离子cordova构建android –prod –release失败，无法解析'./app.module.ngfactory

Question

I'm working with Ionic 3. When I try cordova build android --prod --release , a build is done, but the signed APK is showing white screen after splash. When I try ionic cordova build android --prod --release , it is showing the following error.

Main.ts

 import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { AppModule } from './app.module'; platformBrowserDynamic().bootstrapModule(AppModule); 

app.module.ts

 import { NgModule, ErrorHandler } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular'; import { MyApp } from './app.component'; import { FormsModule } from '@angular/forms'; import { HttpModule } from '@angular/http'; import { BarcodeScanner } from '@ionic-native/barcode-scanner'; import { AppRate } from '@ionic-native/app-rate'; import { PopoverPage } from '../pages/popover/popover'; import { TabsPage } from '../pages/tabs/tabs'; import { StatusBar } from '@ionic-native/status-bar'; import { SplashScreen } from '@ionic-native/splash-screen'; import { LoginPage } from '../pages/login/login'; import { PostService } from './app.postservice'; import { UrlService } from './app.service'; import { GetService } from './app.getservice'; import { AppVersion } from '@ionic-native/app-version'; import { SlidersPage } from '../pages/sliders/sliders'; @NgModule({ declarations: [ MyApp, TabsPage, LoginPage, SlidersPage ], imports: [ BrowserModule, HttpModule, IonicModule.forRoot(MyApp,{ tabsHideOnSubPages: true }) ], bootstrap: [IonicApp], entryComponents: [ MyApp, LoginPage, SlidersPage ], providers: [ StatusBar, SplashScreen, AppVersion, AppRate, BarcodeScanner, {provide: ErrorHandler, useClass: IonicErrorHandler}, {provide: PostService, useClass: PostService}, {provide: UrlService, useClass: UrlService}, {provide: GetService, useClass: GetService}, ], }) export class AppModule {} 

Ionic info gives

cli packages: (C:\\Users\\akrra\\AppData\\Roaming\\npm\\node_modules)

@ionic/cli-utils  : 1.19.0
ionic (Ionic CLI) : 3.19.0

global packages:

cordova (Cordova CLI) : 7.1.0

local packages:

@ionic/app-scripts : 3.1.2
Cordova Platforms  : android 6.3.0 windows 5.0.0
Ionic Framework    : ionic-angular 3.9.2

System:

Node : v9.2.0
npm  : 5.5.1
OS   : Windows 10

Environment Variables:

ANDROID_HOME : not set

Misc:

backend : legacy

Answer 1

Ionic Cli seems to be having issues with reporting the correct error when running with --prod option. It is throwing "Can't resolve './app.module.ngfactory'" instead of the correct error message.

It is being tracked here and here .

A developer with Ionic Dan Bucholtz suggested a workaround to retrieve the actual error message here .

In the meantime, to see the errors in your application and fix them, try running:

 ./node_modules/.bin/ngc 

You can run the above command to figure out what the real issue in your app is.