No apps can perform this action

[Isaac-dot]

Reproduction steps
If I press the file load button, it will show "No apps can perform this action" like the following screen shot

Platform specs

Please provide the following info if this is a Unity 3D repository.

• Unity version: e.g. 2018.3.1f1
• Platform: Android
• Device: MI 9 SE, Android 9
• How did you download the plugin: * Asset Store*

Additional info
this is the button function.
`using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;

public class FilePickerSystem : MonoBehaviour
{
public string FinalPath;

public void LoadFile()
{
    string FileType = NativeFilePicker.ConvertExtensionToFileType("*");
    NativeFilePicker.Permission permission = NativeFilePicker.PickFile((path) => 
    {
        if (path == null)
            Debug.Log("Operation cancelled");
        else
        {
            FinalPath = path;
            Debug.Log("Picked file: " + FinalPath);
        }
    }, new string[] { FileType });
}

}
`

[yasirkula]

I don't think NativeFilePicker.ConvertExtensionToFileType("*") will work. On Android, you can pass a hardcoded new string[] { "*/*" } or new string[] { "application/octet-stream" } to PickFile.

[Isaac-dot]

@yasirkula
thank you for reply, so sorry that i am not good at coding. The code above is from online tutorial. could u explan that in detail

[yasirkula]

You can replace new string[] { FileType }) with my suggestions (assuming this app won't be published on iOS).

PS. Or just change: string FileType = "*/*";

[Isaac-dot]

ah ha it works. thank you so much. i used string FileType = "*/*"; so this one only work on android right and if i would like to publish on iOS what should i change. and on android is it possible to just pick image file by using string FileType = "png,jpg,jpeg";

[yasirkula]

On iOS, I think you can try "public.data" or "public.content" as FileType. You can check Application.platform to switch its value depending on the platform.

To fetch image files only, I'd recommend using NativeGallery instead. If you'd still like to use NativeFilePicker, then:

NativeFilePicker.Permission permission = NativeFilePicker.PickFile((path) => 
{
	if (path == null)
		Debug.Log("Operation cancelled");
	else
	{
		FinalPath = path;
		Debug.Log("Picked file: " + FinalPath);
	}
}, new string[] { NativeFilePicker.ConvertExtensionToFileType("png"), NativeFilePicker.ConvertExtensionToFileType("jpg") });

[Isaac-dot]

thanks alot. it works really well. i will try iOS platform in the future