离子4指纹图谱

Question

我使用离子4与角制作一个离子指纹应用程序。我正在使用来自https://ionicframework.com/docs/native/fingerprint-aio的示例代码。跟随着所有的步骤。当我命令构造函数并跟随代码运行时，当我将设置整个代码时，我将得到一个白色屏幕，其中有以下错误：

consolelogs.js:49错误:未知(承诺)：TypeError: Object(.)不是函数TypeError: Object(.)不是Module../node_modules/@ionic-native/fingerprint-aio/index.js at index.js:92 (index.js:141) at webpack_require (引导代码:84)在模块../src/app/home/home/home.page.ts (home-home-module.js:84)上的webpack_require (引导代码:84)在模块./src/app/home/home.module.ts(home-home-module.js:30)在webpack_require (引导代码:84) at ZoneDelegate.invoke (zone-evergreen.js:359) at Object.onInvoke (core.js:34201) at ZoneDelegate.invoke (zone-evergreen.js:358) at resolvePromise (zone-evergreen.js:797) at resolvePromise (zone-evergreen.js:754) at zone-evergreen.js:858 at ZoneDelegate.invokeTask (zone-evergreen.js:391)在Object.onInvokeTask (core.js:34182) at ZoneDelegate.invokeTask (zone-evergreen.js:390) at Zone.runTask (zone-evergreen.js:168) at drainMicroTaskQueue (zone-evergreen.js:559)

import { FingerprintAIO } from '@ionic-native/fingerprint-aio';

@Component({
  selector: 'app-home',
  templateUrl: 'home.page.html',
  styleUrls: ['home.page.scss'],
})
export class HomePage {



constructor(private faio: FingerprintAIO) { }

logging(){
this.faio.show({
    clientId: 'Fingerprint-Demo', //Android: Used for encryption. iOS: used for dialogue if no `localizedReason` is given.
    clientSecret: 'o7aoOMYUbyxaD23oFAnJ', //Necessary for Android encrpytion of keys. Use random secret key.
    disableBackup:true,  //Only for Android(optional)
    localizedFallbackTitle: 'Use Pin', //Only for iOS
    localizedReason: 'Please authenticate' //Only for iOS
})
.then((result: any) => console.log(result))
}
}

我希望有人能帮我改正错误，因为我不明白为什么我会犯错误

Answer 1

这里有两种可能性。

首先是您导入的问题，很可能是导致错误的问题，将您的导入更改为下面的代码或

import { FingerprintAIO } from '@ionic-native/fingerprint-aio/ngx';"

要么你还没有在你的app.module.ts上导入插件

Answer 2

我认为问题来自你的进口，试试这个：

import { FingerprintAIO } from '@ionic-native/fingerprint-aio/ngx';