Question

我是角度和离子的新手。我正在使用
“@ angular / forms”：“^ 4.3.1” “离子角”：“^ 3.5.3”
我已经安装了ionic-angular和@ angular / forms包。我收到以下错误消息。

Unhandled Promise rejection: Template parse errors:
'ion-card-header' is not a known element:
1. If 'ion-card-header' is an Angular component, then verify that it is part of this module.
2. If 'ion-card-header' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("

      <ion-card>
        [ERROR ->]<ion-card-header>
          Header
        </ion-card-header>

任何想法如何解决将非常感激。

我已经放入了它并且它也开始抱怨。请看下面的图片。

当我运行“离子信息”时。我在终端上收到以下消息。

$ ionic info
[WARN] You are not in an Ionic project directory. Project context may be
       missing.

global packages:

    @ionic/cli-utils : 1.5.0
    Ionic CLI        : 3.5.0

System:

    Node       : v6.11.1
    OS         : Windows 10
    Xcode      : not installed
    ios-deploy : not installed
    ios-sim    : not installed
    npm        : 3.10.10

我基本上正在创建一个库，我将需要所有组件，然后我将在一个单独的项目中使用这些组件。

 "dependencies": {
    "@angular/forms": "^4.3.1",
    "ionic-angular": "^3.5.3",
    "ionicons": "^3.0.0"
  },
  "peerDependencies": {
    "@angular/common": "^4.0.0",
    "@angular/core": "^4.0.0"
  },
  "devDependencies": {
    "@angular/common": "^4.0.0",
    "@angular/compiler": "^4.0.0",
    "@angular/compiler-cli": "^4.0.0",
    "@angular/core": "^4.0.0",
    "@angular/platform-browser": "^4.0.0",
    "@angular/platform-browser-dynamic": "^4.0.0",
    "@compodoc/compodoc": "^1.0.0-beta.9",
    "@types/jasmine": "^2.5.47",
    "@types/karma": "^0.13.35",
    "@types/node": "^7.0.18",
    "@types/webpack": "^2.2.15",
    "@types/webpack-env": "^1.13.0",
    "angular2-template-loader": "^0.6.2",
    "awesome-typescript-loader": "^3.1.3",
    "codecov": "^2.2.0",
    "codelyzer": "^3.0.1",
    "concurrently": "^3.4.0",
    "css-loader": "^0.28.1",
    "gh-pages": "^1.0.0",
    "gulp": "^3.9.1",
    "gulp-inline-ng2-template": "^4.0.0",
    "istanbul-instrumenter-loader": "^2.0.0",
    "jasmine-core": "^2.6.1",
    "json-loader": "^0.5.4",
    "karma": "^1.7.0",
    "karma-chrome-launcher": "^2.1.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "^1.1.0",
    "karma-mocha-reporter": "^2.2.3",
    "karma-sourcemap-loader": "^0.3.7",
    "karma-webpack": "^2.0.3",
    "node-sass": "^4.5.2",
    "raw-loader": "^0.5.1",
    "rimraf": "2.6.1",
    "rxjs": "^5.3.1",
    "sass-loader": "^6.0.5",
    "source-map-explorer": "^1.3.3",
    "to-string-loader": "^1.1.5",
    "ts-node": "^3.0.4",
    "tslint": "^5.2.0",
    "typescript": "2.4.0",
    "webpack": "^2.5.1",
    "webpack-angular-externals": "^1.0.2",
    "webpack-rxjs-externals": "^1.0.0",
    "zone.js": "^0.8.10"
  }

我是离子和棱角分明的新手。

Answer 1

根据您的上述代码，您错过了关闭离子卡。

<ion-card>

  <ion-card-header>

  </ion-card-header>

</ion-card>

更新1：

我在您的代码中看到的问题数量

选择器应与 .ts 文件

具有相同的名称

@Component({
 selector: 'ionic-test.component',
 templateUrl: 'ionic-test.component.html'
})

确保您的组件标记位于 ion-content 中。例如，

<ion-content>

  <ion-grid>
   <ion-row> </ion-row>
   <ion-row> </ion-row>
  </ion-grid>

  <ion-card>
   <ion-card-header>

   </ion-card-header>
  </ion-card>

</ion-content>

尝试将.scss移动到 ion-content 并将.scss名称更改为其他名称。

<ion-content class="ionic-test.component.styles">

</ion-content>

还要确保 .ts，.html，.scss 文件位于同一根文件夹中

更新2：

根据您最近的编辑可能出现的问题，

您没有创建包含所有库的node_modules文件夹，请转到终端中的项目根目录并运行以下命令。它将安装 package.json 文件中的所有模块。

npm install

注意：要查看是否安装了package.json文件中的节点模块，只需运行以下命令，方法是转到终端中的项目根目录

 npm info

创建离子项目时，您没有按照正确的步骤操作，按照ionic documentation按照步骤创建新项目，看看它是否正常工作

Answer 2

import { NgModule } from '@angular/core';
import { IonicApp, IonicModule } from 'ionic-angular';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { MyCustomModule } from '../../lib';


@NgModule({

imports: [
BrowserModule,
MyCustomModule,
IonicModule.forRoot(AppComponent)
],
declarations: [ AppComponent ],
bootstrap: [ AppComponent ]
})
export class AppModule {
}

感谢Vikram Ezhil的时间。

默认情况下，Ionic支持的主题仍无效。

Answer 3

我能够通过在 tsconfig.app.json

中禁用 angular ivy 编译器来解决这个问题

"angularCompilerOptions": {
    "enableIvy": false 
}, 
...

离子卡不是已知的元素

当我运行“离子信息”时。我在终端上收到以下消息。

3 个答案: