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TextFormFieldをたくさん並べるfileをすっきりさせる

Last updated at Posted at 2022-09-16

TextFormFieldをたくさん使うアプリをつくっているので 

 違うのはHintTextとonChangedのところだけなのに、設定でやたらfileが長くなるのを避けたい。
 ということで、設定を独立させてみました。 
 サイズや色を一括で変えられます。もしそれにもバリエションがほしければ、変数を増やすか、classを分けたらいいと思います。でも、変数をあまり増やすと、すっきり感は減ってしまいますね。

import 'package:flutter/material.dart';

class Format extends StatelessWidget {
  final String hintText;
  final ValueChanged<String> onChanged;

  const Format({
    required this.hintText,
    required this.onChanged,
    Key? key,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return TextFormField(
      textAlign: TextAlign.center,
      decoration: InputDecoration(
        contentPadding: const EdgeInsets.all(5.0),
        hintText: hintText,
        hintStyle: const TextStyle(
            fontSize: 14,
            color: Colors.green),
        fillColor: Colors.lightGreen[100],
        filled: true,
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(20),
          borderSide: const BorderSide(
            color: Colors.lightGreen,
            width: 2.0,
          ),
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(16),
          borderSide: const BorderSide(
            color: Colors.lightGreen,
            width: 1.0,
          ),
        ),
      ),
      onChanged: onChanged,
    );
  }
}

使うときはたったこれだけ 

child: Format(
         hintText: "Your Hint Text",
         onChanged: (text) {変数名 = text;
                            },
                  )

ああ、すっきりした。

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