PHOTO VIEWER

@capacitor-community/photoviewer

Capacitor community plugin for Web and Native Photo Viewer allowing to open fullscreen

- a selected picture from a grid of pictures with zoom-in and sharing features.

- a single picture with zoom-in and sharing features.

A picture can be acessed by image web url, base64 data or from internal device for iOS and Android.

- iOS

• file:///var/mobile/Media/DCIM/100APPLE/YOUR_IMAGE.JPG
• capacitor://localhost/_capacitor_file_/var/mobile/Containers/Data/Application/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX/Documents/photo1.jpg

- Android

• file:///sdcard/DCIM/YOUR_IMAGE.JPG
• file:///sdcard/Pictures/YOUR_IMAGE.JPG
• http://localhost/_capacitor_file_/storage/emulated/0/Pictures/JPEG_20221001_113835_7582877022250987909.jpg

On iOS plugin, the creation of a movie from the pictures stored in the All Photos folder is now available.

Maintainers

Maintainer	GitHub	Social
Robin Genz	robingenz	@robin_genz

Browser Support

The plugin follows the guidelines from the Capacitor Team,

• Capacitor Browser Support

meaning that it will not work in IE11 without additional JavaScript transformations, e.g. with Babel.

Installation

npm install @capacitor-community/photoviewer
npx cap sync

Since version 3.0.4, modify the capacitor.config.ts to add the image location to save the image downloaded from an HTTP request to the internal disk.

const config: CapacitorConfig = {
  ...
  plugins: {
    PhotoViewer: {
      iosImageLocation: 'Library/Images',
      androidImageLocation: 'Files/Images',
    }
  }
  ...
};

export default config;

iOS

• in Xcode, open Info.plist and add a new Information Property like Privacy - Photo Library Usage Description and set a value to We need to write photos. This is required to have the Shareof images and the create Movie working.

Android

• on the res project folder open the file_paths.xml file and add

    <files-path name="files" path="."/>

• open the build.gradle (Project:android) and make sure that kotlin is declared

...
buildscript {
    ext.kotlin_version = '1.8.20'
    dependencies {
        ...
        classpath 'com.android.tools.build:gradle:8.0.0'
        classpath 'com.google.gms:google-services:4.3.15'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}
...

• open the build.gradle (Module: android.app) and do the following

  • after apply plugin: 'com.android.application' add

    apply plugin: 'kotlin-android'
    apply plugin: 'kotlin-kapt'
    

  • in the android block add

    buildFeatures {
        dataBinding = true
    }
    

  • in the repositories block add

    maven { url 'https://jitpack.io' }
    

  • in the dependencies block add

    implementation "androidx.core:core-ktx:1.10.0"
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    

• Now run Sync Project with Gradle Files and you are ready.

Web, PWA

The plugin works with the companion Stencil component jeep-photoviewer. It is mandatory to install it

npm install --save-dev jeep-photoviewer@latest

Build your App

When your app is ready

npm run build
npx cap copy
npx cap copy web
npx cap open android   // Android
npx cap open ios       // iOS
npm run serve          // Web

Supported methods

Name	Android	iOS	Electron	Web
echo	✅	✅	❌	✅
show	✅	✅	❌	✅
saveImageFromHttpToInternal	❌	✅	❌	❌
getInternalImagePaths	❌	✅	❌	❌

Documentation

API_Documentation

Applications demonstrating the use of the plugin

Ionic/Angular

• angular-photoviewer-app

Ionic/Vue

• vue-photoviewer-app

React

• vite-react-photoviewer-app

Usage

• In your Ionic/Vue App

• In your Ionic/Angular App

iOS and Android

• In Gallery mode (Image Array with more than one Image):
  • make a tap will select the image and go fullscreen
  • In Fulscreen
    • tap will hide the share and exit buttons and open the window for other gestures.
    • double tap to zoom in and out
    • pinch with your two fingers
    • tap will show the share and exit buttons and leave the window for other gestures.
    • double tap will hide the buttons and zoom in straightforward (iOS only)
• In One Image mode (Image Array with one Image only):
  • pinch-zoom and pan with your two fingers
  • double-tap to zoom directly to the maximum zoom
• You can pass customHeaders in the options object to let the plugin pass those headers to the http request for the image. For example:

PhotoViewer.show({
  images: [
    {
      url: 'https://picsum.photos/id/237/200/300',
      title: 'Title'
    },
    {
      url: 'https://picsum.photos/id/238/200/300',
      title: 'Title'
    },
  ],
  options: {
    customHeaders: {
      accept: 'image/jpeg, image/png, image/gif, image/webp, image/svg+xml, image/*;q=0.8, */*;q=0.5',
      cookie: 'session=foo;',
    },
  },
  mode: 'slider'
})

Dependencies

The Android code is using MikeOrtiz/TouchImageView allowing for the zooming in picture (https://github.com/MikeOrtiz/TouchImageView)

The iOS code is using SDWebImage for http async image downloader (https://github.com/SDWebImage/SDWebImage) and ISVImageScrollView for the pinch-zoom and pan in picture (https://github.com/yuriiik/ISVImageScrollView)

Contributors ✨

Thanks goes to these wonderful people (emoji key):

This project follows the all-contributors specification. Contributions of any kind welcome!