二维码扫描，没有生成，生成比较复杂
一，增加远程依赖
app构建脚本中加：
implementation 'com.journeyapps:zxing-android-embedded:4.3.0'
二，注册表改一下
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"package="com.example.please_light"><uses-permission android:name="android.permission.VIBRATE" /><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.INTERNET" /><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/Theme.Please_light"><activityandroid:name=".MainActivity"android:label="@string/title_activity_main"android:theme="@style/Theme.Please_light.NoActionBar"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><activityandroid:name="com.journeyapps.barcodescanner.CaptureActivity"android:screenOrientation="portrait"tools:replace="android:screenOrientation"/></application></manifest>三，启动扫描
public static final int SCAN_CODE=0X02;
..........
Intent intent=new Intent(context, CaptureActivity.class);startActivityForResult(intent,SCAN_CODE);
............
四，扫描完成会返回结果接收
@Overrideprotected void onActivityResult(int requestCode, int resultCode, @Nullable @org.jetbrains.annotations.Nullable Intent data) {super.onActivityResult(requestCode, resultCode, data);if(resultCode==RESULT_OK && data!=null){IntentResult result= IntentIntegrator.parseActivityResult(resultCode,data);String code=result.getContents();Toast.makeText(context,code,Toast.LENGTH_LONG).show();}}五.找了一天得资料，全他妈得跑不起来，我要有啃源码得时间我不会信你们得鬼。