huixiang_app/lib/view_widget/channel_dialog.dart

import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
import 'package:huixiang/generated/l10n.dart';
import 'package:huixiang/utils/flutter_utils.dart';
import 'package:huixiang/utils/font_weight.dart';

import '../retrofit/data/base_data.dart';
import '../retrofit/data/channels_list.dart';
import '../retrofit/retrofit_api.dart';

class ChannelDialog extends StatefulWidget {

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

}

class _ChannelDialog extends State<ChannelDialog> {
  ApiService apiService;
  ChannelsList channelsList;
  int channelIndex = 0;

  @override
  void initState() {
    super.initState();
    EasyLoading.show(status: S.current.zhengzaijiazai,maskType: EasyLoadingMaskType.black);
    queryChannels();
  }

  queryChannels() async{
    apiService = ApiService(Dio(), context: context);
    BaseData<ChannelsList> baseData = await apiService.appChannels().catchError((error) {
      print(error.message);
      SmartDialog.showToast(AppUtils.dioErrorTypeToString(error.type),
          alignment: Alignment.center);
    });
    if (baseData != null && baseData.isSuccess) {
      channelsList = baseData.data;
      setState((){});
      EasyLoading.dismiss();
    } else {
      if (baseData?.msg != null)
        SmartDialog.showToast(baseData.msg, alignment: Alignment.center);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Material(
      type: MaterialType.transparency,
      child: Center(
        child: Container(
          margin: EdgeInsets.symmetric(horizontal: 14.w),
          decoration: BoxDecoration(
            color: Colors.transparent,
            borderRadius: BorderRadius.circular(8.r),
          ),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              Container(
                decoration: BoxDecoration(
                    color: Colors.white,
                    borderRadius: BorderRadius.circular(8.w),
                    gradient:LinearGradient(
                      colors:[
                        Color(0xFFDFFFED),
                        Color(0xFFFFFFFF),
                      ],
                      begin: Alignment.topLeft,
                      end: Alignment.bottomLeft,
                    )
                ),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Stack(
                      alignment: Alignment.topRight,
                      children: [
                        Row(
                          children: [
                            SizedBox(width: 11.w,),
                            Column(
                              crossAxisAlignment: CrossAxisAlignment.start,
                              children: [
                                Image.asset(
                                  "assets/image/channel_text.webp",
                                  width: 138.w,
                                  height:24.h,
                                  fit: BoxFit.fill,
                                ),
                                Padding(padding: EdgeInsets.only(top: 11.h),child: Text(
                                  "您是通过什么途径注册的呢？",
                                  style: TextStyle(
                                    fontSize: 15.sp,
                                    fontWeight: MyFontWeight.bold,
                                    color: Color(0xFF353535),
                                  ),
                                ),),
                              ],
                            ),
                            Spacer(),
                            Image.asset(
                              "assets/image/channel_logo.webp",
                              width: 89.w,
                              height:93.h,
                              fit: BoxFit.fill,
                            ),
                            SizedBox(width: 24.w,)
                          ],
                        ),
                        Container(
                          margin: EdgeInsets.only(top: 24.h,right: 113.w),
                          child:Image.asset(
                            "assets/image/channel_jt.webp",
                            width: 62.w,
                            height:15.h,
                            fit: BoxFit.fill,
                          ),
                        ),
                      ],
                    ),
                    ConstrainedBox(
                      constraints: BoxConstraints(
                          maxHeight:260.h),
                      child: Container(
                        decoration: BoxDecoration(
                          color: Colors.white,
                          borderRadius: BorderRadius.circular(8.w),
                        ),
                        margin: EdgeInsets.only(left:12.w,right: 12.w,bottom: 19.h),
                        child:ListView.builder(
                            padding: EdgeInsets.only(top: 16.h),
                            itemCount: (channelsList != null && (channelsList?.channels?.length ?? 0) > 0) ? channelsList.channels.length : 0,
                            shrinkWrap: true,
                            physics: BouncingScrollPhysics(),
                            itemBuilder: (context, position) {
                              return GestureDetector(
                                behavior: HitTestBehavior.opaque,
                                onTap: () {
                                  setState(() {
                                    channelIndex = position;
                                  });
                                },
                                child: channelItem(position),
                              );
                            }),
                      ),
                    ),
                    if(channelsList != null && (channelsList.channels.length) > 0)
                    Align(
                      alignment:Alignment.center,
                      child: GestureDetector(
                        behavior: HitTestBehavior.opaque,
                        onTap: (){
                          Navigator.of(context).pop();
                        },
                        child: Text(
                          "我选好了",
                          style: TextStyle(
                            fontSize: 16.sp,
                            fontWeight: MyFontWeight.bold,
                            color: Color(0xFF32A060),
                          ),
                        ),
                      ),
                    ),
                    SizedBox(height: 16.h,)
                  ],
                ),
              )
            ],
          ),
        ),
      ),
    );
  }

  Widget channelItem(index){
    return Container(
      padding: EdgeInsets.only(left:14.w,right: 14.w,bottom: 18.h),
      child: Row(
        children: [
          Expanded(child: Text(
            channelsList.channels[index],
            style: TextStyle(
              fontSize: 15.sp,
              fontWeight: MyFontWeight.bold,
              color: channelIndex == index ? Color(0xFF32A060):Color(0xFF353535),
            ),
          )),
          Image.asset(
            channelIndex == index
                ? "assets/image/icon_radio_selected.webp"
                : "assets/image/icon_radio_unselected.webp",
            width: 15.w,
            height: 15.h,
          ),
        ],
      ),
    );
  }
}