[英]Ionic 2 Error of X page is part of the declarations of 2 modules
我在這里經歷了一些SO問題。 但是我無法獲得此錯誤試圖提示的內容。 請幫幫我。
最后,HIGHER MODULE表示哪個模塊。 由於我是新手,所以這就是為什么無法正確獲取它。
我的代碼:
app.module.ts
@NgModule({
declarations: [
MyApp,
UsersPage,
ReposPage,
OrganisationsPage,
UserDetailsPage,
LoginPage
],
imports: [
BrowserModule,
HttpModule,
IonicModule.forRoot(MyApp),
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
LoginPage,
UsersPage,
ReposPage,
OrganisationsPage,
UserDetailsPage,
],
Login.module.ts
import { NgModule } from '@angular/core';
import { IonicPageModule,IonicPage } from 'ionic-angular';
import { LoginPage } from './login';
//import { IonicPage } from 'ionic-angular';
@IonicPage()
@NgModule({
declarations: [
LoginPage,
],
imports: [
IonicPageModule.forChild(LoginPage),
],
entryComponents: [
LoginPage
],
exports: [
LoginPage
]
})
export class LoginPageModule {}
根據您的評論更新代碼
app.module.ts
import { Component } from '@angular/core';
import { NavController, AlertController, LoadingController, Loading, IonicPage } from 'ionic-angular';
import { AuthService } from '../../providers/auth-service';
@IonicPage()
@Component({
selector: 'page-login',
templateUrl: 'login.html',
})
export class LoginPage {
loading: Loading;
registerCredentials = { email: '', password: '' };
constructor(private nav: NavController, private auth: AuthService, private alertCtrl: AlertController, private loadingCtrl: LoadingController) { }
public createAccount() {
this.nav.push('RegisterPage');
}
public login() {
this.showLoading()
this.auth.login(this.registerCredentials).subscribe(allowed => {
console.log(allowed)
if (allowed) {
this.nav.setRoot('HomePage');
} else {
this.showError("Access Denied");
}
},
error => {
this.showError(error);
});
}
showLoading() {
this.loading = this.loadingCtrl.create({
content: 'Please wait...',
dismissOnPageChange: true
});
this.loading.present();
}
showError(text) {
this.loading.dismiss();
let alert = this.alertCtrl.create({
title: 'Fail',
subTitle: text,
buttons: ['OK']
});
alert.present(prompt);
}
}
login.module.ts
import { NgModule } from '@angular/core';
import { IonicPageModule,IonicPage } from 'ionic-angular';
import { LoginPage } from './login';
//import { IonicPage } from 'ionic-angular';
@NgModule({
declarations: [
LoginPage,
],
imports: [
IonicPageModule.forChild(LoginPage),
],
entryComponents: [
LoginPage
],
exports: [
LoginPage
]
})
export class LoginPageModule {}
登錄名
import { Component } from '@angular/core';
import { NavController, AlertController, LoadingController, Loading, IonicPage } from 'ionic-angular';
import { AuthService } from '../../providers/auth-service';
@IonicPage()
@Component({
selector: 'page-login',
templateUrl: 'login.html',
})
export class LoginPage {
loading: Loading;
registerCredentials = { email: '', password: '' };
constructor(private nav: NavController, private auth: AuthService, private alertCtrl: AlertController, private loadingCtrl: LoadingController) { }
public createAccount() {
this.nav.push('RegisterPage');
}
public login() {
this.showLoading()
this.auth.login(this.registerCredentials).subscribe(allowed => {
console.log(allowed)
if (allowed) {
this.nav.setRoot('HomePage');
} else {
this.showError("Access Denied");
}
},
error => {
this.showError(error);
});
}
showLoading() {
this.loading = this.loadingCtrl.create({
content: 'Please wait...',
dismissOnPageChange: true
});
this.loading.present();
}
showError(text) {
this.loading.dismiss();
let alert = this.alertCtrl.create({
title: 'Fail',
subTitle: text,
buttons: ['OK']
});
alert.present(prompt);
}
}
我假設您正在使用Ionic的“延遲加載”功能。 什么是錯誤的手段,是,你包括LoginPage
中declarations
數組的NgModule
無論是在AppModule
( app.module.ts
文件)和LoginPageModule
。
為了對其進行修復,請刪除AppModule
的LoginPage
聲明,如果您需要在應用程序中的某處使用LoginPage
(例如,如果您要推送該頁面),請使用名稱,但將其用作字符串,如下所示:
// Somewhere in your app
this.navCtrl.push('LoginPage'); // <- The name of the page is used as a string
由於頁面名稱現在是字符串,因此您不再需要導入LoginPage
// import { LoginPage } from '/path/to/login-page.ts'; <- You won't need to do this anymore
更新
就像您在文檔中看到的一樣(感謝@suraj),請檢查您是否正在創建LoginPage
的模塊,如下所示:
@NgModule({
declarations: [
MyPage
],
imports: [
IonicPageModule.forChild(MyPage)
],
entryComponents: [
MyPage
]
})
export class MyPageModule {}
並檢查您是否在頁面上添加了@IonicPage()
裝飾器:
// Ionic
import { IonicPage } from 'ionic-angular';
@IonicPage()
@Component({...})
export class MyPage {}
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