breautek commented on issue #448:
URL:
https://github.com/apache/cordova-plugin-file/issues/448#issuecomment-747074073
Unfortunately the `File` type is a special type that cannot be constructed
manually, therefore Cordova cannot give you the "real" (browser native `File`)
object. Only the browser itself can construct native `File` objects through
certain browser APIs.
A workaround is to read the file into a blob, which can be sent to the
server in the same way as a `File` type can be. The native `File` type is a
`Blob`, so any API that expects a `File` type will also work with a `Blob` type.
see below for an example of how to read the file as a blob:
```js
function readBinaryFile(fileEntry) {
fileEntry.file(function (file) {
var reader = new FileReader();
reader.onloadend = function() {
console.log("Successful file write: " + this.result);
displayFileData(fileEntry.fullPath + ": " + this.result);
var blob = new Blob([new Uint8Array(this.result)], { type:
"image/png" });
displayImage(blob);
};
reader.readAsArrayBuffer(file);
}, onErrorReadFile);
}
```
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