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【Flutter】TextFieldのPlaceholderに文字色をセットしたい

Last updated at Posted at 2025-10-16

やりたいこと

  • TextFieldhintTextのプレースホルダに色を設定したい。
edit_title_view.dart
TextFormField(
    controller: _titleController,
    hintText: "put something here",
    onFieldSubmitted: (value){},
)

解決策

  • InputDecorationhintStyleTextStyleの型を継承しているため通常のTextと同様に加工をすることが出来る。
edit_title_view.dart
TextFormField(
    controller: _titleController,
    hintText: "put something here",
    hintStyle: TextStyle(
        color: Colors.grey,
        fontSize: 10
    ),
    onFieldSubmitted: (value){},
)
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