The Personal plugin for Flutter uses cleanup

Time plugins and formatting

flutter_cupertino_date_picker+date_format

Reference:

Github.com/dylanwuzh/f…

www.cnblogs.com/yiweiyihang…

Calendar formatting plug-in date_format

Cloud.tencent.com/developer/a…

import 'package:date_format/date_format.dart';
import 'package:flutter_cupertino_date_picker/flutter_cupertino_date_picker.dart';
  void _showDatePicker() {
    DatePicker.showDatePicker(
      context,
      pickerTheme: DateTimePickerTheme(
        showTitle: true,
        confirm: Text('sure', style: TextStyle(color: Colors.red)),
        cancel: Text('cancel', style: TextStyle(color: Colors.cyan)),
      ),
      minDateTime: DateTime.parse("2019-05-21"),
//      maxDateTime: DateTime.parse(MAX_DATETIME),
      initialDateTime: DateTime.now(),
      dateFormat: "yyyy-MM-dd",
      locale: DateTimePickerLocale.zh_cn,
      onConfirm: (dateTime, List<int> index) {
        setState(() { _date = dateTime; }); }); }Copy the code

Image select multi_image_picker

Reference:

Pub. Dev/packages/mu…

Sh1d0w. Making. IO/multi_image…

Android/app/SRC/main/AndroidMainFest. Added to XML

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.CAMERA" />
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The android/app/build. Gradle

android {
    compileSdkVersion 28

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.paoding.jihong_horticulture_warehouse"
        minSdkVersion 19   / / 16 to 19
        targetSdkVersion 28
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
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android/build.gradle

    dependencies {
        classpath 'com. Android. Tools. Build: gradle: 3.5.0'}}Copy the code

android/gradle/wrapper/gradle-wrapper.properties

#Fri Jun 23 08:50:38 CEST 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\:/ / services.gradle.org/distributions/gradle-5.4.1-all.zip

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The last one

Then delete the original gradle package

Usage Reference:

  void _uploadPictures() async {
    var list =
    await MultiImagePicker.pickImages(maxImages: 9, enableCamera: true);
    setState(() {
      images = images+list;
    });
    for (var r in list) {
      var t = await r.filePath;
      await _upLoadImage(File(t));
    }
  }



  _upLoadImage( File croppedFile) async {
    String _path = croppedFile.path;
    var _name = _path.substring(_path.lastIndexOf("/") + 1, _path.length);
    String _suffix = _name.split(".").last.toLowerCase();

    ContentType _contentType;

    if (_suffix == "jpg") {
      _contentType =ContentType("image"."jpeg");
    } else if (_suffix == "png") {
      _contentType =ContentType("image".'png');
    }

    FormData _formData = new FormData.from({
      "file": new UploadFileInfo(croppedFile, _name,contentType: _contentType)
    });

    String host = 'https://app.ji-hong.com.cn/api';
    String url='/attachment/upload';

    Dio dio = new Dio();
    Response response =await dio.post("$host$url", data: _formData);

    if (response.statusCode == 200) {
      var resCode = response.data['code'];
      if (resCode == 200) {
        uploadimageList.add(response.data['data']);
        print(response.data['data']);
      } else if (resCode == 400) {
        showToast(response.data['message']);
      }
    }
  }



  Widget buildGridView() {
    return GridView.builder(
        itemCount: images.length + 1,
        shrinkWrap: true,
        physics: NeverScrollableScrollPhysics(),
        gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
            crossAxisCount: 3, crossAxisSpacing: 4, mainAxisSpacing: 3),
        itemBuilder: (BuildContext context, int index) {
          returnindex ! = images.length ? Stack(children: <Widget>[ GestureDetector( onTap: () { showDialog( context: context, builder: (_) => Center( child: AssetThumb( asset: images[index], width: 300, height: 300, ), )); }, child: AssetThumb( asset: images[index], width: 105, height: 105,),), new toy (right: 10, top: 0.05, Child: New GestureDetector(onTap: () {setState(() {
                        if(uploadimageList.length == images.length){ images.remove(images[index]); uploadimageList.removeAt(index); }else{
                          toast("Wait until the pictures are uploaded and delete them."); }}); }, child: new Container( decoration: new BoxDecoration( color: Colors.black45, shape: BoxShape.circle, ), child: New Icon(Icons. Close, color: Colors. White, size: 20.0,)))]) : GestureDetector(onTap: _uploadPictures, child: Container( alignment: Alignment.topLeft, child: LocalImageSelecter.getImage('d_icon_sczp_n', imageWidth: Adapt.dp(105), imageHeight: Adapt.dp(105)))); }); } _getDataList2() async {if(uploadimageList.length! =images.length){toast("Pictures have not been uploaded, wait...");return; }Copy the code

Lateral spreads

Flutter_slidable: 0.5.3

Juejin. Cn/post / 684490…

toast

Toast pub. Flutter – IO. Cn/packages/ok…

OKToast(
  /// set toast style, optional
  child:MaterialApp()
);
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Custom encapsulation:

Get a DART file for this

import 'package:jihong_horticulture_warehouse/common/CommonInsert.dart';

ToastFuture toast(String text){
  return  showToast(text,
      textPadding:EdgeInsets.fromLTRB(Adapt.dp(14), Adapt.dp(9), Adapt.dp(13), Adapt.dp(9)),
      position: ToastPosition(align: Alignment.center,),
      backgroundColor: Colors.black,
      radius: Adapt.dp(4),
      textStyle:
      TextStyle(color: MyColors.white, fontSize: MyFonts.mediumminus));
}
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Where adapt.dp is the adaptive width, refer to the file when you want to use it, toast(‘ text ‘); Can be

showToastWidget(Center( child: Container( decoration: BoxDecoration( color: Color.black. WithOpacity (0.7), borderRadius: borderRadius. Circular (10)), padding: const EdgeInsets. Symmetric (vertical: 12, horizontal: 28), child: Column( children: <Widget>[ LocalImageSelecter.getImage('icon_common_ok',
                      imageWidth: 44, imageHeight: 44),
                  SizedBox(
                    height: 10,
                  ),
                  Text(
                    'success',
                    style: TextStyle(fontSize: 12),
                  )
                ],
                mainAxisSize: MainAxisSize.min,
              ),
            ),
          ));
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Scan the QR code

Pub. Dev/packages/ba…

Blog.csdn.net/qq_35905501…

There is an error, because the latest version is referenced in pub.dev, resulting in a port to androidX

Juejin. Cn/post / 684490…

Switching to a lower version results in duplicate packages.

High end: no longer humble – the JDK is written as jre ext.kotlin_version = ‘1.2.31’

www.cnblogs.com/gxsyj/p/114…

Android Dependency 'Androidx. core:core' has different versionfor the compile (1.0. 0) and runtime (1.01.) classpath. You should manually set the same version via DependencyResolution
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www.codercto.com/a/80137.htm…

Flash lamp

C:\flutter.pub-cache\hosted\pub.dartlang.org \ barcode_scan – 0.0.6 \ android \ SRC \ main \ kotlin \ com \ apptreesoftware \ barcodescan first Change into Chinese in a KT file

Generate qr code

Qr code generation plugin qr_FLUTTER 3.1.0

Pub. Dev/packages/qr…

The lower version will report an error, remember that.

Flutter picker plug-in

Pop-up list slide selection

https://github.com/yangyxd/flutter_picker/blob/master/example/lib/main.dart
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Localization, long press the character out of copy to copy

In the main file add:

  Widget build(BuildContext context) {
    return OKToast(
      position: ToastPosition.bottom,
      backgroundColor: MyColors.button_bg_grey_deep,
      child: MaterialApp(
        onGenerateRoute: prefix0.onGenerateRoute,
        initialRoute: '/',
        title: 'JIHong', localizationsDelegates: [PickerLocalizationsDelegate. Delegate, / / if you want to use the localization, please add this trip, You can show Chinese button GlobalMaterialLocalizations. Delegate, GlobalWidgetsLocalizations. Delegate,], supportedLocales: [ const Locale('en'.'US'),
          const Locale('zh'.'CH')],Copy the code

Reference: blog.csdn.net/u010126792/…

www.jianshu.com/p/ac1615db8…

Wifi plug-in

Later changed to wiFI-iot, but with the two-dimensional code plug-in conflict, the current mobile phone if only need to switch on and off wifi is very easy to solve, but to connect to the specified wifi should be only Android can do

Pub. Dev/packages/wi…

Run a deemo

Error:

gradlew.bat” exited abnormally:

versionCode not found. Define flutter.versionCode in the local.properties file.

Solution:

Blog.csdn.net/qq_24550911…

Add it to android/local.properties

Sdk. dir=C:\ Users\ EDZ\ AppData\ Local\ Android\ SDK flutter. SDK =C:\\flutter. BuildMode =debug flutter.versionName=1.0. 0
flutter.versionCode=1
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Flutter makes phone calls and jumps to web pages

url_launcher

Pub. Flutter – IO. Cn/packages/ur…

The latest version requires a higher version of dart.SDK

For url_launcher: 5.2.1

Blog.csdn.net/qq_33210042…

flutter_html

Pub. Flutter – IO. Cn/packages/fl…

import 'package:flutter_html/flutter_html.dart'; SingleChildScrollView(child: Html(data:Copy the code

Wechat login fluwX

Get the code, using sendAuth

There has been an error without this signature

Deemo sendAuth I ran

And then the project went bad

I rebooted my phone. It’s done

main.js

  await fluwx.register(
      appId: "wx747bca6f419ed7a3".doOnAndroid: true.doOnIOS: true,);var result = await fluwx.isWeChatInstalled();
  print("is installed $result");

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Landing page

  void initState(){
    super.initState();
    fluwx.responseFromAuth.listen((response) {
      // Listen for the authorization login callback
      print("code: "+ response.code); }); } in component ontap:(){fluwx.sendauth (scope:"snsapi_userinfo".state: "wechat_sdk_demo_test"); }Copy the code

Related websites:

Github.com/OpenFlutter…

Address the plugin

 import 'package:city_pickers/city_pickers.dart'; String provinceS; String cityS; String districtS; void _selectCity() async { Result tempResult = await CityPickers.showCityPicker( context: context, locationCode: resultAttr ! = null ? resultAttr.areaId ?? resultAttr.cityId ?? resultAttr.provinceId : null, showType: ShowType.pca, height: 350, isSort: isSort, barrierOpacity: barrierOpacityAttr, itemExtent: customerItemExtent, cancelWidget: Text('cancel',style: TextStyle(color: MyColors.blue_4f,fontSize: MyFonts.f14),),
        confirmWidget: Text('sure',style: TextStyle(color: MyColors.blue_4f,fontSize: MyFonts.f14),),
        itemBuilder: this.getItemBuilder());
    print("locationCode $tempResult");
    if (tempResult == null) {
      return;
    }
    this.setState(() {
      result = tempResult;
      provinceS = result.provinceName;
      cityS = result.cityName;
      districtS = result.areaName;
      pccAddress = "${result.provinceName}${result.cityName}${result? .areaName}";
    });
  }
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Pull-up refresh pull-down load

import 'package:pull_to_refresh/pull_to_refresh.dart'; int biu = 0; // Drop down state RefreshController _refreshController = RefreshController(initialRefresh:false); Void _onRefresh() async {// monitor network fetch await future.delayed (Duration(milliseconds: 1000)); //if failed,use refreshFailed()
    _refreshController.refreshCompleted();
    _pageNo = _pageNo2=1;
    _list=[];
    if(! isPage2) { _getDataList(); }else{ _getDataList2(); } _refreshController.loadComplete(); } // pull down void _onLoading() async {// monitor network fetch await future.delayed (Duration(milliseconds: 1000));if(! isPage2) { _pageNo++; _getDataList(); }else{
      _pageNo2++;
      _getDataList2();
    }
    if(biu == 2) { _refreshController.loadNoData(); / / found countless according to appear as long as the state can no longer under tensile load, can lead to enter the page of screening can't drop down / / need _refreshController loadComplete (); Reset state}else if (biu == 0) {
      _refreshController.loadFailed();
    } else {
      _refreshController.loadComplete();
    }
  }
  bool flag = true; 
  bool isPage2 = false; Int _pageNo = 1; Int _pageNo2 = 1; List _list = []; voidinitState() {
    super.initState();
    _getDataList();
  }

  void disposeDispose () {// Dispose textEditingController controller1.dispose(); controller2.dispose(); controller3.dispose(); super.dispose(); } / / normal request _getDataList () is async {var res = await the Fetch HttpManager.net (context, address findAllWarehouseComplaint (), {"pageable": {"page": _pageNo, "size": 5}}, null, null, noTip: true);
    isPage2 = false;
    if(res ! = null) {if (res.result) {
        if (mounted) {
          setState(() {
            if(res.data.length ! = 0) { _list.addAll(res.data); biu = 3; }else{ biu = 2; }}); }}}else{ biu = 0; toast(BaseCommon.SERVER_ERROR); }} // Filter page request + drop down _getDataList2() async{isPage2 =true;
    Map<String,dynamic> map = new Map();
    map = {"providerName":controller3.text,"plantName":controller1.text,"status":status,"complaintName":controller2.text,"pageable": {"page": _pageNo2, "size": 5}};
    var res = await HttpManager.netFetch(
        context, address.filterWarehouseComplaint(), map, null, null, noTip: true);
    if(res ! = null) {if (res.result) {
        if (mounted) {
          if(_pageNo2==1&&res.data.length == 0){
            if (mounted) {
              setState(() {
                flag = false; }); }}else if(res.data.length ! = 0) {setState(() {
              _list.addAll(res.data);
            });
            biu = 3;
          } else{ biu = 2; }}}}else {
      biu = 0;
      toast(BaseCommon.SERVER_ERROR);
    }
  }

 Widget build(BuildContext context) {
    return Scaffold(
        resizeToAvoidBottomPadding: false// Enable the keyboard to override the layout key: key7, backgroundColor: MyColors. Grey_f5, appBar: MyAppBar(title: MyAppBar)"After-sales Complaints",
          isBack: true,
          rightEvent: InkWell(
            child: Text("Screening"), onTap: _handlerDrawerButton, // Scaffold.of(context).openEndDrawer(); // CommonUtil.openPage(context, forgetPassword2()); ) , ), body: SmartRefresher(enablePullDown: true.enablePullUp: true,
          header: WaterDropHeader(),
          footer: CustomFooter(
            builder: (BuildContext context, LoadStatus mode) {
              Widget body;
              if (mode == LoadStatus.idle) {
                body = Text("Pull up load");
              } else if (mode == LoadStatus.loading) {
                body = CupertinoActivityIndicator();
              } else if (mode == LoadStatus.failed) {
                body = Text("Load failed! Click Retry!");
              } else if (mode == LoadStatus.canLoading) {
                body = Text("Let go! Load more!");
              } else {
                body = Text("No more data!");
              }
              returnContainer(height: 55.0, child: Center(child: body),); }, ), controller: _refreshController, onRefresh: _onRefresh, onLoading: _onLoading, child: flag ? ListView.builder( itemBuilder: (context, index) {return _buildList(_list[index]);
                  },
                  itemCount: _list.length,
                )
              : new SearchError(callback: (val) => onDataChange(val)),
        ),
        endDrawer: Container(
            
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