Fiji/ysairplane3/lib/code/YSSearch.dart

import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:ysairplane2/code/YSSearchResult.dart';
import 'package:ysairplane2/tools/YSNetWorking.dart';
import 'package:ysairplane2/tools/YSTools.dart';

class YSSearch extends StatefulWidget {
  @override
  _YSSearchState createState() => _YSSearchState();
}

class _YSSearchState extends State<YSSearch> {
  TextEditingController _searchStr = TextEditingController();
  List<String> _historyList = [];
  @override
  void initState() {
    SharedPreferences.getInstance().then((value){
      setState(() {
        _historyList = value.getStringList('history')??[];
      });
    });
    super.initState();
  }
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.white,
      body: SingleChildScrollView(
        child: Container(
          width: MediaQuery.of(context).size.width,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Container(
                margin: EdgeInsets.only(top: MediaQuery.of(context).padding.top+hsp(42),left: wsp(32),right: wsp(22)),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Container(
                      width: MediaQuery.of(context).size.width-wsp(130),
                      padding: EdgeInsets.only(left: wsp(26),right: wsp(26)),
                      height: hsp(66),
                      decoration: BoxDecoration(
                        border: Border.all(color: Color(0xFF007AFF),width: 1),
                        borderRadius: BorderRadius.all(Radius.circular(5))
                      ),
                      child: CupertinoTextField(
                        placeholder: '请输入搜索内容',
                        placeholderStyle: TextStyle(fontSize: zsp(25),color: Color(0xFF545454)),
                        style: TextStyle(fontSize: zsp(25),color: Color(0xFF545454)),
                        prefix: Icon(Icons.search,size: hsp(40),color: Color(0xFF8E8E93),),
                        suffix: GestureDetector(child: Icon(Icons.close,size: hsp(40),color: Color(0xFF8E8E93),),onTap: (){
                          _searchStr.text = '';
                          searchKey.currentState.getSearchWordData('');
                        },),
                        suffixMode: OverlayVisibilityMode.editing,
                        controller: _searchStr,
                        padding: EdgeInsets.all(0),
                        decoration: BoxDecoration(),
                        onChanged: (value) async{
                          searchKey.currentState.getSearchWordData(value);
                        },
                        onSubmitted: (value){
                          if(value.isNotEmpty){
                            if(_historyList.contains(value)){
                              _historyList.remove(value);
                            }
                            _historyList.insert(0, value);
                            SharedPreferences.getInstance().then((prefer){
                              prefer.setStringList('history', _historyList);
                              setState(() {});
                              Navigator.of(context).push(
                                CupertinoPageRoute(
                                  builder: (context){
                                    return YSSearchResult(searchStr: value,);
                                  }
                                )
                              );
                            });
                          }
                        },
                        textInputAction: TextInputAction.search,
                      ),
                    ),
                    GestureDetector(child: Text('取消',style: TextStyle(fontSize: zsp(30),color: Color(0xFF444444)),),onTap: (){Navigator.pop(context);},)
                  ],
                ),
              ),
              Stack(
                children: [
                  Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Container(
                        child: Row(
                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
                          children: [
                            Text('定位/历史',style: TextStyle(fontSize: zsp(24),color: Color(0xFF9A9A9A)),),
                            GestureDetector(
                              child: Icon(Icons.delete,color: Color(0xFFE0E0E0),size: hsp(40),),
                              onTap: (){
                                SharedPreferences.getInstance().then((prefer){
                                  _historyList = [];
                                  prefer.setStringList('history', _historyList);
                                  setState(() {

                                  });
                                });
                              },
                            )
                          ],
                        ),
                        padding: EdgeInsets.only(left: wsp(32),right: wsp(62),top: hsp(34),bottom: hsp(10)),
                      ),
                      Container(
                        height: MediaQuery.of(context).size.height-MediaQuery.of(context).padding.top-hsp(200),
                        child: SingleChildScrollView(
                          padding: EdgeInsets.only(left: wsp(16)),
                          child: Wrap(
                              alignment: WrapAlignment.start,
                              children: <Widget>[
                                for (int i =0;i<_historyList.length;i++ ) GestureDetector(
                                  behavior: HitTestBehavior.opaque,
                                  onTap: (){
                                    String value = _historyList[i];
                                    _historyList.remove(_historyList[i]);
                                    _historyList.insert(0, value);
                                    SharedPreferences.getInstance().then((prefer){
                                      prefer.setStringList('history', _historyList);
                                      setState(() {});
                                      Navigator.of(context).push(
                                          CupertinoPageRoute(
                                              builder: (context){
                                                return YSSearchResult(searchStr: value,);
                                              }
                                          )
                                      );
                                    });
                                  },
                                  child: Container(
                                    margin: EdgeInsets.symmetric(vertical: hsp(16), horizontal: hsp(16)),
                                    decoration: BoxDecoration(
                                        color: Color(0xFFE0E0E0),
                                        borderRadius: BorderRadius.all(Radius.circular(3))
                                    ),
                                    padding: EdgeInsets.only(left: wsp(40), right: wsp(40),top: hsp(20),bottom: hsp(20)),
                                    child: Text('${_historyList[i]}', style: TextStyle(fontSize: zsp(26),color: Color(0xFF16181A)), textAlign: TextAlign.center,),
                                  ),
                                )
                              ]
                          ),
                        ),
                      )
                    ],
                  ),
                  YSSearchWordView(key: searchKey, historyList: _historyList,)
                ],
              )
            ],
          ),
        ),
        physics: NeverScrollableScrollPhysics(),
      ),
    );
  }
}

class YSSearchWordView extends StatefulWidget {
  final List historyList;
  final ValueSetter wordSetter;
  const YSSearchWordView({Key key, @required this.historyList, this.wordSetter}) : super(key: key);

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

GlobalKey<_YSSearchWordViewState> searchKey = GlobalKey();
GlobalKey<_YSSearchWordViewState> searchKey2 = GlobalKey();
class _YSSearchWordViewState extends State<YSSearchWordView> {
  List _dataArray = [];
  @override
  Widget build(BuildContext context) {
    return Container(
      child: ListView.separated(itemBuilder: (context,index){
        return GestureDetector(
          onTap: (){
            String value = _dataArray[index];
            if(widget.wordSetter!=null){
              widget.wordSetter(value);
            }else{
              if(widget.historyList.contains(value)){
                widget.historyList.remove(value);
              }
              widget.historyList.insert(0, value);
              SharedPreferences.getInstance().then((prefer){
                prefer.setStringList('history', widget.historyList);
                setState(() {});
                Navigator.of(context).push(
                  CupertinoPageRoute(
                    builder: (context){
                      return YSSearchResult(searchStr: value,);
                    }
                  )
                );
              });
            }
          },
          child: Container(
            width: MediaQuery.of(context).size.width,
            padding: EdgeInsets.all(hsp(30)),
            color: Colors.white,
            child: Text(_dataArray[index]),
          ),
        );
      },separatorBuilder: (context,index){
        return Divider(height: hsp(1),thickness: hsp(1),color: Colors.grey.withOpacity(0.1),);
      },itemCount: _dataArray.length,shrinkWrap: true,padding: EdgeInsets.all(0),),
    );
  }
  getSearchWordData(String word) async{
    if(word.isEmpty){
      _dataArray.clear();
    }else{
      Map dict = await ysRequestHttp(context,type: requestType.get,
          api: '/app/applets/AirTour/search_ideas',
          parameter: {'keyWords':word},isLoading: false,isToken: true,unfocus: false);
      if(dict!=null){
        _dataArray = dict['data'];
      }
    }
    setState(() {});
  }
}