HarmonyOS 鸿蒙Next 识别指纹失败无错误码

1、申请权限

"requestPermissions": [

{

"name": "ohos.permission.ACCESS_BIOMETRIC",

}

]

2、对应识别结果的处理

import userIAM_userAuth from '@ohos.userIAM.userAuth';

const authParam : userIAM_userAuth.AuthParam = {

  challenge: new Uint8Array([1, 1, 1, 1, 1, 1]),

  authType: [userIAM_userAuth.UserAuthType.FINGERPRINT],

  authTrustLevel: userIAM_userAuth.AuthTrustLevel.ATL1,

};

const widgetParam : userIAM_userAuth.WidgetParam = {

  title: '请使用指纹解锁',

};

@Entry

@Component

struct AuthTestExample {

  build() {

    Column() {

      Button('AuthTest')

        .onClick(() => {

          try {

            //获取认证对象

            let userAuthInstance = userIAM_userAuth.getUserAuthInstance(authParam, widgetParam);

            console.log('get userAuth instance success');

            //订阅认证结果

            userAuthInstance.on('result', {

              onResult (result) {

                console.log('userAuthInstance callback result = ' + JSON.stringify(result));

                if (result.result == userIAM_userAuth.UserAuthResultCode.SUCCESS) {

                  console.log('userAuthInstance success');

                }

              }

            });

            console.log('auth on success');

            userAuthInstance.start();

            console.log('auth start success');

          } catch (error) {

            console.log('auth catch error: ' + JSON.stringify(error));

          }

        })

        .fontSize(30)

        .height(50)

    }.height('100%').width('100%').justifyContent(FlexAlign.Center)

  }

}