angular - PayPal ionic 提供商

Question

我正在使用 Cordova PayPal plugin .但是，当我尝试将它添加到页面时，出现以下错误:

Uncaught (in promise): Error: No provider for PayPal! Error: No provider for PayPal! at injectionError (http://localhost:8100/build/main.js:1510:86) at noProviderError (http://localhost:8100/build/main.js:1548:12) at ReflectiveInjector_.throwOrNull (http://localhost:8100/build/main.js:3049:19) at ReflectiveInjector.getByKeyDefault (http://localhost:8100/build/main.js:3088:25) at ReflectiveInjector.getByKey (http://localhost:8100/build/main.js:3020:25) at ReflectiveInjector.get (http://localhost:8100/build/main.js:2889:21) at AppModuleInjector.get (ng:///AppModule/module.ngfactory.js:358:125) at AppModuleInjector.getInternal (ng:///AppModule/module.ngfactory.js:507:55) at AppModuleInjector.NgModuleInjector.get (http://localhost:8100/build/main.js:3856:44) at resolveDep (http://localhost:8100/build/main.js:11318:45) Stack

有什么想法吗？另外，对于理解 providers 和 promises，您有什么建议吗？

Answer 1

在您的 app.module.ts 中，添加以下内容

从'@ionic-native/paypal'导入{PayPal, PayPalPayment, PayPalConfiguration};

在@NgModule 部分下，查找提供商并添加“Paypal”，如下所示:

供应商:[ Paypal ]