mobileCyberGamesApp/lib/pages/loginFirst.dart

import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:flutter/cupertino.dart';
import '../styles/colors.dart';
import 'dart:ui';
import '../styles/totast.dart';
import '../styles/api.dart';
import 'loginSecond.dart'; //登录第二页面

class LoginFirst extends StatefulWidget {
  @override
  LoginFirstState createState() => LoginFirstState();
}

class LoginFirstState extends State<LoginFirst> {
  String inputVal;

  @override
  Widget build(BuildContext context) {
    return new WillPopScope(
        child: Scaffold(
            body: Container(
          color: BG_SUB_COLOR,
          child: CustomScrollView(
            slivers: <Widget>[
              SliverAppBar(
                backgroundColor: BG_SUB_COLOR,
                centerTitle: true,
                elevation: 0,
                leading: Container(),
              ),
              SliverToBoxAdapter(
                child: Container(
                  width: double.infinity,
                  padding: EdgeInsets.symmetric(vertical: 20, horizontal: 15),
                  color: BG_SUB_COLOR,
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: <Widget>[
                      Text(
                        'LOGO',
                        style: TextStyle(
                          color: Colors.white,
                          fontSize: 64,
                        ),
                      ),
                      Container(
                        margin: EdgeInsets.only(top: 30),
                        child: Text('手机快捷登录',
                            style: TextStyle(
                                color: Colors.white,
                                fontSize: 28,
                                fontWeight: FontWeight.w500)),
                      ),
                      Container(
                          margin: EdgeInsets.only(top: 20),
                          child: TextField(
                              autofocus: true,
                              keyboardType: TextInputType.phone,
                              maxLength: 11,
                              style: TextStyle(
                                  color: Colors.white,
                                  fontSize: 18,
                                  fontWeight: FontWeight.w500),
                              decoration: InputDecoration(
                                  hintText: "输入手机号",
                                  hintStyle: TextStyle(
                                    fontSize: 16,
                                    color: Color(0xFF727785),
                                  ),
                                  prefixIcon: Container(
                                    padding: EdgeInsets.all(10),
                                    // color: PRIMARY_COLOR,
                                    child: Image.asset(
                                      'images/list_icon_shouji.png',
                                      width: 20,
                                    ),
                                  ),
                                  // suffixIcon:Container(
                                  //   padding: EdgeInsets.all(10),
                                  //   // color: PRIMARY_COLOR,
                                  //   child: Image.asset(
                                  //     'images/list_icon_shouji.png',
                                  //     width: 20,
                                  //   ),
                                  // ),
                                  counterStyle: TextStyle(
                                      color: BG_SUB_COLOR, fontSize: 0)),
                              onChanged: (value) {
                                inputVal = value;
                              })),
                      Text('未注册的手机号验证后自动创建账户',
                          style: TextStyle(
                              color: Color(0xFF727785), fontSize: 13)),
                      Container(
                        margin: EdgeInsets.symmetric(vertical: 22),
                        width: double.infinity,
                        height: 48,
                        child: FlatButton(
                          textColor: Colors.white,
                          color: PRIMARY_COLOR,
                          highlightColor: Color(0xFF763434),
                          child: Text("下一步"),
                          onPressed: () {
                            print(inputVal);
                            if (!checkPhone(inputVal)) {
                              Toast.show(context, '手机号格式错误', 1500, 'info');
                            } else {
                              Navigator.push(
                                context,
                                new CupertinoPageRoute(
                                  builder: (context) =>
                                      new LoginSecond(phone: inputVal),
                                ),
                              );
                            }
                          },
                        ),
                      )
                    ],
                  ),
                ),
              )
            ],
          ),
        )),
        onWillPop: ()  {
          Toast.hide();
          // Navigator.pop(context);
          return Future.value(false);
        });
  }
}