lib/login/loginpage/login_page.dart

import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:wow_english/common/extension/string_extension.dart';
import 'package:wow_english/common/widgets/textfield_customer_widget.dart';
import 'package:wow_english/login/loginpage/bloc/login_bloc.dart';
import 'package:wow_english/login/loginpage/time_widget.dart';
import 'package:wow_english/route/route.dart';
class LoginPage extends StatelessWidget {
  const LoginPage({super.key});
  @override
  Widget build(BuildContext context) {
    return BlocProvider(
      create: (context) => LoginBloc(),
      child: _buildLoginViewWidget(),
    );
  }
  Widget _buildLoginViewWidget() => BlocBuilder<LoginBloc,LoginState> (
    builder: (context, state) {
      final bloc = BlocProvider.of<LoginBloc>(context);
      return Scaffold(
        body: SafeArea(
          child: ListView(
            children: [
              Container(
                padding: EdgeInsets.only(top: 25.h),
                child: Stack(
                  children: [
                    Positioned(
                        right: 29.w,
                        child: GestureDetector(
                          onTap: () => bloc.add(ChangeLoginTypeEvent()),
                          child: Container(
                            decoration: BoxDecoration(
                              image: DecorationImage(
                                  image: AssetImage(
                                      'login_logo'.assetPng
                                  ),
                                  fit: BoxFit.fill
                              ),
                            ),
                            padding: const EdgeInsets.symmetric(horizontal: 18.0),
                            child:  Text(
                                bloc.loginType == LoginType.sms?'密码登陆':'验证码密码'
                            ),
                          ),
                        )
                    ),
                    Center(
                      child: Column(
                        children: [
                          Image.asset(
                            'wow_logo'.assetPng,
                            height: 81.h,
                            width: 131.w,
                          ),
                          Offstage(
                            offstage: bloc.loginType == LoginType.pwd,
                            child: _buildSmsViewWidget(),
                          ),
                          Offstage(
                            offstage: bloc.loginType == LoginType.sms,
                            child: _buildPwdViewWidget(),
                          ),
                          Row(
                            mainAxisAlignment: MainAxisAlignment.center,
                            children: [
                              GestureDetector(
                                onTap: () => bloc.add(AgreementChangeEvent()),
                                child: Icon(
                                    bloc.agreement ? Icons.check_circle_outlined:Icons.circle_outlined,
                                    color:bloc.agreement ? Colors.green:Colors.black),
                              ),
                              6.horizontalSpace,
                              RichText(
                                text: TextSpan(
                                    children:[
                                      const TextSpan(
                                          text: '我已阅读并同意',
                                          style: TextStyle(
                                            fontSize: 12,
                                            color: Color(0xFF333333),
                                          )
                                      ),
                                      TextSpan(
                                          text: '《用户隐私协议》',
                                          style: const TextStyle(
                                            fontSize: 12,
                                            color: Color(0xFF333333),
                                          ),
                                          recognizer: TapGestureRecognizer()..onTap = (){
                                            Navigator.of(context).pushNamed(
                                                AppRouteName.webView,
                                                arguments: {
                                                  'urlStr':'https://www.zhihu.com',
                                                  'webViewTitle':'用户隐私协议'
                                                });
                                          }),
                                      const TextSpan(
                                          text: '，',
                                          style: TextStyle(
                                              fontSize: 12,
                                              color: Color(0xFF333333)
                                          )
                                      ),
                                      TextSpan(
                                          text: '《儿童隐私政策》',
                                          style: const TextStyle(
                                              fontSize: 12,
                                              color: Color(0xFF333333)
                                          ),
                                          recognizer: TapGestureRecognizer()..onTap = (){
                                            Navigator.of(context).pushNamed(
                                                AppRouteName.webView,
                                                arguments: {
                                                  'urlStr':'https://www.zhihu.com',
                                                  'webViewTitle':'儿童隐私协议'
                                                });
                                          })
                                    ]
                                ),
                              )
                            ],
                          ),
                          GestureDetector(
                            onTap: () {
                              if (bloc.canLogin) {
                                bloc.add(RequestLoginEvent());
                              }
                            },
                            child: Container(
                              decoration: BoxDecoration(
                                image: DecorationImage(
                                    image: AssetImage(
                                        bloc.canLogin?'login_enter'.assetPng:'login_enter_dis'.assetPng
                                    ),
                                    fit: BoxFit.fill
                                ),
                              ),
                              padding: const EdgeInsets.symmetric(
                                  horizontal: 28.0,
                                  vertical: 14.0
                              ),
                              child:  const Text(
                                  '登录'
                              ),
                            ),
                          )
                        ],
                      ),
                    )
                  ],
                ),
              )
            ],
          ),
        ),
      );
    },
  );
  Widget _buildSmsViewWidget()=> BlocBuilder<LoginBloc,LoginState>(
      builder: (context,state) {
        final bloc = BlocProvider.of<LoginBloc>(context);
        return Padding(
          padding: EdgeInsets.symmetric(horizontal: 135.w),
          child: Column(
            children: [
              15.verticalSpace,
              TextFieldCustomerWidget(
                height: 55.h,
                hitText: '请输入手机号',
                textInputType: TextInputType.phone,
                bgImageName: 'Input_layer_up',
                onChangeValue: (String value) {
                  bloc.add(PhoneNumChangeEvent());
                },
                controller: bloc.phoneNumController,
              ),
              6.5.verticalSpace,
              const Text('未注册用户登录默认注册'),
              4.5.verticalSpace,
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Expanded(
                      child: TextFieldCustomerWidget(
                        height: 50.h,
                        hitText: '请输入验证码',
                        textInputType: TextInputType.number,
                        bgImageName: 'Input_layer_down',
                        onChangeValue: (String value) {
                          bloc.add(CheckFieldChangeEvent());
                        },
                        controller: bloc.checkNumController,
                      )
                  ),
                  TimerWidget(
                      canSendSms: bloc.canSendSms)
                ],
              )
            ],
          ),
        );
      });
  Widget _buildPwdViewWidget()=> BlocBuilder<LoginBloc,LoginState>(
      builder: (context,state){
        final bloc = BlocProvider.of<LoginBloc>(context);
        return Padding(
          padding: EdgeInsets.symmetric(horizontal: 90.w),
          child: Column(
            children: [
              15.verticalSpace,
              Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Image.asset(
                    'phone'.assetPng,
                    height: 45.h,
                    width: 35.w,
                  ),
                  10.5.horizontalSpace,
                  Expanded(
                      child: TextFieldCustomerWidget(
                        height: 50.h,
                        hitText: '请输入手机号',
                        textInputType: TextInputType.phone,
                        bgImageName: 'Input_layer_up',
                        onChangeValue: (String value) {
                          bloc.add(PhoneNumChangeEvent());
                        },
                        controller: bloc.phoneNumController,
                      )
                  ),
                  5.horizontalSpace,
                  SizedBox(
                    width: 100.w,
                    height: 55.h,
                  )
                ],
              ),
              12.verticalSpace,
              Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Image.asset(
                    'lock'.assetPng,
                    height: 34.h,
                    width: 31.w,
                  ),
                  10.5.horizontalSpace,
                  Expanded(
                      child: TextFieldCustomerWidget(
                        hitText: '请输入密码',
                        bgImageName: 'Input_layer_down',
                        onChangeValue: (String value) {
                          bloc.add(CheckFieldChangeEvent());
                        },
                        controller: bloc.checkNumController,
                      )
                  ),
                  5.horizontalSpace,
                  GestureDetector(
                    onTap: () {
                      Navigator.of(context).pushNamed(AppRouteName.fogPwd);
                    },
                    child: Container(
                      width: 100.w,
                      height: 55.h,
                      alignment: Alignment.centerLeft,
                      child: const Text(
                          '忘记密码 ?'
                      ),
                    ),
                  )
                ],
              )
            ],
          ),
        );
      });
}