CaiJingLong

import 'package:flutter/material.dart';

import 'package:photo/photo.dart';
import 'package:flutter_image_compress/flutter_image_compress.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override

CaiJingLong

import 'package:flutter/material.dart';
import 'scale_text_widget.dart';

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override

CaiJingLong

// translated to Dart from a code snippet presented here:
// https://stackoverflow.com/questions/672916/how-to-get-image-height-and-width-using-java
Future<Size> getJpegDimensions(File jpegFile) async {
  final f = await jpegFile.open();
  Size dimension;
  try {
    // check for SOI marker
    if (await f.readByte() != 255 || await f.readByte() != 216) {
      throw new FormatException(
          "SOI (Start Of Image) marker 0xff 0xd8 missing");

CaiJingLong

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',

CaiJingLong

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',

CaiJingLong

package main

import (
	"fmt"
	"gopkg.in/yaml.v2"
	"io/ioutil"
)

func main() {
	params := make(map[string]interface{})

CaiJingLong

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
import 'package:flutter_image_compress/flutter_image_compress.dart';
import 'package:path_provider/path_provider.dart' as path_provider;

void main() {
  runApp(MyApp());
}

CaiJingLong

import 'dart:math';
import 'dart:ui';

import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override

CaiJingLong

  <uses-permission android:name="android.permission.USE_FINGERPRINT"/>

CaiJingLong

import 'dart:async';

import 'package:flutter/material.dart';

class MeasureWidget extends StatefulWidget {
  final Widget child;
  final ValueSetter<Rect> measureRect;
  final BoxConstraints boxConstraints;

  const MeasureWidget({