[FilePicker] Combine types and multiple in Android

[EranClientside]

Hello everyone,

I saw that types is being ignored in Android when using multiple: true,
but I couldn't find any answer as to why it's implemented that way.

[robingenz]

That is a restriction in Android. The plugin cannot pass mime types if multiple is set to true. You need to implement your own logic for that (e.g. show a dialog if a file with invalid mime type is selected).

[EranClientside]

Thanks for the clarification.

[EranClientside]

I couldn't find any information about this restriction, so I did a test.
Removed the multiple == false from the condition and it worked.

const result = await FilePicker.pickFiles({
  multiple: true,
  types: [
    'application/msword',
	'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
	'application/vnd.ms-powerpoint',
	'application/vnd.openxmlformats-officedocument.presentationml.presentation',
	'application/vnd.ms-excel',
	'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
	'application/pdf',
	'text/plain',
	'text/csv',
  ],
});

Am I missing something? Is that something related to the target SDK version?

[eranshmil]

That's interesting. Work for me in Pixel 3a emulator and OnePlus 8T (Android 13 both).
I'll try to investigate that a little bit more.

[eranshmil]

I did some more tests using https://github.com/robingenz/capacitor-plugin-demo and it seems to work. (Pixel 6a emulator)

Screen_recording_20230901_142730_flz9zu.mp4

[robingenz]

Not for me. ^^

screen-20230902-093559.mp4

[eranshmil]

Well, it seems like a different behavior than using single select.
Only double tap selects the file and closes the dialog.

Screen_recording_20230904_094626_qlu3ap.mp4

[robingenz]

Seems to me like we have different Android file pickers (UI is different). Probably because you are in the emulator.