Native File Picker for Android & iOS [Open Source]

lol another nice use of chatgpt. I can't help with this issue due to my inexperience but thank you for sharing your findings.

 

@yasirkula I am using your file picker, and I have a strange issue on Android, I'm trying to get an image from my gallery, but I get a prompt that says "No apps can perform this action.", my default gallery app is Google Photos, I was unable to find any solution so far, but I'm going to assume the file picker doesn't recognize Google photos as a file manager? Any solutions?

 

@AdrienIsHere Hi! May I see your code?

 

Sure thing :

Code (CSharp):

1.  
2.  public void OpenFileBrowser()
3.     {
4.         string fileType = NativeFilePicker.ConvertExtensionToFileType("png,jpg,jpeg");
5.         NativeFilePicker.Permission permission = NativeFilePicker.PickFile((path) =>
6.         {
7.             if (path == null)
8.             {
9.                 Debug.Log("action was cancelled");
10.             }
11.             else
12.             {
13.                 finalPath = path;
14.                 byte[] imageBytes = File.ReadAllBytes(finalPath);
15.                 string stringArray = ConvertFromBytesToString(imageBytes);
16.                 SaveModelAngleView.modelsList.imageReferenceBytes = stringArray;
17.                 SaveModelAngleView.SaveModelList(ModelSettings.instance.model.name);
18.             }
19.         }, new string[] { fileType });
20.     }
21.  

I also Added the following permissions in the AndroidManifest.xml, just in case READ_EXTERNAL_STORAGE, WRITE_EXTERNAL_STORAGE and MANAGE_EXTERNAL_STORAGE, in case my app was trying to access Google Files instead, but to no avail.

 

You can only pass a single extension to ConvertExtensionToFileType. Try replacing

new string[] { fileType }

with this:

NativeFilePicker.ConvertExtensionToFileType("png"), NativeFilePicker.ConvertExtensionToFileType("jpeg")

Note that for media picking, I'd recommend using NativeGallery instead. Its LoadImageAtPath function may also be used to load images other than png and jpg on Android & iOS (user can pick any image file from their Gallery freely).

 

Hey man, sorry for the late response, it worked, thanks a lot! I am going to stick with the file picker, I want my user to be able to import fbx models as well, thanks a lot!

 

Hi, from some reason on IOS there is only acesses to files and no images, this is my script:

Code (CSharp):

1. try{
2.   // Use UTIs on iOS
3.    string[] fileTypes = new string[] { "public.image", "public.movie" };
4. var permission = NativeFilePicker.PickFile(path =>
5.     {
6.         if (string.IsNullOrEmpty(path))
7.         {
8.             log.logMsg(LogType.Log, $"{nameof(InboxPopup)}: AddAttachmentImageFile(), Did Not Fetch File");
9.         }
10.         else
11.         {
12.             log.logMsg(LogType.Log, $"{nameof(InboxPopup)}: AddAttachmentImageFile(), Success !, File Path: {path}");
13.             _currentSelectedFileInfo = new FileInfo(path);
14.             log.logMsg(LogType.Log, $"File Size: {_currentSelectedFileInfo.Length}");
15.  
16.             _currentSelectedFileAttachmentPath = path;
17.             _fileAttachmentObject.SetActive(true);
18.             _fileAttachmentNameText.text = _currentSelectedFileInfo.Name;
19.             var fileSizeInMB = _currentSelectedFileInfo.Length / 1000000f;
20.  
21.             _fileAttachmentSizeText.text = IsCurrentSelectedFileSizeOk()
22.                 ? string.Format(FILE_ATTACHMENT_SIZE_TEXT, fileSizeInMB, string.Empty)
23.                 : string.Format(FILE_ATTACHMENT_SIZE_TEXT, fileSizeInMB, EXCEEDS_MAX_SIZE_TEXT);
24.         }
25.     }, fileTypes);
26. }
27. catch (Exception Ex)
28. {
29.     log.logMsg(LogType.Error, $"{nameof(InboxPopup)}: AddAttachmentImageFile(), An Exception Was Thrown, Ex: {Ex}");
30. }

 

Hi, Photos app may not show up while using this plugin you're right. For media access, consider using my other plugin Native Gallery.

 

Its work grate on IOS but for some reason it's don't work on other android device then android 13, Its look that there is no permission request, do you know why it is happen?(it's mean the issue happen on android 12 and lower)

 

I'm assuming RequestPermission returns Denied without showing a dialog. You can analyze the AndroidManifest in the resulting APK file (this can be done via Android Studio for example) and see if the READ_EXTERNAL_STORAGE permission is there, without any maxSdk attribute. You can also see if the issue can be reproduced on an empty Unity project.

 

Thank you for the fast answer,
I have this attribute on my manifest:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" tools:node="remove" />
while this is my manifest attribute:

<manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" package="com.bws" android:versionCode="1" android:versionName="1.0">

 

NativeFilePicker asks that READ_EXTERNAL_STORAGE permission so I'd recommend removing that line from your manifest.

 

Hi, yasirkula. I am using this plugin on Android, just try to pick an image file. It works well on my PC but when I built it on Android, it pops up a panel to show that "no apps can perform this action". I've already add read/write permission in manifest. Does anybody know this issue?

this is my manifest


and this is my implementation, it works on windows but not on android.

 

Looking at Discord, I'm assuming this issue is resolved. For future readers: "image/*" should be passed directly to PickFile function without going through ConvertExtensionToFileType because it's not an extension, it's an Android MIME type.

 

Hi, yasirkula,
I found out if just a * is used in the ConvertExtensionToFileType all files are greyed out.
No I set it to csv which is my filetype I want to load.
Seems this also works on MacOS.
However, on my Android device with Android11 I can see the files in my download folder. But they are still greyed out and can not be clicked. Permission request was confirmed.
Any idea what to do?

 

ConvertExtensionToFileType expects an extension. To pick any files, you can pass the following values directly to PickFile (without going through ConvertExtensionToFileType), depending on the OS:

Android:

"*/*"

iOS:

"public.item", "public.content"

Code (CSharp):

1. string[] allowedFileTypes;
2. if( Application.platform == RuntimePlatform.Android )
3.     allowedFileTypes = new string[] { "*/*" };
4. else
5.     allowedFileTypes = new string[] { "public.item", "public.content" };
6.  
7. NativeFilePicker.PickFile( callback, allowedFileTypes );

 

Thank you so much for the quick reply.
Indeed it works fine passing "*/*" instead of using the ConvertExtensionToFileType method.

 

ist it possible to add an icon to my custom file extension?

 

From Xcode, yes it seems possible with Small icon and Large icon slots. Unfortunately this isn't implemented in my automated method in Unity.

 

Hey! Great asset!
short question: is custom file support at all planned for android? It's a big shame that it only seems to work for ios...

 

Hi! I'm unfortunately unaware of a way to achieve this on Android.

 

@yasirkula hello, thank you for your amazing work

I am trying to get the path of the .obj file in IOS

Code (CSharp):

1. public void LoadObj()
2.     {
3.         if(isCheck == false)
4.         {
5.             string FileType = NativeFilePicker.ConvertExtensionToFileType("obj");
6.  
7.             NativeFilePicker.Permission permission = NativeFilePicker.PickFile((path) =>
8.             {
9.                 if (path == null)
10.                 {
11.                     Debug.Log("Canceled");
12.                 }
13.                 else
14.                 {
15.                     object = new OBJLoader().Load(path);
16.                     Debug.Log("Picked file : " + path);
17.              
18.                 }
19.             }, new string[] {FileType});
20.         }
21.      
22.     }

when I check on Mac (editor) it works fine
But, after build it provide me the path but when I try to load it,
it says ArgumentNullException: Value cannot be null

I checked github issue page and README and tried it. But it didn't work.
I was wondering if I did something wrong with the setting or there is something wrong with my code


Log
/private/var/mobile/Containers/Data/Application/E7E0ADA9-D2EB-4276-B4AC-0B8F281F5F1E/tmp/com.DefaultttCompany.tutotest-Inbox/Pin.obj objImportbtn:ClickStart() UnityEngine.EventSystems.StandaloneInputModulerocess()

ArgumentNullException: Value cannot be null. Parameter name: shader Dummiesman.OBJLoaderHelper.CreateNullMaterial () (at <00000000000000000000000000000000>:0) Dummiesman.OBJObjectBuilder.Build () (at <00000000000000000000000000000000>:0) Dummiesman.OBJLoader.Load (System.IO.Stream input) (at <00000000000000000000000000000000>:0) Dummiesman.OBJLoader.Load (System.String path, System.String mtlPath) (at <00000000000000000000000000000000>:0) objImportbtn.ClickStart () (at <00000000000000000000000000000000>:0) UnityEngine.Events.UnityEvent.Invoke () (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.StandaloneInputModule.ProcessTouchPress (UnityEngine.EventSystems.PointerEventData pointerEvent, System.Boolean pressed, System.Boolean released) (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.StandaloneInputModule.ProcessTouchEvents () (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.StandaloneInputModule.Process () (at <00000000000000000000000000000000>:0) UnityEngine.EventSystems.StandaloneInputModulerocess()

 

And I am not sure how to add obj to "Window-NativeFilePicker Custom Types"

 

@unity_2451C087C01993D824AB Hi! This error comes from OBJLoader plugin, maybe it doesn't support iOS? Since you can already pick obj files on iOS, you don't seem to make any changes to NativeFilePicker Custom Types.

PS. Also try adding a Cube to your scene if it's empty. Maybe the default shaders are stripped and that causes issues.

 

The strange thing is: on my Pixel 5, I can go directly into the folder and when using "*/*" as a filetype I can see my file, and can work without a problem with the path I am getting back from your code.
So at least on this phone it seems to work?
The only thing that doesn't work at all, is if I am trying to go through 3rd party file browsers.
I know the Pixel 5 is not really new, but I think it still has the latest android os?

 

"*/*" means all file types so it can work yeah. You'll need to verify the file extension in your callback function and you should be good to go.

 

hello, I want to thank you in advance for your work, I ran into a problem loading glb files

Code (CSharp):

1. string fileType = NativeFilePicker.ConvertExtensionToFileType("*.glb");//NativeFilePicker.ConvertExtensionToFileType("glb");
2. NativeFilePicker.Permission permission = NativeFilePicker.PickFile((path) =>
3. {
4.     var url = "file://" + path;
5.     var www = new WWW(url);
6.     byte[] bytes = System.IO.File.ReadAllBytes(path);
7.     nftInfo.file2d_md5 = null;
8.     objBtn2D.SetFile(bytes);
9. }, new string[] {fileType});

in my phone open window
"action is not supported by any application" and cancel button unity version 2021.3.24f1

 

I think glb isn't recognized by Android as a known file type. You can set fileType to "*/*" and inside PickFile's callback, verify that the picked file is indeed a glb.

 

I import in my project NativeGallery and NativeFilePicker, I have both plugins in my project (NativeGallery and NativeFilePicker) NativeGallery works but NativeFilePicker doesn't work, I use
NativeFilePicker.ConvertExtensionToFileType("obj");
NativeFilePicker.ConvertExtensionToFileType("*/*");
NativeFilePicker.ConvertExtensionToFileType("*");
NativeFilePicker.ConvertExtensionToFileType("gif");
NativeFilePicker dont work in my project

 

Code (CSharp):

1.             NativeFilePicker.PickFile((path) =>
2.             {
3.                 var url = "file://" + path;
4.                 var www = new WWW(url);
5.                 byte[] bytes = System.IO.File.ReadAllBytes(path);
6.                 nftInfo.file3d_md5 = null;
7.                 objBtn3D.SetFile(bytes);
8. #if UNITY_ANDROID
9.             }, new string[] {"*/*"});
10. #elif UNITY_IOS
11.             }, new string[] {"public.item", "public.content"});
12. #endif

WORKING ^.^
My problem is "NativeFilePicker.ConvertExtensionToFileType() " callback >> empty

 

ConvertExtensionToFileType only accepts an extension, so "*" won't work in there. However, if the extension isn't recognized by the OS, it will return an empty/null string. I'd expect gif to be recognized but obj may not be recognized.

 

I have the error "This action is not supported in more than one application" Here is the code;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;
using NativeFilePickerNamespace;

public class PlayerChangeMusic : MonoBehaviour
{
public static string FilePath;
public static int PlayerChangeInt = 0;

private void Awake() {
FilePath = PlayerPrefs.GetString("FilePathSaved");
PlayerChangeInt = PlayerPrefs.GetInt("ChangeSaved");
}
private void Start() {

}
public void OpenExplorer()
{

// Don't attempt to import/export files if the file picker is already open



string FileType = NativeFilePicker.ConvertExtensionToFileType("mp3,wav");


// Pick a PDF file
NativeFilePicker.Permission permission = NativeFilePicker.PickFile( ( path ) =>
{
if( path == null )
Debug.Log( "Operation cancelled" );
else
FilePath = path;
}, new string[] { FileType } );

PlayerPrefs.SetString("FilePathSaved", FilePath);

}
public void MyMusic()
{
PlayerChangeInt = 1;
PlayerPrefs.SetInt("ChangeSaved", PlayerChangeInt);
PlayerPrefs.Save();
}

public void GameMusic()
{
PlayerChangeInt = 0;
PlayerPrefs.SetInt("ChangeSaved", PlayerChangeInt);
PlayerPrefs.Save();
}
public void OpenExplorer2()
{
#if UNITY_ANDROID && UNITY_EDITOR
// Use MIMEs on Android
string[] fileTypes = new string[] { "*" };
#else
// Use UTIs on iOS
string[] fileTypes = new string[] { "public.image", "public.movie" };
#endif

// Pick image(s) and/or video(s)
NativeFilePicker.Permission permission = NativeFilePicker.PickMultipleFiles( ( paths ) =>
{
if( paths == null )
Debug.Log( "Operation cancelled" );
else
{
for( int i = 0; i < 1; i++ )
{
//File.Open;
//FileShare.Inheritable;
FilePath = paths;
}
}
}, fileTypes );

}
}

 

@Ramzan_16 You can't pass multiple extensions to ConvertExtensionToFileType. You should pass them one by one, one function call per extension.

 

Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much Thank you very much

 

Hello Yasir, I am having the same issue while implementing file export. No error in logcat. Here I am attaching logcat for your reference. Please help me out!
Many thanks.

 

@ekta_augview Looking at the source code, this code must be returning true since there are no exceptions in logcat. Then this value is passed on to managed code as-is. I unfortunately can't spot the problematic line in the source code. I'd recommend checking out logcat for exception messages that have tag Unity and start with label "Exception:".

 

Hello Yasir, Thanks for pointing out. I found following exception. Can you please suggest a solution for that as my path is correct but, still doesn't creating file on that location.

 

Discussion continued via e-mail.

 

Hi Yasir,
Thank you very much for the great asset,
I'm getting a weird bug where I got the native file browser and choose a specific file but the callback only execute after clicking on the power button on Oculus Quest 2 wait a second then awake it (in other word putting it on sleep then awake it)

Code (CSharp):

1.     void Start()
2.     {
3.         NativeFilePick();
4.     }
5.     private void NativeFilePick()
6.     {
7.         //string[] fileTypes = new string[] { "audio/*" };
8.         string fileTypes =  "audio/*";
9.  
10.         NativeFilePicker.Permission permission = NativeFilePicker.PickFile((paths) =>
11.         {
12.             if (paths == null)
13.                 Debug.Log("Operation cancelled");
14.             else
15.             {
16.                 print(paths.Substring(0,paths.LastIndexOf("/")));
17.  
18.                 FilePath = paths.Substring(0, paths.LastIndexOf("/"));
19.  
20.                 dir = new DirectoryInfo(FilePath);
21.                 info = dir.GetFiles("*.*");
22.                 CountFilesInDir();
23.  
24.             }
25.         }, fileTypes);
26.  
27.         Debug.Log("Permission result: " + permission);
28.  
29.  
30.     }
31.  
32.  

 

@DhiaSendi Sorry for the late response, had some very busy weeks. I'll send you an experimental version of the plugin when I get the chance. PS. Discussion continued on Discord.

 

I will say in advance that my problem is not related but native file picker.
If I use Mono (scripting backed), the ads (Unity ads) work like clockwork, but as soon as I switch to IL2CPP, the ads don't work well. Help me please.

 

@birdupcompany If it isn't related, could you ask your question here instead: https://forum.unity.com/forums/unity-ads-user-acquisition.67/

 

I am having an issue on android platform , when I try to browse files I get a message like "No apps can perform this action" I'm using the latest version updated from the asset store. What is the issue any idea? suggestion ?

 

May I see your NativeFilePicker.PickFile code?

 

Sure here it is

Code (CSharp):

1.     private void AndroidBrowseFile()
2.     {
3.         string fileType = NativeFilePicker.ConvertExtensionToFileType("*");
4.         NativeFilePicker.Permission permission = NativeFilePicker.PickFile((path) =>
5.         {
6.             if (path == null)
7.             {
8.                 Debug.Log("Operation cancelled");
9.             }
10.             else
11.             {
12.                 Debug.Log("Picked file: " + path);
13.             }
14.             SetFileInfo(path);
15.  
16.         }, fileType);
17.         Debug.Log("Permission result: " + permission);
18.     }

 

Please see: https://forum.unity.com/threads/nat...id-ios-open-source.912890/page-3#post-8987518

 

actually tried that one already. eventually, I found another solution I'm using your another package https://assetstore.unity.com/packages/tools/gui/runtime-file-browser-113006 it works better also makes UI better.

 

Hello, I tried to build my project with your plugin to Android but i got these errors:

-The type or namespace name 'SettingsProvider' could not be found

-The type or namespace name 'SettingsProviderAttribute' could not be found

- The type or namespace name 'SettingsProvider' could not be found

-The type or namespace name 'MenuItemAttribute' could not be found

- type or namespace name 'MenuItem' could not be found

Can somebody hekp me with that?

 

hello, im having a problem. when i run my app in a simulator in the unity, everything works fine but when i run it on my android phone, i can't select a file. it just shows files but i can't select it.
here's my code:

public void LoadFile()
{
string[] mimeTypes = new string[] { "model/obj", "model/mtl" };
NativeFilePicker.Permission permission = NativeFilePicker.PickFile((path) =>
{
if (path == null)
Debug.Log("Operation cancelled");
else
{
string mimeType = GetFileMimeType(path);
FinalPath = path;
Debug.Log("Picked file: " + FinalPath + " with MIME type: " + mimeType);
if (mimeType.Equals("model/obj", System.StringComparison.OrdinalIgnoreCase))
{
LoadAndDisplayObjFile(FinalPath);
}
else if (mimeType.Equals("model/mtl", System.StringComparison.OrdinalIgnoreCase))
{
LoadAndApplyMtlFile(FinalPath);
}
}
}, mimeTypes);
}

 

@tom41_10tt Hi, what is your Unity version and are you using a custom build script?

@kennethcerrado23 Hello, I couldn't find the mime type "model/obj" on the internet. Here are a list of registered mime types on Android: http://androidxref.com/4.4.4_r1/xref/frameworks/base/media/java/android/media/MediaFile.java#174. I'd recommend picking all files via "*/*" mime type (Android only) and then checking the returned file's extension.