Zxing

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar', '*.har'])
	……
}

repositories {
    maven {
        url 'http://106.15.92.248:8081/repository/Releases/' 
    }
}

dependencies {
    implementation 'com.mylhyl.ohos:zxingscanner:1.0.1'
}

new QREncode(this)
          .setQrBackground(ResourceTable.Color_white)
          .build(mImage, "This is a qrCode");

"reqPermissions": [
      {
        "name": "ohos.permission.CAMERA"
      }
    ]

String[] permissions = {"ohos.permission.CAMERA"
                , "ohos.permission.MICROPHONE"
                , "ohos.permission.LOCATION"
                , "ohos.permission.WRITE_USER_STORAGE"};
        requestPermissionsFromUser(permissions, 0);