flutter-go/lib/blocs/industry_main.dart

/**
 * Created with Android Studio.
 * User: 一晟
 * Date: 2019/4/28
 * Time: 3:52 PM
 * email: zhu.yan@alibaba-inc.com
 */
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import './industry_bloc.dart';
import './industry_event.dart';
import './industry_state.dart';

final SuggestionBloc suggestion = SuggestionBloc();

class IndustryPage extends StatefulWidget {
  final Function itemTitle;
  IndustryPage({Key key,this.itemTitle}) : super(key: key);

  @override
  _IndustryState createState() => _IndustryState();
}

class _IndustryState extends State<IndustryPage> {
  @override
  Widget build(BuildContext context) {
    return Material(
      child: Column(
        children: [
//          TextField(
//            autofocus: true,
//            textAlign: TextAlign.center,
//            onSubmitted: (text) {
//              print('onSubmitted:${text}');
//              suggestion.dispatch(SuggestionFetch(query: text));
//            },
//          ),
          Expanded(
            child: BlocBuilder(
              bloc: suggestion,
              builder: (BuildContext context, SuggestionState state) {
                print('BlocBuilder----${state}');
                if (state is SuggestionUninitialized) {
                  return Center(
                    child: Text('暂无内容'),
                  );
                } else if (state is SuggestionLoading) {
                  return Center(
                    child: CircularProgressIndicator(),
                  );
                } else if (state is SuggestionError) {
                  return Center(
                    child: Text('出现错误'),
                  );
                } else if (state is SuggestionLoaded) {
                  if (state.res.length == 0) {
                    return Center(
                      child: Text('没有适合的结果,更换查询条件试试'),
                    );
                  }else {
                    if (widget.itemTitle is Function) {
                      return widget.itemTitle(state);
                    }
                  }
                }
              },
            ),
          ),
        ],
      ),
    );
  }

  @override
  void dispose() {
    //suggestion.dispose();//添加这个第二次进入会失灵
    super.dispose();
  }
}