我正在尝试创建一个显示随机文本和图片的Android应用程序(Node.js + Ionic)(文本和图片的选择存储在数组中)。我正在尝试在手机上安装此应用。该应用适用于Chrome。
当我在命令提示符中给出离子服务命令时,它在Chrome中完美运行,每次按下下一个按钮时,Random1都会给出随机文本和随机图片,每次按下下一个按钮时,Random2只会给出一个随机图片。当我在命令提示符中给出“ionic cordova run android --prod --release”命令时,我收到此错误:
[16:54:50] build prod started ...
[16:54:50] clean started ...
[16:54:50] clean finished in 6 ms
[16:54:50] copy started ...
[16:54:50] deeplinks started ...
[16:54:50] deeplinks finished in 84 ms
[16:54:50] ngc started ...
[16:55:02] typescript error
Type Random1Page in
C:/.../pages/random1/random1.ts is part of the declarations of 2 modules: AppModule in
C:/.../app/app.module.ts and
Random1PageModule in
C:/.../pages/random1/random1.module.ts!
Please consider moving Random1Page in
C:/.../pages/random1/random1.ts to a higher module that imports AppModule in
C:/.../app/app.module.ts and Random1PageModule in
C:/.../pages/random1/random1.module.ts. You
can also create a new NgModule that exports and includes Random1Pag
e in C:/.../pages/random1/random1.ts then import that NgModule in AppModule in
C:/.../app/app.module.ts and
Random1PageModule in
C:/.../pages/random1/random1.module.ts.
Typescript error - Error: The Angular AoT build failed. See the issues above
at C:/...\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:237:55
at step (C:/...\no
de_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:32:23)
at Object.next (C:/...\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:13:53)
at fulfilled (C:/...\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:4:58)
at anonymous
我从离子应用程序的文件夹中给出了这个命令。此文件夹包含以下文件夹:
这是给出此命令的正确文件夹吗?
random1.ts:
import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';
import { Random2Page } from '../random2/random2';
@IonicPage()
@Component({
selector: 'page-random1',
templateUrl: 'random1.html',
})
export class Random1Page {
random1_arr: string[]= ["text1", "text2", "text3"];
random1_act: string;
image_arr: string[]= ["../assets/imgs/Pic1.jpg", "../assets/imgs/Pic2.jpg"];
image_act: string;
person_arr: string[]= ["person1", "person2"];
person_act: string;
person_not_act: string;
counter= 0;
constructor(public navCtrl: NavController, public navParams: NavParams) {
this.image_act= '';
let random_index= Math.floor(Math.random() * 2);
this.person_act= this.person_arr[random_index];
this.person_not_act= this.person_arr[random_index? 0: 1];
this.GenerateRandom1PicturePerson();
}
GenerateRandom1PicturePerson() {
this.random1_act= this.random1_arr[Math.floor(Math.random() * this.random1_arr.length)];
this.image_act= this.image_arr[Math.floor(Math.random() * this.image_arr.length)];
this.person_act= [this.person_not_act, this.person_not_act= this.person_act][0];
this.counter++;
if(this.counter >= 7) {
this.navCtrl.push(Random2Page);
}
}
}
app.module.ts:
import { BrowserModule } from '@angular/platform-browser';
import { ErrorHandler, NgModule } from '@angular/core';
import { IonicApp, IonicErrorHandler, IonicModule } from 'ionic-angular';
import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';
import { ListPage } from '../pages/list/list';
import { Random1Page } from '../pages/random1/random1';
import { Random2Page } from '../pages/random2/random2';
import { LoggedinPage } from '../pages/loggedin/loggedin';
import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';
@NgModule({
declarations: [
MyApp,
HomePage,
ListPage,
Random1Page,
Random2Page,
LoggedinPage
],
imports: [
BrowserModule,
IonicModule.forRoot(MyApp),
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HomePage,
ListPage,
Random1Page,
Random2Page,
LoggedinPage
],
providers: [
StatusBar,
SplashScreen,
{provide: ErrorHandler, useClass: IonicErrorHandler}
]
})
export class AppModule {}
从您的问题来看,我们无法确定您是否要使用延迟加载的页面。如果您确实想使用延迟加载的页面(这样做会提高应用程序的性能),那么以下步骤将帮助您解决问题。
如果您不想在应用中使用延迟加载的页面,请检查@Sampath的答案。
当您在任何页面上添加@IonicPage()
时:
@IonicPage() // <-- Here!
@Component({
selector: 'page-random1',
templateUrl: 'random1.html',
})
export class Random1Page { ... }
意味着它将被延迟加载。您还应该在该页面的同一目录中有一个random1.module.ts
文件,如下所示:
import { NgModule } from '@angular/core';
import { IonicPageModule } from 'ionic-angular';
import { Random1Page } from './random1';
@NgModule({
declarations: [
Random1Page,
],
imports: [
IonicPageModule.forChild(Random1Page),
],
})
export class Random1PageModule {}
正如您在最后一个文件中看到的那样,Random1Page
是Random1PageModule
模块的一部分。
现在回到你得到的错误:
typescript error C:/.../ pages / random1 / random1.ts中的Type1Page类型是2个模块声明的一部分:C:/.../ app / app.module.ts中的AppModule和C中的Random1PageModule: ... /页/ random1 / random1.module.ts!
因此,为了解决这个问题,您需要从位于AppModule
文件中的app.module.ts
中删除该页面(以及其他所有延迟加载的页面):
import { BrowserModule } from '@angular/platform-browser';
import { ErrorHandler, NgModule } from '@angular/core';
import { IonicApp, IonicErrorHandler, IonicModule } from 'ionic-angular';
import { MyApp } from './app.component';
import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';
@NgModule({
declarations: [
MyApp
// HomePage,
// ListPage,
// Random1Page, <-- Remove it from here
// Random2Page,
// LoggedinPage
],
imports: [
BrowserModule,
IonicModule.forRoot(MyApp),
],
bootstrap: [IonicApp],
entryComponents: [
MyApp
// HomePage,
// ListPage,
// Random1Page, <-- And also from here
// Random2Page,
// LoggedinPage
],
providers: [
StatusBar,
SplashScreen,
{provide: ErrorHandler, useClass: IonicErrorHandler}
]
})
export class AppModule {}
您可以在Ionic博客中找到有关延迟加载的更多信息:
由于您使用了最新的CLI ionic generate page Random1Page
,因此它会为您创建一个延迟加载的模块。那就是Random1PageModule
。看来你没有在你的应用上使用延迟加载。所以删除那个module.i.e。 Random1PageModule
在你页面的文件夹下。
此后,当您创建页面时,如果您不需要使用延迟加载页面,则可以使用此CLI
。
ionic generate page Random1Page --no-module
注意:我强烈建议您使用延迟加载。它将为您的应用带来巨大的性能提升。
在这里,您可以阅读更多关于lazy loading的信息。