unable to display image from FILE URI, Ionic framework - ionic-framework

Question

I am trying to display image taken from camera and displaying it to the view. I have searched for this answer on many websites but nothing worked. I have tried DomSanitizer, Base64 and even photo-library but the image returned from them is not displayed.
My home.ts file is
import { Component } from '#angular/core';
import { NavController } from 'ionic-angular';
import { Camera, CameraOptions } from '#ionic-native/camera';
import { DomSanitizer } from '#angular/platform-browser';
#Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
myPhoto:any;
image;
constructor(public navCtrl: NavController, private camera: Camera, public DomSanitizer: DomSanitizer) {
}
takePhoto(){
const options: CameraOptions = {
quality: 100,
targetHeight: 320,
targetWidth: 320,
destinationType: this.camera.DestinationType.FILE_URI,
sourceType: this.camera.PictureSourceType.CAMERA,
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):
this.myPhoto = 'data:image/jpeg;base64,' + imageData;
this.image = imageData;
console.log(this.myPhoto);
alert(this.myPhoto);
}, (err) => {
// Handle error
});
}
}
Here is my home.html code
<ion-header>
<ion-navbar>
<ion-title>
Ionic Blank
</ion-title>
</ion-navbar>
</ion-header>
<ion-content padding>
<button ion-button (click)="takePhoto()" >Take Photo</button>
<!-- <img src="{{myPhoto}}"/> -->
<!-- <img src="{{image}}"/> -->
<!-- <img [src]="DomSanitizer.bypassSecurityTrustUrl(myPhoto)"/> -->
<!-- <img data-ng-src="{{myPhoto}}"/> -->
<img src="data:image/jpeg;base64,file:///storage/sdcard0/Android/data/io.ionic.starter/cache/1533211220154.jpg"/>
</ion-content>
The commented code here is that i have tried but not succeeded.

Answer 1

I used the file plugin and its method readAsDataURL. It worked fine for me. Hope it'll helps people out there :)
const options: CameraOptions = {
quality: 100,
allowEdit: true,
sourceType: this.camera.PictureSourceType.CAMERA ,
saveToPhotoAlbum: true,
correctOrientation: true,
encodingType: this.camera.EncodingType.JPEG,
destinationType: this.camera.DestinationType.FILE_URI
}
this.camera.getPicture(options).then((imageData) => {
//imageData will hold the full file path so we need to extract filename and path using file plugin
var filename = imageData.substring(imageData.lastIndexOf('/')+1);
var path = imageData.substring(0,imageData.lastIndexOf('/')+1);
//then use it in the readAsDataURL method of cordova file plugin
//this.file is declared in constructor file :File
this.file.readAsDataURL(path, filename).then(res=>{
item.pic = res;
});
}, (err) => {
alert(err);
});
link for ionic cordova file plugin

Answer 2

Finally i got solution :
In component :
takePhoto(){
const options: CameraOptions = {
quality: 100,
targetHeight: 320,
targetWidth: 320,
destinationType: this.camera.DestinationType.FILE_URI,
sourceType: this.camera.PictureSourceType.CAMERA,
encodingType: this.camera.EncodingType.JPEG,
mediaType: this.camera.MediaType.PICTURE
}
this.camera.getPicture(options).then((imgFileUri) => {
this.myImg = (<any>window).Ionic.WebView.convertFileSrc(imgFileUri);
}, (err) => {
console.log(err);
});
}
In html :
<img [src]="myImg" />
Note :
cordova-plugin-ionic-webview >= 4

Answer 3

Use this function in your ts file
takePhoto(){
const options: CameraOptions = {
quality: 100,
targetHeight: 320,
targetWidth: 320,
destinationType: this.camera.DestinationType.DATA_URL,
sourceType: this.camera.PictureSourceType.CAMERA,
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):
this.myPhoto = 'data:image/jpeg;base64,' + imageData;
this.image = imageData;
console.log(this.myPhoto);
}, (err) => {
// Handle error
});
}
Use this in your html
<img [src]="myPhoto"/>

Answer 4

From new ionic and capacitor you can do it like this:
import { Capacitor } from '#capacitor/core';
Capacitor.convertFileSrc(filePath);
File Protocol​
Capacitor and Cordova apps are hosted on a local HTTP server and are served with the http:// protocol. Some plugins, however, attempt to access device files via the file:// protocol. To avoid difficulties between http:// and file://, paths to device files must be rewritten to use the local HTTP server. For example, file:///path/to/device/file must be rewritten as http://://path/to/device/file before being rendered in the app.

Answer 5

Modify your home.ts in following way,
private openGallery(): void {
let cameraOptions = {
sourceType: this.camera.PictureSourceType.PHOTOLIBRARY,
destinationType: this.camera.DestinationType.FILE_URI,
quality: 100,
targetWidth: 1000,
targetHeight: 1000,
encodingType: this.camera.EncodingType.JPEG,
correctOrientation: true
}
this.camera.getPicture(cameraOptions)
.then(file_uri => this.imageSrc = file_uri,
err => console.log(err));
}
In your html file,
<img [src]="imageSrc"/>