我尝试使用Ionics本机插件“网络”,但是由于据说缺少提供程序而失败。为了避免出现任何错误,我已经安装了Ionic的全新安装以及所需的依赖项:
ionic cordova plugin add cordova-plugin-network-information
npm install @ionic-native/network
然后我将依赖项添加到home的构造函数中:
import { Component } from '@angular/core';
import { Network } from '@ionic-native/network/ngx';
@Component({
selector: 'app-home',
templateUrl: 'home.page.html',
styleUrls: ['home.page.scss'],
})
export class HomePage {
constructor(private network: Network) {
// to nothing ...
}
}
...,并且在执行ionic serve
后将收到以下错误消息:
ERROR Error: Uncaught (in promise):
Error: StaticInjectorError(AppModule)[HomePage -> Network]:
StaticInjectorError(Platform: core)[HomePage -> Network]:
NullInjectorError: No provider for Network!
Error: StaticInjectorError(AppModule)[HomePage -> Network]:
StaticInjectorError(Platform: core)[HomePage -> Network]:
NullInjectorError: No provider for Network!
系统信息
Ionic:
ionic (Ionic CLI) : 4.12.0 (/Users/samnowakowski/node_modules/ionic)
Ionic Framework : @ionic/angular 4.4.0
@angular-devkit/build-angular : 0.13.9
@angular-devkit/schematics : 7.3.9
@angular/cli : 7.3.9
@ionic/angular-toolkit : 1.5.1
Cordova:
cordova (Cordova CLI) : 9.0.0 (cordova-lib@9.0.1)
Cordova Platforms : none
Cordova Plugins : no whitelisted plugins (1 plugins total)
System:
Android SDK Tools : 26.1.1 (/Users/admin/Library/Android/sdk)
NodeJS : v10.15.3 (/usr/local/bin/node)
npm : 6.9.0
OS : macOS Mojave
Xcode : Xcode 10.2.1 Build version 10E1001
答案 0 :(得分:1)
打开应用程序模块(app.module.ts)及以下代码:
import { Network } from '@ionic-native/network/ngx';
@NgModule(
...
providers: [
Network
]
);