huixiang_app/lib/mine/edit_name.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
import 'package:huixiang/view_widget/my_appbar.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

class EditName extends StatefulWidget {
  final Map<String, dynamic> arguments;

  EditName({this.arguments});

  @override
  State<StatefulWidget> createState() {
    return _EditName();
  }
}

class _EditName extends State<EditName> {
  TextEditingController _controller = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: MyAppBar(
        title: "修改用户名",
        titleColor: Colors.black,
        leadingColor: Colors.black,
        background: Colors.white,
        action: Container(
          alignment: Alignment.center,
          margin: EdgeInsets.only(right: 16.w),
          child: GestureDetector(
            onTap: () {
              String name = _controller.text;
              if (name != null && name != "") {
                Navigator.of(context).pop(name);
              } else {
                SmartDialog.showToast("请输入用户名", alignment: Alignment.center);
              }
            },
            child: Text(
              "保存",
              style: TextStyle(
                  color: Colors.black,
                  fontSize: 18.sp,
                  fontWeight: FontWeight.bold),
            ),
          ),
        ),
      ),
      body: Container(
        margin: EdgeInsets.all(16),
        child: Column(
          children: [
            TextField(
              style: TextStyle(
                height: 1.h,
                fontSize: 16.sp,
              ),
              onChanged: (value) {},
              controller: _controller,
              keyboardType: TextInputType.text,
              decoration: InputDecoration(
                errorBorder: InputBorder.none,
                focusedBorder: InputBorder.none,
                enabledBorder: InputBorder.none,
                hintText: widget.arguments['nick'],
                // contentPadding: EdgeInsets.only(top: 12, bottom: 12, left: 12),
                hintStyle: TextStyle(
                  fontSize: 10.sp,
                  color: Color(0xFFA29E9E),
                ),
              ),
              textInputAction: TextInputAction.next,
              inputFormatters: [LengthLimitingTextInputFormatter(10)],
              maxLines: 1,
            ),
            Container(
              height: 1.h,
              color: Color(0xFF32A060),
            ),
          ],
        ),
      ),
    );
  }
}