您可以将圆角添加到
TextField的装饰参数内
TextField
new TextField( decoration: new InputDecoration( border: new OutlineInputBorder( borderRadius: const BorderRadius.all( const Radius.circular(10.0), ), ), filled: true, hintStyle: new TextStyle(color: Colors.grey[800]), hintText: "Type in your text", fillColor: Colors.white70),)



