readAsDataURL promise resolve with empty data at end of data:audio/mpeg;base64, in Android target API 30

[vishal-revdiwala]

Bug Report

Problem

What is expected to happen?

It should read file data and append after data:audio/mpeg;base64, this.

What does actually happen?

It returns only string: data:audio/mpeg;base64, there is no file base64 data.

Information

Command or Code

this.audioFilePath = this.platform.is('ios') ? this.file.dataDirectory : this.file.externalDataDirectory;

this.file.readAsDataURL(this.audioFilePath, fileName).then(base64 => {
console.log("Base64 DATA: ", base64);
}).catch(error => {
console.log("Base64 ERROR: ", error);
});

Environment, Platform, Device

"cordova-android": "^10.1.0",
"@ionic/angular": "^4.0.0",
"cordova-plugin-file": "^7.0.0",
"@angular/common": "^7.2.2",
"@angular/core": "^7.2.2",

Version information

Checklist

• I searched for existing GitHub issues
• I updated all Cordova tooling to most recent version
• I included all the necessary information above

[Valdenirmezadri]

same issue

[breautek]

Unable to reproduce with a pure cordova app.

Can a minimal reproduction app can be provided? It should not include frameworks, just a pure cordova app.

I've tested loading from:

• internal storage, like the application directory
• external storage like the downloads directory (written by another app), permission denied as expected
• external storage like the external application's data directory (used the file API to copy the sound file, then read from it)