[英]In Flutter, How can I change TextFormField validation error line style?
I want to set a different color for the error line created by the validator in TextFormField but I don't know how...我想为 TextFormField 中的验证器创建的错误行设置不同的颜色,但我不知道如何...
Change the color and the width to your likings providing errorBorder
and focusedErrorBorder
inside InputDecoration
as decoration for TextFormField
:根据您的喜好更改颜色和宽度,在
InputDecoration
中提供errorBorder
和focusedErrorBorder
作为TextFormField
的装饰:
TextFormField(
decoration: InputDecoration(
focusedErrorBorder:UnderlineInputBorder(
borderSide: const BorderSide(color: Colors.blue, width: 2.0))
errorBorder: UnderlineInputBorder(
borderSide: const BorderSide(color: Colors.blue, width: 2.0),
),
),
),
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