Unable to download file using ionic file transfer plugin in ionic 5+

Question

here im using ionic file transfer plugin for downloading a file and when ever i tried to download the file im getting below error

and also every time i build a file i need to add the below code in android also

public class FileProvider extends androidx.core.content.FileProvider

is there any other alternative for this download . i checked capacitor site but im not sure how to use file storage plugin in that and below is my code using file transfer

 pdfUrl = 'https://www.cs.toronto.edu/~hinton/absps/NatureDeepReview.pdf';


  constructor(private transfer: FileTransfer, private file: File) {}

  download() {
    const fileTransfer: FileTransferObject = this.transfer.create();
    const url = this.pdfUrl;
  fileTransfer.download(url, this.file.dataDirectory).then((entry) => {
    console.log('download complete: ' + entry.toURL());
    this.saveData = entry.toURL();

  }, (error) => {
    // handle error
    console.log(error);
  });

Answer 1

On Android, cordova-plugin-file-transfer requires cordova-plugin-whitelist.

Install it with npm install cordova-plugin-whitelist and then run npx cap update

Also, cordova-plugin-file-transfer requires the path to the file where you want to write, you passed a directory, you should change fileTransfer.download(url, this.file.dataDirectory) to fileTransfer.download(url, this.file.dataDirectory + '/NatureDeepReview.pdf')

Answer 2

try to the following :

firstly add the plugin: cordova-plugin-whitelist

secondely in the config.xml add the following <access origin="*" />

and the reference is used to answer the issue is :
https://github.com/ionic-team/capacitor/issues/1199

Answer 3

Check permission in your android manifest file and try again if your manifest file ok you added your permission then you have to check your destination route.

in your android manifest file

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