Einstieg

Kopieren Sie einen Einrichtungsprompt mit den Installationsanweisungen und der vollständigen Markdown-Guideline für diesen Plugin.

        Set up this Capacitor plugin in the project.

Use the package manager already used by the project.
Install these package(s): `@capgo/capacitor-printer`
Run the required Capacitor sync/update step after installation.
Read this markdown guide for the full setup steps: https://raw.githubusercontent.com/Cap-go/website/refs/heads/main/apps/docs/src/content/docs/docs/plugins/printer/getting-started.mdx
Use that guide for platform-specific steps, native file edits, permissions, config changes, imports, and usage setup.
If that guide references other docs pages, read them too.

Installieren

bun add @capgo/capacitor-printer
bunx cap sync

Importieren

import { Printer } from '@capgo/capacitor-printer';

API Übersicht

`printBase64`

Stellt die Druckoberfläche zur Druckausgabe von Dateien in base64-codierten Strings bereit.

Plattformverhalten:

iOS: Verwendet UIPrintInteractionController mit base64 dekodierten Daten
Android: Verwendet PrintManager mit base64 dekodierten Daten
Web: Erstellt ein Blob aus base64-Daten und öffnet das Druckdialogfeld

Leistungshinweis: Große Dateien können zu App-Crashes aufgrund von Speicherbeschränkungen führen, wenn base64 dekodiert wird. Für Dateien größer als 5 MB wird empfohlen, printFile() zu verwenden.

import { Printer } from '@capgo/capacitor-printer';

// Print a base64 encoded PDF
await Printer.printBase64({
  name: 'Invoice #12345',
  data: 'base64-encoded-pdf-data',
  mimeType: 'application/pdf',
});

// Print a base64 encoded image
await Printer.printBase64({
  name: 'Product Photo',
  data: '/9j/4AAQSkZJRgABAQEAYABgAAD/2wBDA...',
  mimeType: 'image/jpeg',
});

`printFile`

Stellt das Druck-UI zum Drucken von Gerätedateien bereit.

Plattformverhalten:

iOS: Verwendet UIPrintInteractionController mit Datei-URL. Unterstützt Dateien über file://-Pfade oder Pfade relativ zum Dokumentsverzeichnis der App.
Android: Verwendet PrintManager mit Dateipfad. Unterstützt sowohl content://-URIs als auch file://-Pfade.
Web: Liest Datei und öffnet Druckdialog

Unterstützte Dateitypen:

PDF-Dokumente (application/pdf)
Bilder: JPEG, PNG, GIF, HEIC, HEIF

import { Printer } from '@capgo/capacitor-printer';

// iOS: Print from app documents directory
await Printer.printFile({
  name: 'Contract',
  path: 'file:///var/mobile/Containers/Data/Application/.../Documents/contract.pdf',
});

// Android: Print from content URI
await Printer.printFile({
  name: 'Receipt',
  path: 'content://com.android.providers.downloads.documents/document/123',
  mimeType: 'application/pdf',
});

// Android: Print from file path
await Printer.printFile({
  name: 'Photo',
  path: 'file:///storage/emulated/0/Download/photo.jpg',
  mimeType: 'image/jpeg',
});

`printHtml`

Präsentiert die Druck-UI, um HTML-Dokumente auszudrucken.

Plattformenverhalten:

iOS: Rendert HTML in WKWebView, dann druckt es mithilfe von UIPrintInteractionController
Android: Rendert HTML in WebView, dann druckt es mithilfe von PrintManager
Web: Erstellt ein iframe mit HTML-Inhalt und löst das Druckdialog auf

HTML-Anforderungen:

Sollte ein vollständiges HTML-Dokument mit korrekter Struktur sein
Kann inline CSS-Stile oder Style-Tags enthalten
Außenliegende Ressourcen (Bilder, Stylesheets) sollten absolute URLs verwenden
Spezifische CSS für den Druck können mit

import { Printer } from '@capgo/capacitor-printer';

// Simple HTML document
await Printer.printHtml({
name: 'Sales Report',
html: '<html><body><h1>Q4 Sales Report</h1><p>Revenue: $125,000</p></body></html>',
});

// HTML with print-specific CSS
await Printer.printHtml({
name: 'Styled Invoice',
html: `
<html>
<head>
<style>

`printPdf`

Stellt die Druckoberfläche zum Drucken von PDF-Dokumenten vor.

Plattformverhalten:

iOS: Verwendet UIPrintInteractionController mit PDF-Datei-URL
Android: Verwendet PrintManager mit PdfDocument
Web: Erstellt Objekt-URL und öffnet Druckdialog

Anforderungen an den Dateipfad:

iOS: Muss eine Dateipfad in der Form file:// oder relativ zum Dokumentenverzeichnis der App sein
Android: Unterstützt Inhalte-URIs (aus Downloads, Medien-Store) oder Dateipfade in der Form file://
Web: Muss ein zugänglicher Dateipfad sein

import { Printer } from '@capgo/capacitor-printer';

// Print PDF from app storage
await Printer.printPdf({
  name: 'Annual Report 2024',
  path: 'file:///var/mobile/Containers/Data/Application/.../Documents/report.pdf',
});

// Print PDF from Android downloads
await Printer.printPdf({
  name: 'Downloaded Document',
  path: 'content://com.android.providers.downloads.documents/document/123',
});

`printWebView`

Stellt die Druckoberfläche zur Druckausgabe des Inhalts der Webansicht bereit.

Druckt den aktuellen Inhalt, der in der Webansicht der App angezeigt wird.

Plattformverhalten:

iOS: Verwendet UIPrintInteractionController mit WKWebView’s sichtbarer Ansicht
Android: Verwendet WebView.createPrintDocumentAdapter() mit PrintManager
Web: Auslöst window.print() für die aktuelle Seite

Druckanpassungen: Unterstützt CSS-Druckmedieneigenschaften für Anpassungen. Die derzeitigen Styles der Webansicht werden angewendet, einschließlich jeglicher

import { Printer } from '@capgo/capacitor-printer';

// Print current web view with default name
await Printer.printWebView();

// Print with custom job name
await Printer.printWebView({
name: 'Dashboard Screenshot',
});

// Use with print-specific CSS in your HTML
// Add this to your app's CSS:
//

Typenreferenz

`PrintBase64Options`

Optionen für das Drucken von base64-codiertem Daten.

export interface PrintBase64Options extends PrintOptions {
  /**
   * Valid base64 encoded string representing the file content.
   *
   * The base64 string should NOT include the data URL prefix (e.g., "data:application/pdf;base64,").
   * Only provide the raw base64 encoded content.
   *
   * **Performance Considerations:**
   * - Base64 encoding increases data size by approximately 33%
   * - Large files (>5MB) may cause memory issues when decoding
   * - Consider using printFile() for large documents
   *
   * **Platform Notes:**
   * - **iOS**: Decoded to NSData and passed to UIPrintInteractionController
   * - **Android**: Decoded to byte array and written to temporary file
   * - **Web**: Converted to Blob for printing
   *
   * @since 7.0.0
   * @example 'base64-encoded-pdf-data'
   */
  data: string;

  /**
   * MIME type of the base64 encoded data.
   *
   * **Supported types:**
   * - `application/pdf` - PDF documents
   * - `image/jpeg` - JPEG images
   * - `image/.png` - PNG images
   * - `image/.gif` - GIF images (iOS/Android only)
   * - `image/heic` - HEIC images (iOS only)
   * - `image/heif` - HEIF images (iOS only)
   *
   * **Platform Support:**
   * - All platforms support PDF, JPEG, and PNG
   * - GIF support varies by platform
   * - HEIC/HEIF are iOS-specific formats
   *
   * @since 7.0.0
   * @example 'application/pdf'
   * @example 'image/jpeg'
   */
  mimeType: string;
}

`PrintFileOptions`

Optionen zum Ausdrucken von Dateien aus der Gerätespeicherung.

export interface PrintFileOptions extends PrintOptions {
  /**
   * Path to the file to print.
   *
   * **iOS Path Formats:**
   * - `file://` URL: Full file URL path
   * - Relative path: Path relative to app's documents directory
   * - Must be within app's accessible directories (documents, temporary, cache)
   *
   * **Android Path Formats:**
   * - `content://` URI: Content provider URI (recommended for external files)
   * - `file://` path: Direct file system path
   * - Must have read permission for the file
   *
   * **Common Use Cases:**
   * - App documents: Files saved in app's document directory
   * - Downloads: Files from system downloads folder (use content:// on Android)
   * - Temporary files: Files in app's temporary/cache directory
   * - Shared storage: Files from external storage (Android, requires permissions)
   *
   * @since 7.0.0
   * @platform ios Supports file:// paths and relative paths
   * @platform android Supports content:// URIs and file:// paths
   * @example 'content://com.android.providers.downloads.documents/document/123'
   * @example 'file:///var/mobile/Containers/Data/Application/.../Documents/document.pdf'
   * @example 'file:///storage/emulated/0/Download/receipt.pdf'
   */
  path: string;

  /**
   * MIME type of the file.
   *
   * **Platform Behavior:**
   * - **Android**: REQUIRED for content:// URIs. Helps the system determine how to handle the file.
   *                Optional for file:// paths (auto-detected from extension).
   * - **iOS**: Ignored. File type is auto-detected from file extension.
   * - **Web**: Optional. Auto-detected if not provided.
   *
   * **Common MIME Types:**
   * - `application/pdf` - PDF documents
   * - `image/jpeg` - JPEG images
   * - `image/.png` - PNG images
   * - `image/.gif` - GIF images
   *
   * @since 7.0.0
   * @default Undefined (auto-detected from file extension)
   * @platform android Used for content:// URIs and file type detection
   * @platform ios Ignored (auto-detected)
   * @example 'application/pdf'
   * @example 'image/jpeg'
   */
  mimeType?: string;
}

`PrintHtmlOptions`

Optionen zum Ausdrucken von HTML-Inhalten.

export interface PrintHtmlOptions extends PrintOptions {
  /**
   * HTML content to print.
   *
   * **Content Requirements:**
   * - Should be a complete HTML document with `<html>`, `<head>`, and `<body>` tags
   * - Can include inline CSS styles or `<style>` tags
   * - External resources (images, fonts) should use absolute URLs
   * - JavaScript is not executed during print rendering
   *
   * **Print Optimization Tips:**
   * - Use `@media print` CSS rules for print-specific styling
   * - Control page breaks with `page-break-before`, `page-break-after`, `page-break-inside`
   * - Hide UI elements using `.no-print { display: none; }` class
   * - Adjust font sizes for readability (12pt is standard for print)
   * - Use print-friendly colors (avoid dark backgrounds)
   *
   * **Platform Rendering:**
   * - **iOS**: Rendered in WKWebView before printing
   * - **Android**: Rendered in WebView before printing
   * - **Web**: Rendered in hidden iframe before printing
   *
   * **Character Encoding:**
   * - UTF-8 is recommended and default
   * - Include charset in HTML: `<meta charset="UTF-8">`
   *
   * @since 7.0.0
   * @example '<html><body><h1>Hello World</h1><p>This is a test document.</p></body></html>'
   * @example
   * ```typescript
   * const htmlWithStyles = `
   *   <html>
   *     <head>
   *       <meta charset="UTF-8">
   *       <style>
   *         @media print {
   *           body { font-family: Arial, sans-serif; font-size: 12pt; }
   *           .no-print { display: none; }
   *           h1 { color: #333; page-break-before: always; }
   *         }
   *       </style>
   *     </head>
   *     <body>
   *       <h1>Invoice #12345</h1>
   *       <p>Amount: $299.99</p>
   *     </body>
   *   </html>
   * `;
   * ```
   */
  html: string;
}

`PrintPdfOptions`

Optionen zum Ausdrucken von PDF-Dokumenten.

export interface PrintPdfOptions extends PrintOptions {
  /**
   * Path to the PDF document.
   *
   * **iOS Path Formats:**
   * - `file://` URL: Full file URL path to PDF document
   * - Relative path: Path relative to app's documents directory
   * - Must be within app's accessible directories (documents, temporary, cache)
   * - PDF must be valid and not password-protected
   *
   * **Android Path Formats:**
   * - `content://` URI: Content provider URI (recommended for external PDFs)
   * - `file://` path: Direct file system path to PDF
   * - Must have read permission for the file
   * - Supports both single-page and multi-page PDFs
   *
   * **Web Path Formats:**
   * - Relative or absolute path accessible from web context
   * - Must be a valid PDF file
   *
   * **Validation:**
   * - File must exist at the specified path
   * - File must be a valid PDF (checked by magic number/header)
   * - File must be readable by the app
   *
   * **Common Sources:**
   * - App documents: PDFs saved in app's document directory
   * - Downloads: PDFs from system downloads (use content:// on Android)
   * - Generated PDFs: Temporary PDFs created by the app
   * - Network downloads: PDFs downloaded and saved locally
   *
   * @since 7.0.0
   * @platform ios Supports file:// paths and relative paths
   * @platform android Supports content:// URIs and file:// paths
   * @platform web Supports accessible file paths
   * @example 'content://com.android.providers.downloads.documents/document/123'
   * @example 'file:///var/mobile/Containers/Data/Application/.../Documents/document.pdf'
   * @example 'file:///storage/emulated/0/Download/report.pdf'
   * @example 'Documents/invoice-2024.pdf'
   */
  path: string;
}

`PrintOptions`

Grundlegende Optionen für alle Druckvorgänge.

export interface PrintOptions {
  /**
   * Name of the print job.
   *
   * **Usage:**
   * - Displayed in the system print queue
   * - Shown in print history/logs
   * - May appear in printer status displays
   * - Used as default filename for "Save as PDF" option
   *
   * **Platform Behavior:**
   * - **iOS**: Shown in print preview header and activity view
   * - **Android**: Displayed in print job notification and print queue
   * - **Web**: Used as document title in print dialog
   *
   * **Best Practices:**
   * - Use descriptive names (e.g., "Invoice #12345", "Q4 Report")
   * - Keep under 50 characters for better display
   * - Avoid special characters that may cause issues in filenames
   * - Include relevant identifiers (order numbers, dates, etc.)
   *
   * **Examples:**
   * - "Invoice #12345"
   * - "Sales Report - 2024 Q4"
   * - "Customer Receipt - John Doe"
   * - "Product Photo - SKU-ABC123"
   *
   * @since 7.0.0
   * @default 'Document'
   * @platform ios Shown in print preview and activity view
   * @platform android Shown in print queue and notifications
   * @platform web Used as document title in print dialog
   * @example 'Invoice #12345'
   * @example 'Annual Report 2024'
   * @example 'Receipt - Order #789'
   */
  name?: string;
}

Quellwahrheit

Diese Seite wird aus dem Plugin generiert. src/definitions.tsRe-run the sync when the public API changes upstream.