如果是已有项目
对于老版本，也就是Angular 6.0.0以前：
安装@angular/service-worker：
npm install @angular/service-worker --save
在项目目录下面新增ngsw-config.json文件：
// src/ngsw-config.json
{
"index": "/index.html",
"assetGroups": [{
"name": "app",
"installMode": "prefetch",
"resources": {
"files": [
"/favicon.ico",
"/index.html"
],
"versionedFiles": [
"/*.bundle.css",
"/*.bundle.js",
"/*.chunk.js"
]
}
}, {
"name": "assets",
"installMode": "lazy",
"updateMode": "prefetch",
"resources": {
"files": [
"/assets/**"
]
}
}]
}在.angular-cli.json中启用service worker：
// .angular-cli.json
...
{
"apps": [{
...,
"serviceWorker": true
}]
}
然后在app.module.ts中注册Service Worker ：
// src/app.module.ts
...
import { ServiceWorkerModule } from '@angular/service-worker';
import { environment } from '../environments/environment';
@NgModule({
...
imports: [
... ,
ServiceWorkerModule.register('/ngsw-worker.js', { enabled: environment.production })
],
})
...
这样项目中就引入Service Worker。
对于新版本6.0.0
使用下面命令创建。
ng add @angular/pwa
将会创建：
- manifest
- service worker
Step 2. 添加Angular Material模块
安装material和cdk
npm install --save @angular/material @angular/cdk
安装主题
/* src/styles.css */ @import '~@angular/material/prebuilt-themes/deeppurple-amber.css';
安装normalize.css,作用是优化html样式
npm install --save normalize.css
然后在 styles.css中添加:
/* src/styles.css */ @import '~normalize.css/normalize.css'; @import '~@angular/material/prebuilt-themes/deeppurple-amber.css';
添加Material Module
// src/app/app.module.ts
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { MatToolbarModule } from '@angular/material';
import { AppComponent } from './app.component';
@NgModule({
declarations: [ AppComponent ],
imports: [
BrowserModule,
MatToolbarModule
],
providers: [],
bootstrap: [ AppComponent ]
})
export class AppModule { }
修改app.component.ts和app.component.html
// src/app/app.component.ts
...
export class AppComponent {
title = 'Progressive Web Cat';
}
<!-- src/app/app.component.html -->
<mat-toolbar color="primary">
{{ title }}
</mat-toolbar>Step 3.创建一个图片模块
生成模块
ng generate component img-card
将其添加到app.module.ts
// src/app/app.module.ts
...
import { AppComponent } from './app.component';
import { ImgCardComponent } from './img-card/img-card.component';
@NgModule({
declarations: [
AppComponent,
ImgCardComponent
],
...
将img-card模块添加到app.component.html中：
<!-- src/app/app.component.html -->
<mat-toolbar color="primary">
{{title}}
</mat-toolbar>
<app-img-card></app-img-card>修改app.module.ts
...
@NgModule({
...
imports: [
BrowserModule,
MatToolbarModule,
MatCardModule,
MatButtonModule
],
...
})
修改img-card.component.ts
添加一个全局的CatImage类
// src/app/img-card/img-card.component.ts
...
class CatImage {
message: string;
api: string;
fontsize: number;
}
...
修改ImgCardComponent
// src/app/img-card/img-card.component.ts
...
export class ImgCardComponent implements OnInit {
private image: CatImage = {
message: 'Progressive Web Cat',
api: 'https://cataas.com/cat/says/',
fontsize: 40
};
public src: string;
ngOnInit() {
this.generateSrc();
}
generateSrc(): void {
this.src = this.image.api + this.image.message +
'?size=' + this.image.fontsize +
'&ts=' + Date.now();
}
...修改img-card.component.html
// src/app/img-card/img-card.component.html
<mat-card>
<mat-card-actions>
<button
color="primary"
(click)="generateSrc()"
mat-button
mat-raised-button>
Give me another cat
</button>
</mat-card-actions>
<img
src="{{ src }}"
alt="Cute cat"
mat-card-image>
</mat-card>修改img-card.component.css
// src/app/img-card/img-card.component.css
.mat-card {
width: 400px;
margin: 2rem auto;
}
.mat-card .mat-card-actions {
padding-top: 0;
}
.mat-card .mat-button {
margin: 0 auto;
display: block;
}
Step 4.离线状态
修改ImgCardComponent
...
disabled = false;
ngOnInit() {
if (navigator.onLine) {
this.generateSrc();
} else {
this.disabled = true;
this.src = 'assets/offline.jepg';
}
}
...
修改`img-card.component.html
<mat-card>
<mat-card-actions>
<button
color="primary"
(click)="generateSrc()"
mat-button
disabled="disabled"
mat-raised-button>
Give me another cat
</button>
</mat-card-actions>
<img
src="{{ src }}"
alt="Cute cat"
mat-card-image>
</mat-card>然后构建部署：
ng build --prod
部署
由于https的限制，我们暂时部署到github上。
创建Github仓库
上传项目
git add .
git commit -m "Upload project to github"
git remote add origin git@github.com:{username}/{repo name}.git
git push --set-upstream origin master编译
PWCat是仓库名称
ng build --prod --base-href "/PWCat/"
新建github pages分支
git checkout -b "gh-pages" git push --set-upstream origin gh-pages git checkout master
部署到github
npm i -g angular-cli-ghpages ngh "编译的文件夹"
然后在github项目的settings里面GitHub Pages选项里设置GitHub Pages 分支为gh-pages
此时就可以使用网址https://93alliance.github.io/PWCat/访问了。
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