制作可重用的顫動小部件-有解無憂

我是 flutter 新手，我一直在嘗試使我的自定義小部件可重復使用，但一直在死胡同...我希望能夠使用更改圖示的顏色、卡片中的文本、第一張卡片以及隨附的卡片...此外，我應該能夠更改圖示、圖示內的文本以及每個按鈕的點擊功能應該能夠在點擊時執行不同的操作

class _CustomCardState extends State<CustomCard> { @override Widget build(BuildContext context) { return Card( margin: EdgeInsets.fromLTRB(20, 10, 20, 1), color: Colors.red, child: InkWell( onTap: (){}, child: ListTile( leading: Card( color: Colors.white, margin: EdgeInsets.all(5), child: Padding( padding: EdgeInsets.all(8.0), child: Icon( KycIcons.add_a_photo, size: 20, color: Colors.red, ), ), ), title: Text('Uplaod your selfie', style: TextStyle(color: Colors.white, fontSize: 16)), ), ), ); } }

uj5u.com熱心網友回復：

這是一個非常簡單的示例，說明如何構建可重用的小部件：

import 'package:flutter/material.dart';

class ContainerMain extends StatelessWidget {
  String text;
  Color color; 

  ContainerMain(this.text, {this.color = Colors.white});

  @override
  Widget build(BuildContext context) {
    Size size = MediaQuery.of(context).size;
    return Container(
      alignment: Alignment.center,
      height: size.height / 10,
      width: size.width,
      child: Text(
        text,
        style: TextStyle(fontSize: 20, color: color),
      ),
    );
  }
}

uj5u.com熱心網友回復：

這是我對您班級的貢獻。順便說一句，它應該是 aStatelessWidget而不是 aStatefulWidget因為不涉及狀態變數。

import 'package:flutter/material.dart';

class CustomCard extends StatefulWidget {
  final Color iconColor;
  final double iconSize;
  final Color cardColor;
  final Color innerCardColor;
  final String title;
  final TextStyle style;
  final void Function()? onTap;

  const CustomCard({
    Key? key,
    this.iconColor = Colors.red,
    this.iconSize = 20.0,
    this.cardColor = Colors.red,
    this.innerCardColor = Colors.white,
    this.title = 'Upload your selfie',
    this.style = const TextStyle(color: Colors.white, fontSize: 16),
    this.onTap,
  }) : super(key: key);

  @override
  _CustomCardState createState() => _CustomCardState();
}

class _CustomCardState extends State<CustomCard> {
  @override
  Widget build(BuildContext context) {
    return Card(
      margin: const EdgeInsets.fromLTRB(20, 10, 20, 1),
      color: widget.cardColor,
      child: InkWell(
        child: ListTile(
          leading: Card(
            color: widget.innerCardColor,
            margin: const EdgeInsets.all(5),
            child: Padding(
              padding: const EdgeInsets.all(8.0),
              child: Icon(
                KycIcons.add_a_photo,
                size: iconSize,
                color: widget.iconColor,
              ),
            ),
          ),
          title: Text(widget.title, style: widget.style),
          onTap: widget.onTap,
        ),
      ),
    );
  }
}

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