我无法以任何方式使用Angular 5的角度/材质。 我遵循了这个simple Tutorial,但每当我在组件HTML中插入一些材料标签时,网页就会变成空白。
使用ng serve
依赖关系:
"dependencies": {
"@angular/animations": "^5.0.5",
"@angular/cdk": "^5.0.0-rc.2",
"@angular/common": "^5.0.0",
"@angular/compiler": "^5.0.0",
"@angular/core": "^5.0.0",
"@angular/forms": "^5.0.0",
"@angular/http": "^5.0.0",
"@angular/material": "^5.0.0-rc.2",
"@angular/platform-browser": "^5.0.0",
"@angular/platform-browser-dynamic": "^5.0.0",
"@angular/router": "^5.0.0",
"core-js": "^2.4.1",
"hammerjs": "^2.0.8",
"rxjs": "^5.5.2",
"zone.js": "^0.8.14"
},
"devDependencies": {
"@angular/cli": "1.5.5",
"@angular/compiler-cli": "^5.0.0",
"@angular/language-service": "^5.0.0",
"@types/jasmine": "~2.5.53",
"@types/jasminewd2": "~2.0.2",
"@types/node": "~6.0.60",
"codelyzer": "^4.0.1",
"jasmine-core": "~2.6.2",
"jasmine-spec-reporter": "~4.1.0",
"karma": "~1.7.0",
"karma-chrome-launcher": "~2.1.1",
"karma-cli": "~1.0.1",
"karma-coverage-istanbul-reporter": "^1.2.1",
"karma-jasmine": "~1.1.0",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.1.2",
"ts-node": "~3.2.0",
"tslint": "~5.7.0",
"typescript": "~2.4.2"
}
app.component.html:
<button mat-button>My Button</button>
<router-outlet></router-outlet>
material.module.ts:
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { MatButtonModule } from '@angular/material';
@NgModule({
imports: [MatButtonModule],
exports: [MatButtonModule],
})
export class MaterialModule { }
app.module.ts:
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import {MaterialModule} from './material.module';
import { AppComponent } from './app.component';
import {RouterModule} from '@angular/router';
@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
BrowserAnimationsModule,
MaterialModule,
RouterModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
控制台窗口错误:
答案 0 :(得分:24)
错误与材料模块完全无关。
在使用<router-outlet>
指令之前需要做两件事:
RouterModule
(或其中任何“版本”
由forRoot
或forChildren
方法生成)到模块中
声明使用该指令的组件。forRoot
的{{1}}方法。否则,指令所需的服务不会被初始化。基本上,改变以下内容:
RouterModule
正如其他用户所提到的,您还没有真正配置任何路由,因此不需要使用@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
BrowserAnimationsModule,
MaterialModule,
RouterModule.forRoot([])
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
。
这基本上是No provider for ChildrenOutletContexts (injectionError)的副本(通过搜索google中的错误消息找到它,第一个结果)。下次在创建问题之前做一些研究。
答案 1 :(得分:1)
问题不在于 Angular-material
,而在于 RouterModule
。导入它并将其添加到imports
数组中。
import {RouterModule} from '@angular/router';
@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
BrowserAnimationsModule,
RouterModule, //<=======add RouterModule
MaterialModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }