@michaelwolz/camera-preview-lite v6.1.2

This fork focuses on the camera functionality of the plugin by enabling high resolution photo output and better focus handling for new iPhone models.

Version 6 of this plugin requires Capacitor 6.

PR's are greatly appreciated.

Installation

yarn add @michaelwolz/camera-preview-lite

or

npm install @michaelwolz/camera-preview-lite

Then run

npx cap sync

Extra Android installation steps

Important camera-preview 3+ requires Gradle 7. If you are using Gradle 4, please use version 2 of this plugin.

Open android/app/src/main/AndroidManifest.xml and above the closing </manifest> tag add this line to request the CAMERA permission:

<uses-permission android:name="android.permission.CAMERA" />

For more help consult the Capacitor docs.

Variables

This plugin will use the following project variables (defined in your app's variables.gradle file):

• androidxExifInterfaceVersion: version of androidx.exifinterface:exifinterface (default: 1.3.6)

Extra iOS installation steps

You will need to add two permissions to Info.plist. Follow the Capacitor docs and add permissions with the raw keys NSCameraUsageDescription.

Extra Web installation steps

Add import { CameraPreview } from '@capacitor-community/camera-preview'; in the file where you want to use the plugin.

then in html add <div id="cameraPreview"></div>

and CameraPreview.start({ parent: "cameraPreview"}); will work.

Methods

start(options)

Starts the camera preview instance.

import { CameraPreview, CameraPreviewOptions } from '@capacitor-community/camera-preview';

const cameraPreviewOptions: CameraPreviewOptions = {
  position: 'rear',
  height: 1920,
  width: 1080
};
CameraPreview.start(cameraPreviewOptions);

Remember to add the style below on your app's HTML or body element:

ion-content {
  --background: transparent;
}

Take into account that this will make transparent all ion-content on application, if you want to show camera preview only in one page, just add a custom class to your ion-content and make it transparent:

.my-custom-camera-preview-content {
  --background: transparent;
}

If the camera preview is not displaying after applying the above styles, apply transparent background color to the root div element of the parent component Ex: VueJS >> App.vue component

<template>
  <ion-app id="app">
    <ion-router-outlet />
  </ion-app>
</template>

<style>
#app {
  background-color: transparent !important;
}
<style>

stop()

Stops the camera preview instance.

CameraPreview.stop();

flip()

Switch between rear and front camera only for android and ios, web is not supported

CameraPreview.flip()

capture(options)

Take the picture. If width and height are not specified or are 0 it will use the defaults. If width and height are specified, it will choose a supported photo size that is closest to width and height specified and has closest aspect ratio to the preview (only on Android). The argument quality defaults to 85 and specifies the quality/compression value: 0=max compression, 100=max quality.

import { CameraPreviewPictureOptions } from '@capacitor-community/camera-preview';

const cameraPreviewPictureOptions: CameraPreviewPictureOptions = {
  quality: 50
};

const result = await CameraPreview.capture(cameraPreviewPictureOptions);
const base64PictureData = result.value;

captureSample(options)

Captures a sample image from the video stream. Only for Android and iOS, web implementation falls back to capture method. This can be used to perform real-time analysis on the current frame in the video. The argument quality defaults to 85 and specifies the quality/compression value: 0=max compression, 100=max quality.

import { CameraSampleOptions } from '@capacitor-community/camera-preview';

const cameraSampleOptions: CameraSampleOptions = {
  quality: 50
};

const result = await CameraPreview.captureSample(cameraSampleOptions);
const base64PictureData = result.value;

getSupportedFlashModes()

Get the flash modes supported by the camera device currently started. Returns an array containing supported flash modes. See FLASH_MODE for possible values that can be returned

import { CameraPreviewFlashMode } from '@capacitor-community/camera-preview';

const flashModes = await CameraPreview.getSupportedFlashModes();
const supportedFlashModes: CameraPreviewFlashMode[] = flashModes.result;

setFlashMode(options)

Set the flash mode. See FLASH_MODE for details about the possible values for flashMode.

const CameraPreviewFlashMode: CameraPreviewFlashMode = 'torch';

CameraPreview.setFlashMode(cameraPreviewFlashMode);

setOpacity(options: CameraOpacityOptions): Promise<{}>; ---- ANDROID only

Set the opacity for the camera preview

const myCamera = CameraPreview.start({enableOpacity: true});
myCamera.setOpacity({opacity: 0.4});

Settings

FLASH_MODE

Flash mode settings: