ionic
  1. ionic-camera
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Ionic Camera

The Ionic framework provides a Camera plugin that enables developers to easily access and manipulate the device's camera. This allows developers to build apps with features such as taking and uploading photos, scanning QR codes, and implementing facial recognition.

Syntax

The syntax for accessing the Camera plugin in Ionic is as follows:

import { Camera, CameraOptions } from '@ionic-native/camera/ngx';

constructor(private camera: Camera) { }

const options: CameraOptions = {
  quality: 100,
  destinationType: this.camera.DestinationType.FILE_URI,
  encodingType: this.camera.EncodingType.JPEG,
  mediaType: this.camera.MediaType.PICTURE
}

this.camera.getPicture(options).then((imageData) => {
 // Process image data
}, (err) => {
 // Handle error
});

Example

Here is an example of how to use the Camera plugin in an Ionic app:

<!-- camera.page.html -->
<ion-header>
  <ion-toolbar>
    <ion-title>
      Camera
    </ion-title>
  </ion-toolbar>
</ion-header>
 
<ion-content>
  <ion-grid>
    <ion-row>
      <ion-col>
        <img [src]="image"/>
      </ion-col>
    </ion-row>
    <ion-row>
      <ion-col>
        <ion-button (click)="takePicture()">Take Picture</ion-button>
      </ion-col>
    </ion-row>
  </ion-grid>
</ion-content>

// camera.page.ts
import { Component } from '@angular/core';
import { Camera, CameraOptions } from '@ionic-native/camera/ngx';
 
@Component({
  selector: 'app-camera',
  templateUrl: 'camera.page.html',
})
export class CameraPage {
 
  image: string = null;
 
  constructor(private camera: Camera) { }
 
  takePicture() {
    const options: CameraOptions = {
      quality: 100,
      destinationType: this.camera.DestinationType.FILE_URI,
      encodingType: this.camera.EncodingType.JPEG,
      mediaType: this.camera.MediaType.PICTURE
    };
 
    this.camera.getPicture(options).then((imageData) => {
      this.image = imageData;
    }, (err) => {
      console.log(err);
    });
  }
 
}

Output

The output of this example is an Ionic app that allows users to take a picture with their device's camera and display it in the app. The app uses the Camera plugin to access the device's camera and return the image data in the specified format.

Explanation

The Camera plugin in Ionic provides a set of options that can be used to customize the camera settings, such as quality, destination type, encoding type, and media type. Once the options are set, the getPicture() method is called to capture an image from the camera and return the data in the specified format.

In the example above, we are using the FILE_URI destination type to return the image as a file path. We then assign this path to the image property in the component, which is displayed in the template using an <img> tag.

Use

The Camera plugin in Ionic can be used in a variety of ways, such as:

  • Allowing users to take and upload photos in a social media app
  • Scanning QR codes or barcodes in a shopping app
  • Implementing facial recognition in a security app

Important Points

  • The Camera plugin in Ionic provides a simple way to access and manipulate the device's camera.
  • The plugin has a variety of options that can be used to customize camera settings and return image data in different formats.
  • The image data returned from the camera can be processed and used in a variety of ways in an Ionic app.

Summary

The Camera plugin in Ionic is a powerful tool for building apps with camera-related features. It allows developers to easily access and manipulate the device's camera and return image data in the desired format. With the Camera plugin, developers can build apps with features such as photo uploading, QR code scanning, and facial recognition.

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