Flutter质感设计之进度条设计教程

import 'package:flutter/material.dart';
class ActionViewEcology extends StatelessWidget {
 /*
  * 构建函数，传递参数
  * 最大能量值
  * 最大饥饿值
  * 最大情绪值
  * 当前能量值
  * 当前饥饿值
  * 当前情绪值
  */
 ActionViewEcology({
  this.maximumEmergy,
  this.maximumHunger,
  this.maximumMood,
  this.currentEmergy,
  this.currentHunger,
  this.currentMood,
 });
 int maximumEmergy;
 int maximumHunger;
 int maximumMood;
 int currentEmergy;
 int currentHunger;
 int currentMood;
 // 获取进度条描述文本
 Align _getNameText(BuildContext context, String text) {
  return new Align(
   alignment: FractionalOffset.topLeft,
   child: new Text(
    text,
    style: new TextStyle(
     fontSize: 15.0,
     color: Colors.black,
     height: 1.5,
    )
   )
  );
 }
 @override
 Widget build(BuildContext context) {
  return new Container(
   margin: const EdgeInsets.fromLTRB(17.0, 0.0, 17.0, 10.0),
   child: new Column(
    children:  [
     _getNameText(context, '能量（$currentEmergy/$maximumEmergy）'),
     new LinearProgressIndicator(value: currentEmergy/maximumEmergy),
     _getNameText(context, '饥饿（$currentHunger/$maximumHunger）'),
     new LinearProgressIndicator(value: currentHunger/maximumHunger),
     _getNameText(context, '心情（$currentMood/$maximumMood）'),
     new LinearProgressIndicator(value: currentMood/maximumMood),
    ]
   )
  );
 }
}