Flutter日期选择器插件moon_ruler_picker的使用

Flutter日期选择器插件moon_ruler_picker的使用

描述

此包为您提供了一个优秀的尺规选择器！
体验尺规选择器通过平滑的滑动手势平稳滑动，并自然停止！
可以通过设置加速度和阻力来自定义尺规选择器的移动行为。

开始使用

在您的 pubspec.yaml 文件中添加依赖：

flutter pub add moon_ruler_picker

使用方法

以下是一个简单的示例，展示了如何在Flutter应用中使用moon_ruler_picker。

示例代码

import 'package:flutter/material.dart';
import 'package:moon_ruler_picker/ruler_picker_lib.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'moon ruler-picker'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {

  double _doubleData = 0;
  int _intData = 0;
  MoonRulerLinesType rulerLinesType = MoonRulerLinesType.lineWithLabel;
  double longVerticalLineHeightRatio = 0.8;
  double shortVerticalLineHeightRatio = 0.55;
  double selectedVerticalLineHeightRatio = 1.2;

  [@override](/user/override)
  Widget build(BuildContext context) {

    return Scaffold(
      resizeToAvoidBottomInset: false,
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Form(
              child: TextFormField(
                controller: TextEditingController(text: _doubleData.toStringAsFixed(2)),
                key: UniqueKey(),
                onChanged: (data) {
                  _doubleData = double.tryParse(data) ?? 0;
                  _intData = _doubleData.floor();
                },
                onEditingComplete: () {
                  setState(() {});
                },
              ),
            ),

            Form(
              child: TextFormField(
                controller: TextEditingController(text: _intData.toString()),
                key: UniqueKey(),
                onChanged: (data) {
                  _doubleData = double.tryParse(data) ?? 0;
                  _intData = _doubleData.floor();
                },
                onEditingComplete: () {
                  setState(() {});
                },
              ),
            ),

            SizedBox(
              width: 400,
              height: 200,
              child: RulerPicker(
                  height: 200,
                  minNumber: 0,
                  maxNumber: 100,
                  longVerticalLineHeightRatio: longVerticalLineHeightRatio,
                  shortVerticalLineHeightRatio: shortVerticalLineHeightRatio,
                  selectedVerticalLineHeightRatio: selectedVerticalLineHeightRatio,
                  resistance: 1,
                  acceleration: 1,
                  linesType: rulerLinesType,
                  callbackDouble: (data) {
                    setState(() {
                      _doubleData = data;
                    });
                  },
                  callbackInt: (data) {
                    setState(() {
                      _intData = data;
                    });
                  },
                  initNumber: _doubleData,
                  borderWidth: 2,
                  pickedBarColor: Colors.red,
                  barColor: const Color(0XFF0180BE).withOpacity(0.3)
              ),
            ),

            const Spacer(),

            ElevatedButton(
                onPressed: () {
                  setState(() {
                    rulerLinesType = MoonRulerLinesType.circularLine;
                    longVerticalLineHeightRatio = 1;
                    shortVerticalLineHeightRatio = 0.85;
                    selectedVerticalLineHeightRatio = 1;
                  });
                },
                child: Text('尺规圆选择器')
            ),

            ElevatedButton(
                onPressed: () {
                  setState(() {
                    rulerLinesType = MoonRulerLinesType.line;
                    longVerticalLineHeightRatio = 0.8;
                    shortVerticalLineHeightRatio = 0.55;
                    selectedVerticalLineHeightRatio = 1.2;
                  });
                },
                child: Text('尺规线选择器')
            ),

            ElevatedButton(
                onPressed: () {
                  setState(() {
                    rulerLinesType = MoonRulerLinesType.lineWithLabel;
                    longVerticalLineHeightRatio = 0.8;
                    shortVerticalLineHeightRatio = 0.55;
                    selectedVerticalLineHeightRatio = 1.2;
                  });
                },
                child: Text('带标签的尺规线选择器')
            ),

            const Spacer(),

          ],
        ),
      ),
    );
  }
}