react-native 扫一扫功能（二维码扫描）功能开发

1.安装插件

yarn add react-native-smart-barcode

2.关联

react-native link react-native-smart-barcode

3.修改 android/settings.gradle

rootProject.name = 'Example'
include ':react-native-smart-barcode'
project(':react-native-smart-barcode').projectDir = new File(rootProject.projectDir, '../node_modules/react- 
native-smart-barcode/android')

include ':app'

4.修改 android/app/build.gradle

dependencies {
  compile project(':react-native-smart-barcode')
  ...
}

5.修改 android/app/src/main/AndroidManifest.xml

<!-- smart-barcode所需权限 开始-->
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<!-- smart-barcode所需权限 结束-->

6.修改 android/app/src/main/java/com/example/MainApplication.java

import com.reactnativecomponent.barcode.RCTCapturePackage;

new RCTCapturePackage(),

.