我目前正在使用Material2在Angular的仪表板上进行样式设计。我遇到一个问题，其中应用程序中的任何弹出窗口均以透明背景显示。
我在StackBlitz中举例说明了这个问题。
在堆叠闪电战中，当我添加custom material theme时出现了问题。
当我从项目"src/theme.scss"文件中删除angular.json时，像这样使用style.css中的预制材质主题；
@import '~@angular/material/prebuilt-themes/deeppurple-amber.css';
弹出窗口的背景再次正常。
所有弹出式窗口（日期选择器，分页器等）都会发生这种情况。
我的~/src/theme.scss文件看起来像这样；
@import '~@angular/material/theming';
// always include only once per project
@include mat-core();
// define 3 theme color
// mat-palette accepts $palette-name, main, lighter and darker variants
$dashboard-theme-primary: mat-palette($mat-blue);
$dashboard-theme-accent: mat-palette($mat-grey);
$dashboard-theme-warn: mat-palette($mat-red);
// create theme (use mat-dark-theme for themes with dark backgrounds)
$dashboard-theme: mat-light-theme(
$dashboard-theme-primary,
$dashboard-theme-accent,
$dashboard-theme-warn
);
$dashboard-theme-dark: mat-dark-theme(
$dashboard-theme-primary,
$dashboard-theme-accent,
$dashboard-theme-warn
);
.dashboard-theme {
@include angular-material-theme($dashboard-theme);
}
.dashboard-theme-dark {
@include angular-material-theme($dashboard-theme-dark);
}
主题已应用于<div>中的app.component.html上的项目
非常感谢您的帮助：）
我已将整个项目更新为使用scss而不是css，然后重新构建了整个自定义theme.scss所有材料组件均已正确设置样式，可以在明暗之间动态切换主题，我什至可以设置非材质组件的样式。但是除非我使用如上所述的预构建主题，否则弹出窗口将保持透明。
为了确定我还更新了所有依赖项；
package.json：
{
"name": "DiagnosisDashboard",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/animations": "^6.1.7",
"@angular/cdk": "^6.4.7",
"@angular/common": "^6.1.0",
"@angular/compiler": "^6.1.0",
"@angular/core": "^6.1.8",
"@angular/forms": "^6.1.8",
"@angular/http": "^6.1.8",
"@angular/material": "^6.4.7",
"@angular/material-moment-adapter": "^6.4.7",
"@angular/platform-browser": "^6.1.8",
"@angular/platform-browser-dynamic": "^6.1.8",
"@angular/router": "^6.1.8",
"core-js": "^2.5.4",
"moment": "^2.22.2",
"rxjs": "^6.0.0",
"zone.js": "~0.8.26"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.8.2",
"@angular/cli": "^6.1.5",
"@angular/compiler-cli": "^6.1.0",
"@angular/language-service": "^6.1.8",
"@types/jasmine": "~2.8.6",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~10.10.1",
"codelyzer": "~4.4.4",
"jasmine-core": "~3.2.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~3.0.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "^2.0.4",
"karma-jasmine": "~1.1.1",
"karma-jasmine-html-reporter": "^1.3.1",
"protractor": "^5.4.1",
"ts-node": "~7.0.1",
"tslint": "~5.11.0",
"typescript": "~2.7.2"
}
}
angular.json：
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"my-app": {
"root": "",
"sourceRoot": "src",
"projectType": "application",
"prefix": "app",
"schematics": {},
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/my-app",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.app.json",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.scss",
"src/app/theme.scss"
],
"scripts": []
},
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"aot": true,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true
}
}
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "my-app:build"
},
"configurations": {
"production": {
"browserTarget": "my-app:build:production"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "my-app:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.spec.json",
"karmaConfig": "src/karma.conf.js",
"styles": [
"src/styles.scss",
"src/app/theme.scss"
],
"scripts": [],
"assets": [
"src/favicon.ico",
"src/assets"
]
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": [
"src/tsconfig.app.json",
"src/tsconfig.spec.json"
],
"exclude": [
"**/node_modules/**"
]
}
}
}
},
"my-app-e2e": {
"root": "e2e/",
"projectType": "application",
"architect": {
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "my-app:serve"
},
"configurations": {
"production": {
"devServerTarget": "my-app:serve:production"
}
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": "e2e/tsconfig.e2e.json",
"exclude": [
"**/node_modules/**"
]
}
}
}
}
},
"defaultProject": "my-app",
"schematics": {
"@schematics/angular:component": {
"styleext": "scss"
}
}
}
新的StackBlitz。
答案 0 :(得分：1)
“ Popups”包含在覆盖容器中，该容器是<body>的直接子代。应用于基本应用程序组件的任何样式都不会应用于叠加层容器-您必须明确地应用它。请参阅theming docs的“多个主题和基于覆盖的组件”部分。例如：
import {OverlayContainer} from '@angular/cdk/overlay';
export class AppComponent {
constructor(overlayContainer: OverlayContainer) { }
applyTheme(theme: string) {
this.overlayContainer.getContainerElement().classList.add(theme);
}
}