/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 *
 * @format
 * @flow
 */

import React, {Component} from 'react';
import {  NativeModules,TouchableOpacity, Platform, StyleSheet, Text, View} from 'react-native';

type Props = {};
export default class App extends Component<Props> {
  _scanner=()=>{
    NativeModules.NaviModule.startQrcodeScanner().then(result=>{
      alert(result);
    }).catch(error=>{

    });
  }
  render() {
    return (
      <View style={styles.container}>
        <TouchableOpacity onPress={this._scanner}>
            <Text>扫描</Text>
        </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  welcome: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
  },
  instructions: {
    textAlign: 'center',
    color: '#333333',
    marginBottom: 5,
  },
});

allprojects {
    repositories {
        google()
        jcenter()
        maven { url 'https://jitpack.io' }
    }
}

dependencies {
   compile fileTree(dir: 'libs', include: ['*.jar'])
   compile 'com.android.support:appcompat-v7:26.1.0'
   
   /*添加依赖*/
   implementation 'com.github.yuzhiqiang1993:zxing:2.2.5'
}

Manifest.permission.CAMERA
Manifest.permission.READ_EXTERNAL_STORAGE

<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
startActivityForResult(intent, REQUEST_CODE_SCAN);

Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
/*ZxingConfig是配置类
*可以设置是否显示底部布局，闪光灯，相册，
* 是否播放提示音  震动
* 设置扫描框颜色等
* 也可以不传这个参数
* */
ZxingConfig config = new ZxingConfig();
config.setPlayBeep(true);//是否播放扫描声音 默认为true
config.setShake(true);//是否震动  默认为true
config.setDecodeBarCode(true);//是否扫描条形码 默认为true
config.setReactColor(R.color.colorAccent);//设置扫描框四个角的颜色 默认为白色
config.setFrameLineColor(R.color.colorAccent);//设置扫描框边框颜色 默认无色
config.setScanLineColor(R.color.colorAccent);//设置扫描线的颜色 默认白色
config.setFullScreenScan(false);//是否全屏扫描  默认为true  设为false则只会在扫描框中扫描
intent.putExtra(Constant.INTENT_ZXING_CONFIG, config);
startActivityForResult(intent, REQUEST_CODE_SCAN);

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // 扫描二维码/条码回传
        if (requestCode == REQUEST_CODE_SCAN && resultCode == RESULT_OK) {
            if (data != null) {

                String content = data.getStringExtra(Constant.CODED_CONTENT);
                result.setText("扫描结果为：" + content);
            }
        }
    }