alive_flutter_plugin 0.1.9

A new Flutter plugin.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/foundation.dart';
import 'package:alive_flutter_plugin_example/alivePage.dart';
import 'package:permission_handler/permission_handler.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        routes: {'/other': (BuildContext context) => LivePage()},
        home: HomePage());
  }
}

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

class _MyAppState extends State<HomePage> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      // routes: {'/livePage':(BuildContext context)=>LivePage()},
      home: Scaffold(
        // appBar: AppBar(
        //   title: const Text('易盾活体检测'),
        // ),
        body: Center(
          child: _buildContent(context),
        ),
      ),
    );
  }

  Widget _buildContent(BuildContext context) {
    return new Column(children: [
      showFaceImage(),
      showContentWidget(),
      startDetectButton(context),
    ]);
  }

  Widget showFaceImage() {
    return Row(
      textDirection: TextDirection.rtl,
      children: [
        Padding(
            padding: EdgeInsets.all(20),
            child: Image.asset(
              'images/pic_demo.png',
              width: 160,
              height: 160,
            ))
      ],
    );
  }

  Widget showContentWidget() {
    return Column(
      children: [
        SizedBox(height: 30),
        showLogo(),
        showText(),
        showText1(),
        SizedBox(height: 30),
        showDetail()
      ],
    );
  }

  Widget showLogo() {
    return Container(
        padding: EdgeInsets.fromLTRB(20, 0, 0, 0),
        alignment: Alignment.topLeft,
        child: Image.asset(
          'images/ico_logo_bar_white.png',
          width: 40,
          height: 40,
          alignment: Alignment.topLeft,
        ));
  }

  Widget showText() {
    return Container(
        padding: EdgeInsets.fromLTRB(20, 0, 0, 0),
        alignment: Alignment.topLeft,
        child: Text(
          "欢迎体检，",
          style: TextStyle(
              color: Colors.black,
              fontSize: 24,
              fontFamily: "PingFangSC-Semibold"),
          maxLines: 5,
        ));
  }

  Widget showText1() {
    return Container(
        padding: EdgeInsets.fromLTRB(20, 0, 0, 0),
        alignment: Alignment.topLeft,
        child: Text(
          "易盾活体检测Demo",
          style: TextStyle(
              color: Colors.black,
              fontSize: 24,
              fontFamily: "PingFangSC-Semibold"),
          maxLines: 5,
        ));
  }

  Widget showDetail() {
    return Column(
      children: [
        addContent("明亮的光线环境下使用"),
        SizedBox(height: 10),
        addContent("不要遮挡面部"),
        SizedBox(height: 10),
        addContent("正握手机，人脸正对屏幕")
      ],
    );
  }

  Widget addContent(String content) {
    return Row(
      children: [
        Padding(
            padding: EdgeInsets.fromLTRB(20, 0, 0, 0),
            child: Image.asset(
              'images/ico_green.png',
              width: 20,
              height: 20,
              alignment: Alignment.topLeft,
            )),
        Text(content,
            style: TextStyle(
                color: Colors.grey,
                fontSize: 14,
                fontFamily: "PingFangSC-Semibold"))
      ],
    );
  }

  Widget startDetectButton(BuildContext context) {
    return new Container(
      child: SizedBox(
        child: new CustomButton(
          onPressed: () {
            if (defaultTargetPlatform == TargetPlatform.android) {
              checkPermission().then((value) => {
                    if (value) {Navigator.pushNamed(context, '/other')}
                  });
            } else {
              Navigator.pushNamed(context, '/other');
            }
          },
          title: "开始检测",
        ),
        width: double.infinity,
        height: 49,
      ),
      margin: EdgeInsets.fromLTRB(40, 40, 40, 5),
    );
  }
}

// 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 true;
  }
}

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

  const CustomButton({@required this.onPressed, 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),
      ),
    );
  }
}