Camera Plugin

Ionic Native
1

Can someone help me understand the ionic-native camera plugin code…

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

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) => {
 // imageData is either a base64 encoded string or a file URI
 // If it's base64 (DATA_URL):
 let base64Image = 'data:image/jpeg;base64,' + imageData;
}, (err) => {
 // Handle error
});
2

I am currently trying to implement that plugin for the first time, and I am following this post:

https://devdactic.com/ionic-4-image-upload-storage/

Hope it helps.

3 
import { Camera, CameraOptions } from '@ionic-native/camera'; // we import the Camera here

constructor(private camera: Camera) { } // we inject the camera in our class

...

// define some options
const options: CameraOptions = {
  quality: 100, // 100 = full quality (guessed)
  destinationType: this.camera.DestinationType.FILE_URI, // define the type of destination (FILE_URI vs DATA_URL) 
  encodingType: this.camera.EncodingType.JPEG, // set the captured photo as .JPEG
  mediaType: this.camera.MediaType.PICTURE // set the camera mode as picture
}

this.camera.getPicture(options).then((imageData) => { // callback when 
 // IF file_URI so imageData is the captured photo, you can use it here
 // IF base64 (DATA_URL) use this to handle your image
 let base64Image = 'data:image/jpeg;base64,' + imageData;
}, (err) => {
 // Handle error
});

Hope it helps

4

what does the line const options: CameraOptions= means? Usually the syntax would be const varName = something…What is CameraOptions here? Some variable?

5

That’s the typescript’s interface of the object needed. It define the shape of the object.

6

Agreed…Typescript interface defines on the shape of object…So it totally depends on typescript.