
  context,
  selectedColor: Colors.green,
  bgColor: Colors.white,
  onTap: (value){
    dateSeleted = value.toString();
    setState(() {});
  }
);

使用日期范围选择器

OnePicker().dateRange(
  context,
  onTap: (from, to){
    dateFromSeleted = DateFormat('yyyy-MM-dd').format(from).toString();
    dateToSeleted = DateFormat('yyyy-MM-dd').format(to).toString();
    setState(() {});
  }
);

使用国家选择器

OnePicker().country(
  context,
  onTap: (value){
    countryFlagSeleted = value.flag;
    countryCodeSeleted = value.code;
    countryNameSeleted = value.name;
    setState(() {});
  }
);

示例代码

以下是一个完整的示例代码，展示了如何在 Flutter 应用程序中使用 onepicker 插件。

import 'package:flutter/material.dart';
import 'package:onepicker/onepicker.dart';
import 'package:intl/intl.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'One Picker',
      theme: ThemeData(
        primarySwatch: Colors.green,
        primaryColor: Colors.green,
      ),
      home: const MyHomePage(title: 'One Picker'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

  [@override](/user/override)
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String dateSeleted = " - ";
  String dateFromSeleted = " - ";
  String dateToSeleted = " - ";
  String countryFlagSeleted = " - ";
  String countryCodeSeleted = " - ";
  String countryNameSeleted = " - ";

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            Text(
              'Selected Date: $dateSeleted',
              style: Theme.of(context).textTheme.titleLarge,
              textAlign: TextAlign.center,
            ),
            const SizedBox(height: 10),
            GestureDetector(
              onTap: () {
                OnePicker().date(
                  context,
                  selectedColor: Colors.green,
                  bgColor: Colors.white,
                  onTap: (value) {
                    dateSeleted = DateFormat('yyyy-MM-dd').format(value).toString();
                    setState(() {});
                  }
                );
              },
              child: Container(
                padding: const EdgeInsets.all(10),
                decoration: BoxDecoration(
                  border: Border.all(
                    color: Colors.green,
                    width: 4
                  ),
                  borderRadius: const BorderRadius.all(Radius.circular(50))
                ),
                child: const Text(
                  'Date Picker',
                  style: TextStyle(color: Colors.green, fontSize: 20, fontWeight: FontWeight.bold),
                  textAlign: TextAlign.center,
                )
              ),
            ),
            const SizedBox(height: 20),
            Text(
              'Selected Date Range: $dateFromSeleted to $dateToSeleted',
              style: Theme.of(context).textTheme.titleLarge,
              textAlign: TextAlign.center,
            ),
            const SizedBox(height: 10),
            GestureDetector(
              onTap: () {
                OnePicker().dateRange(
                  context,
                  onTap: (from, to) {
                    dateFromSeleted = DateFormat('yyyy-MM-dd').format(from).toString();
                    dateToSeleted = DateFormat('yyyy-MM-dd').format(to).toString();
                    setState(() {});
                  }
                );
              },
              child: Container(
                padding: const EdgeInsets.all(10),
                decoration: BoxDecoration(
                  border: Border.all(
                    color: Colors.green,
                    width: 4
                  ),
                  borderRadius: const BorderRadius.all(Radius.circular(50))
                ),
                child: const Text(
                  'Date Range Picker',
                  style: TextStyle(color: Colors.green, fontSize: 20, fontWeight: FontWeight.bold),
                  textAlign: TextAlign.center,
                )
              ),
            ),
            const SizedBox(height: 20),
            Text(
              'Selected Country'
                  '\n Flag: $countryFlagSeleted'
                  '\n Code: $countryCodeSeleted'
                  '\n Name: $countryNameSeleted'
                  '',
              style: Theme.of(context).textTheme.titleLarge,
              textAlign: TextAlign.left,
            ),
            const SizedBox(height: 10),
            GestureDetector(
              onTap: () {
                OnePicker().country(
                  context,
                  onTap: (value) {
                    countryFlagSeleted = value.flag;
                    countryCodeSeleted = value.code;
                    countryNameSeleted = value.name;
                    setState(() {});
                  }
                );
              },
              child: Container(
                padding: const EdgeInsets.all(10),
                decoration: BoxDecoration(
                  border: Border.all(
                    color: Colors.green,
                    width: 4
                  ),
                  borderRadius: const BorderRadius.all(Radius.circular(50))
                ),
                child: const Text(
                  'Country Picker',
                  style: TextStyle(color: Colors.green, fontSize: 20, fontWeight: FontWeight.bold),
                  textAlign: TextAlign.center,
                )
              ),
            ),
          ],
        ),
      ),
    );
  }
}