ocr_plugin_flutter 1.0.0

ocr_plugin_flutter project.

example/lib/main.dart

import 'dart:io';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:ocr_plugin_flutter_example/ocr_scan.dart';
import 'package:permission_handler/permission_handler.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(home: HomePage());
  }
}

class HomePage extends StatefulWidget {
  const HomePage({Key? key}) : super(key: key);

  @override
  State<HomePage> createState() => _MyAppState();
}

class _MyAppState extends State<HomePage> {
  Image _imageFront = Image.asset("images/pic_avatar.png",
      width: 300, height: 160, fit: BoxFit.cover);
  Image _imageBack = Image.asset("images/pic_emblem.png",
      width: 300, height: 160, fit: BoxFit.cover);

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('易盾身份证ocr检测'),
        ),
        body: Center(
          child: _buildContent(context),
        ),
      ),
    );
  }

  Widget _buildContent(BuildContext context) {
    return Column(children: [
      showText(),
      GestureDetector(
          onTap: () {
            if (defaultTargetPlatform == TargetPlatform.android) {
              checkPermission().then((value) => {
                    if (value) {push(context, "front")}
                  });
            } else {
              push(context, "front");
            }
          },
          child: _imageFront),
      showTextFront(),
      GestureDetector(
          onTap: () {
            if (defaultTargetPlatform == TargetPlatform.android) {
              checkPermission().then((value) => {
                    if (value) {push(context, "back")}
                  });
            } else {
              push(context, "back");
            }
          },
          child: _imageBack),
      showTextBack()
    ]);
  }

  Widget showText() {
    return Container(
        padding: const EdgeInsets.fromLTRB(0, 20, 0, 20),
        alignment: Alignment.topCenter,
        child: const Text("身份证OCR体验Demo",
            style: TextStyle(
                color: Colors.black,
                fontSize: 24,
                fontFamily: "PingFangSC-Semibold")));
  }

  Widget showTextFront() {
    return Container(
        padding: const EdgeInsets.fromLTRB(0, 20, 0, 20),
        alignment: Alignment.topCenter,
        child: const Text("拍摄人面像",
            style: TextStyle(
                color: Color(0xFF666666),
                fontSize: 16,
                fontFamily: "PingFangSC-Semibold")));
  }

  Widget showTextBack() {
    return Container(
        padding: const EdgeInsets.fromLTRB(0, 20, 0, 20),
        alignment: Alignment.topCenter,
        child: const Text("拍摄国徽面",
            style: TextStyle(
                color: Color(0xFF666666),
                fontSize: 16,
                fontFamily: "PingFangSC-Semibold")));
  }

  void push(BuildContext context, String scanType) {
    Future result = Navigator.push(
        context,
        MaterialPageRoute(
            builder: (context) => OcrScan(
                  scanType: scanType,
                )));
    var that = this;
    result.then((value) => that.setState(() {
          if ("front" == scanType) {
            that._imageFront = Image.file(File(value),
                width: 300, height: 160, fit: BoxFit.cover);
          } else {
            that._imageBack = Image.file(File(value),
                width: 300, height: 160, fit: BoxFit.cover);
          }
        }));
  }

  // ignore: missing_return
  Future<bool> checkPermission() async {
    //当前权限
    Permission permission = Permission.camera;
    //权限的状态
    PermissionStatus status = await permission.status;
    if (status.isDenied) {
      //发起权限申请
      PermissionStatus status = await permission.request();
      if (status.isGranted) {
        return true;
      } else {
        return false;
      }
    } else {
      return true;
    }
  }
}

/// 封装 按钮
class CustomButton extends StatelessWidget {
  final VoidCallback onPressed;
  final String title;

  // ignore: use_key_in_widget_constructors
  const CustomButton({required this.onPressed, required this.title});

  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return new TextButton(
      onPressed: onPressed,
      style: ButtonStyle(
          backgroundColor:
          MaterialStateProperty.resolveWith((states) => Colors.blue)),
      child: new Text(
        "$title",
        style: TextStyle(fontSize: 13, color: Colors.white),
      ),
    );
  }
}