app/lib/my_tools/my_tools.dart

import 'dart:convert' as convert;
import 'dart:convert';
import 'dart:io';

import 'package:bbyyy/beans/new_msg_bean_entity.dart';
import 'package:bbyyy/my_tools/easy_loading/easy_loading.dart';
import 'package:convert/convert.dart';
import 'package:crypto/crypto.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_image_compress/flutter_image_compress.dart';
import 'package:image_cropper/image_cropper.dart';
import 'package:image_picker/image_picker.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';
import 'package:uuid/uuid.dart';

import 'month_day.dart';
import 'my_colors.dart';

class MyTools {
  toPage(context, page, then, {bool noBack = false}) {
    if (noBack) {
      Navigator.pushAndRemoveUntil(
          context,
          MaterialPageRoute(builder: (context) => page),
          (route) => route == null);
    } else {
      Navigator.push(context, MaterialPageRoute(builder: (context) => page))
          .then(then);
    }
  }

  hideKeyboard(BuildContext context) {
    FocusScope.of(context).requestFocus(FocusNode());
  }

  static String base64Encode(String data) {
    var content = convert.utf8.encode(data);
    var digest = convert.base64Encode(content);
    return digest;
  }
}

showToast(
  String status,
) {
  EasyLoading.showToast(status);
}

const _regExp = r"^[ZA-ZZa-z0-9_]+$";

class onlyInputNumberAndWorkFormatter extends TextInputFormatter {
  @override
  TextEditingValue formatEditUpdate(
      TextEditingValue oldValue, TextEditingValue newValue) {
    if (newValue.text.length > 0) {
      if (RegExp(_regExp).firstMatch(newValue.text) != null) {
        return newValue;
      }
      return oldValue;
    }
    return newValue;
  }
}

final picker = ImagePicker();

selectImage({bool isCover = true}) async {
  final pickedFile = await picker.getImage(source: ImageSource.gallery);
  if (pickedFile != null) {
    File cropperImg;
    if(isCover){
      cropperImg = await ImageCropper.cropImage(
          sourcePath: pickedFile.path,
          cropStyle: CropStyle.rectangle,
          aspectRatio: CropAspectRatio(ratioX: 1,ratioY: 1),
          aspectRatioPresets: [
            isCover
                ? CropAspectRatioPreset.square
                : CropAspectRatioPreset.original,
          ],
          androidUiSettings: AndroidUiSettings(
              toolbarTitle: '图片剪裁',
              toolbarColor: MyColors.cFF4233,
              toolbarWidgetColor: Colors.white,
              initAspectRatio: isCover
                  ? CropAspectRatioPreset.square
                  : CropAspectRatioPreset.original,
              lockAspectRatio: isCover),
          iosUiSettings: IOSUiSettings(
            minimumAspectRatio: 1.0,
          ));
    }else{
      cropperImg = await ImageCropper.cropImage(
          sourcePath: pickedFile.path,
          aspectRatioPresets: [
            isCover
                ? CropAspectRatioPreset.square
                : CropAspectRatioPreset.original,
          ],
          androidUiSettings: AndroidUiSettings(
              toolbarTitle: '图片剪裁',
              toolbarColor: MyColors.cFF4233,
              toolbarWidgetColor: Colors.white,
              initAspectRatio: isCover
                  ? CropAspectRatioPreset.square
                  : CropAspectRatioPreset.original,
              lockAspectRatio: isCover),
          iosUiSettings: IOSUiSettings(
            minimumAspectRatio: 1.0,
          ));
    }

    if (cropperImg != null) {
      cropperImg = await compression(cropperImg,1000000);
      return cropperImg;
    } else {
      return null;
    }
  }
}

int quality = 90;

Future<File> compression(File cropperImg,int maxSize) async {
  int l = await cropperImg.length();
  print('$l');
  if (l > maxSize) {
    List<String> s = cropperImg.path.split('.');
    String type = s[s.length - 1];
    print(type);
    File f = await FlutterImageCompress.compressAndGetFile(
        cropperImg.path, cropperImg.path.replaceAll('.$type', '1.$type'),
        quality: quality);
    int l1 = await f.length();
    print('$l1');
    if (l > maxSize) {
      quality -= 10;
      return await compression(f,maxSize);
    } else {
      quality = 90;
      return f;
    }
  } else {
    return cropperImg;
  }
}

selectPicturesIndividually() async {
  final pickedFile = await picker.getImage(source: ImageSource.gallery);
  return await compression(File(pickedFile.path),1000000);
}

endRe(RefreshController reController) {
  reController.refreshCompleted();
  reController.loadComplete();
}

String generateMd5(String data) {
  var content = new Utf8Encoder().convert(data);
  var digest = md5.convert(content);
  // 这里其实就是 digest.toString()
  return hex.encode(digest.bytes);
}

String reOS(String orderString) {
  orderString = orderString.replaceAll('\n', '');
  orderString = orderString.replaceAll(' ', '');
  orderString = orderString.replaceAll('\r', '');
  orderString = orderString.replaceAll('\t', '');
  orderString = orderString.replaceAll('\s', '');
  return orderString;
}

String getUUID() {
  var uuid = Uuid();
  var uuID = uuid.v4();
  return uuID.replaceAll('-', '');
}

getMessageContent(String c) {
  print(c);
  NewMsgBeanEntity entity = NewMsgBeanEntity().fromJson(json.decode(c));
  if (entity.content.type == '文字') {
    return entity.content.content;
  } else {
    return '[${entity.content.type}]';
  }
}

getTime(int timeIndex) {
  List<String> paidAt = [];
  String sTime = '00';
  String eTime = '23';
  var dateTime = DateTime.now();
  if (timeIndex == 0) {
    if (sTime != '00') {
      if (dateTime.hour >= int.parse(sTime)) {
        paidAt.add(
            '${dateTime.year}-${numberComplement('${dateTime.month}')}-${numberComplement('${dateTime.day}')} $sTime:00:00');
        paidAt.add(
            '${dateTime.add(Duration(days: 1)).year}-${numberComplement('${dateTime.add(Duration(days: 1)).month}')}-${numberComplement('${dateTime.add(Duration(days: 1)).day}')} $eTime:59:59');
      } else {
        paidAt.add(
            '${dateTime.subtract(Duration(days: 1)).year}-${numberComplement('${dateTime.subtract(Duration(days: 1)).month}')}-${numberComplement('${dateTime.subtract(Duration(days: 1)).day}')} $sTime:00:00');
        paidAt.add(
            '${dateTime.year}-${numberComplement('${dateTime.month}')}-${numberComplement('${dateTime.day}')} $eTime:59:59');
      }
    } else {
      paidAt.add(
          '${dateTime.year}-${numberComplement('${dateTime.month}')}-${numberComplement('${dateTime.day}')} $sTime:00:00');
      paidAt.add(
          '${dateTime.year}-${numberComplement('${dateTime.month}')}-${numberComplement('${dateTime.day}')} $eTime:59:59');
    }
  } else if (timeIndex == 1) {
    if (sTime == '00') {
      paidAt.add(
          '${dateTime.subtract(Duration(days: 1)).year}-${numberComplement('${dateTime.subtract(Duration(days: 1)).month}')}-${numberComplement('${dateTime.subtract(Duration(days: 1)).day}')} $sTime:00:00');
      paidAt.add(
          '${dateTime.subtract(Duration(days: 1)).year}-${numberComplement('${dateTime.subtract(Duration(days: 1)).month}')}-${numberComplement('${dateTime.subtract(Duration(days: 1)).day}')} $eTime:59:59');
    } else {
      if (dateTime.hour >= int.parse(sTime)) {
        paidAt.add(
            '${dateTime.subtract(Duration(days: 1)).year}-${numberComplement('${dateTime.subtract(Duration(days: 1)).month}')}-${numberComplement('${dateTime.subtract(Duration(days: 1)).day}')} $sTime:00:00');
        paidAt.add(
            '${dateTime.year}-${numberComplement('${dateTime.month}')}-${numberComplement('${dateTime.day}')} $eTime:59:59');
      } else {
        paidAt.add(
            '${dateTime.subtract(Duration(days: 2)).year}-${numberComplement('${dateTime.subtract(Duration(days: 2)).month}')}-${numberComplement('${dateTime.subtract(Duration(days: 2)).day}')} $sTime:00:00');
        paidAt.add(
            '${dateTime.subtract(Duration(days: 1)).year}-${numberComplement('${dateTime.subtract(Duration(days: 1)).month}')}-${numberComplement('${dateTime.subtract(Duration(days: 1)).day}')} $eTime:59:59');
      }
    }
  } else if (timeIndex == 2) {
    paidAt.add(
        '${dateTime.subtract(Duration(days: dateTime.weekday - 1)).year}-${numberComplement('${dateTime.subtract(Duration(days: dateTime.weekday - 1)).month}')}-${numberComplement('${dateTime.subtract(Duration(days: dateTime.weekday - 1)).day}')} 00:00:00');
    paidAt.add(
        '${dateTime.add(Duration(days: 7 - dateTime.weekday)).year}-${numberComplement('${dateTime.add(Duration(days: 7 - dateTime.weekday)).month}')}-${numberComplement('${dateTime.add(Duration(days: 7 - dateTime.weekday)).day}')} 23:59:59');
  } else if (timeIndex == 3) {
    DateTime lastWeek = dateTime.subtract(Duration(days: 7));
    paidAt.add(
        '${lastWeek.subtract(Duration(days: lastWeek.weekday - 1)).year}-${numberComplement('${lastWeek.subtract(Duration(days: lastWeek.weekday - 1)).month}')}-${numberComplement('${lastWeek.subtract(Duration(days: lastWeek.weekday - 1)).day}')} 00:00:00');
    paidAt.add(
        '${lastWeek.add(Duration(days: 7 - lastWeek.weekday)).year}-${numberComplement('${lastWeek.add(Duration(days: 7 - lastWeek.weekday)).month}')}-${numberComplement('${lastWeek.add(Duration(days: 7 - lastWeek.weekday)).day}')} 23:59:59');
  } else if (timeIndex == 4) {
    paidAt.add(
        '${dateTime.year}-${numberComplement('${dateTime.month}')}-01 00:00:00');
    paidAt.add(
        '${dateTime.year}-${numberComplement('${dateTime.month}')}-${numberComplement('${MonthDay().getDays(dateTime)}')} 23:59:59');
  } else if (timeIndex == 5) {
    DateTime firstMonth = dateTime.subtract(Duration(days: dateTime.day));
    paidAt.add('${firstMonth.year}-${firstMonth.month}-01 00:00:00');
    paidAt.add(
        '${firstMonth.year}-${numberComplement('${firstMonth.month}')}-${numberComplement('${MonthDay().getDays(firstMonth)}')} 23:59:59');
  }
  print(json.encode(paidAt));
  return paidAt;
}

numberComplement(String s) {
  if (s.length == 1) {
    return '0$s';
  } else {
    return '$s';
  }
}