Available on Asset Store: https://assetstore.unity.com/packages/tools/integration/native-gallery-for-android-ios-112630
Forum Thread: https://forum.unity.com/threads/native-gallery-for-android-ios-open-source.519619/
Discord: https://discord.gg/UJJt549AaV
This plugin helps you save your images and/or videos to device Gallery on Android and Photos on iOS (other platforms aren't supported). It is also possible to pick an image or video from Gallery/Photos.
There are 5 ways to install this plugin:
"com.yasirkula.nativegallery": "https://github.com/yasirkula/UnityNativeGallery.git",openupm add com.yasirkula.nativegalleryNativeGallery no longer requires any manual setup on Android.
IMPORTANT: If you are targeting iOS 14 or later, you need to build your app with Xcode 12 or later to avoid any permission issues.
There are two ways to set up the plugin on iOS:
a. Automated Setup for iOS
b. Manual Setup for iOS
You can't. On iOS, these files are stored in an internal directory that we have no access to (I don't think there is even a way to fetch that internal path).
Only Android & iOS platforms are supported. Editor functionality is for preview purposes only and uses Unity's Editor-only API.
If you are sure that your plugin is up-to-date, then enable Custom Proguard File option from Player Settings and add the following line to that file: -keep class com.yasirkula.unity.* { *; }
This happens on Android 33+ devices when Target API Level is set to 33 or later. The recommended solution is to copy the image to persistentDataPath because otherwise, the source image can be deleted by the user from Gallery, deleted by the operating system to free up space or overwritten by NativeGallery in the next PickImage call (if NativeGallery can't determine the image's source file path, then it copies the picked image to a fixed location in temporaryCachePath and thus, the image can easily be overwritten). If you still would like to persist access to the image, you can call the following code in your Awake function but be aware that this fix has a hard limit of 512 files:
#if !UNITY_EDITOR && UNITY_ANDROID
using( AndroidJavaClass ajc = new AndroidJavaClass( "com.yasirkula.unity.NativeGalleryMediaPickerFragment" ) )
ajc.SetStatic<bool>( "GrantPersistableUriPermission", true );
#endifandroid:requestLegacyExternalStorage attribute in AndroidManifest.xml fixes a rare UnauthorizedAccessException on Android 10 but requires you to update your Android SDK to at least SDK 29. If this isn't possible for you, you should open NativeGallery.aar with WinRAR or 7-Zip and then remove the <application ... /> tag from AndroidManifest.xml.
Make sure that you've set the Write Permission to External (SDCard) in Player Settings.
Declare the WRITE_EXTERNAL_STORAGE permission manually in your Plugins/Android/AndroidManifest.xml file with the tools:node="replace" attribute as follows: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" tools:node="replace"/> (you'll need to add the xmlns:tools="http://schemas.android.com/tools" attribute to the <manifest ...> element).
Make sure that the filename parameter of the Save function includes the file's extension, as well
NativeGallery.SaveImageToGallery( byte[] mediaBytes, string album, string filename, MediaSaveCallback callback = null ): use this function if you have the raw bytes of the image.
bool success and string path parameters. If the image/video is saved successfully, success becomes true. On Android, path stores where the image/video was saved to (is null on iOS). If the raw filepath can't be determined, an abstract Storage Access Framework path will be returned (File.Exists returns false for that path)IMPORTANT: NativeGallery will never overwrite existing media on the Gallery. If there is a name conflict, NativeGallery will ensure a unique filename. So don't put {0} in filename anymore (for new users, putting {0} in filename was recommended in order to ensure unique filenames in earlier versions, this is no longer necessary).
NativeGallery.SaveImageToGallery( string existingMediaPath, string album, string filename, MediaSaveCallback callback = null ): use this function if the image is already saved on disk. Enter the file's path to existingMediaPath.
NativeGallery.SaveImageToGallery( Texture2D image, string album, string filename, MediaSaveCallback callback = null ): use this function to easily save a Texture2D to Gallery/Photos. If filename ends with ".jpeg" or ".jpg", texture will be saved as JPEG; otherwise, it will be saved as PNG.
NativeGallery.SaveVideoToGallery( byte[] mediaBytes, string album, string filename, MediaSaveCallback callback = null ): use this function if you have the raw bytes of the video. This function works similar to its SaveImageToGallery equivalent.
NativeGallery.SaveVideoToGallery( string existingMediaPath, string album, string filename, MediaSaveCallback callback = null ): use this function if the video is already saved on disk. This function works similar to its SaveImageToGallery equivalent.
NativeGallery.GetImageFromGallery( MediaPickCallback callback, string title = "", string mime = "image/*" ): prompts the user to select an image from Gallery/Photos.
NativeGallery.GetVideoFromGallery( MediaPickCallback callback, string title = "", string mime = "video/*" ): prompts the user to select a video from Gallery/Photos. This function works similar to its GetImageFromGallery equivalent.
NativeGallery.GetAudioFromGallery( MediaPickCallback callback, string title = "", string mime = "audio/*" ): prompts the user to select an audio file. This function works similar to its GetImageFromGallery equivalent. Works on Android only.
NativeGallery.GetMixedMediaFromGallery( MediaPickCallback callback, MediaType mediaTypes, string title = "" ): prompts the user to select an image/video/audio file. This function is available on Android 19 and later and all iOS versions. Selecting audio files is not supported on iOS.
MediaType.Image | MediaType.Video)NativeGallery.GetImagesFromGallery( MediaPickMultipleCallback callback, string title = "", string mime = "image/*" ): prompts the user to select one or more images from Gallery/Photos. MediaPickMultipleCallback takes a string[] parameter which stores the path(s) of the selected image(s)/video(s), or null if nothing is selected. Selecting multiple files from gallery is only available on Android 18 and later and iOS 14 and later. Call CanSelectMultipleFilesFromGallery() to see if this feature is available.
NativeGallery.GetVideosFromGallery( MediaPickMultipleCallback callback, string title = "", string mime = "video/*" ): prompts the user to select one or more videos from Gallery/Photos. This function works similar to its GetImagesFromGallery equivalent.
NativeGallery.GetAudiosFromGallery( MediaPickMultipleCallback callback, string title = "", string mime = "audio/*" ): prompts the user to select one or more audio files. This function works similar to its GetImagesFromGallery equivalent. Works on Android only.
NativeGallery.GetMixedMediasFromGallery( MediaPickMultipleCallback callback, MediaType mediaTypes, string title = "" ): prompts the user to select one or more image/video/audio files. Selecting audio files is not supported on iOS.
NativeGallery.CanSelectMultipleFilesFromGallery(): returns true if selecting multiple images/videos from Gallery/Photos is possible on this device.
NativeGallery.CanSelectMultipleMediaTypesFromGallery(): returns true if GetMixedMediaFromGallery/GetMixedMediasFromGallery functions are supported on this device.
NativeGallery.IsMediaPickerBusy(): returns true if the user is currently picking media from Gallery/Photos. In that case, another GetImageFromGallery, GetVideoFromGallery or GetAudioFromGallery request will simply be ignored.
Almost all of these functions return a NativeGallery.Permission value. More details about it is available below.
Beginning with 6.0 Marshmallow, Android apps must request runtime permissions before accessing certain services, similar to iOS. Note that NativeGallery doesn't require any permissions for picking images/videos from Photos on iOS 11+, picking images/videos from Gallery on Android 34+ and saving images/videos to Gallery on Android 29+, so no permission dialog will be shown in these cases and the permission functions will return Permission.Granted.
There are two functions to handle permissions with this plugin:
NativeGallery.Permission NativeGallery.CheckPermission( PermissionType permissionType, MediaType mediaTypes ): checks whether the app has access to Gallery/Photos or not. PermissionType can be either Read (for GetImageFromGallery/GetVideoFromGallery functions) or Write (for SaveImageToGallery/SaveVideoToGallery functions).
NativeGallery.Permission is an enum that can take 3 values:
NativeGallery.Permission NativeGallery.RequestPermission( PermissionType permissionType, MediaType mediaTypes ): requests permission to access Gallery/Photos from the user and returns the result. It is recommended to show a brief explanation before asking the permission so that user understands why the permission is needed and doesn't click Deny or worse, "Don't ask again". Note that the SaveImageToGallery/SaveVideoToGallery and GetImageFromGallery/GetVideoFromGallery functions call RequestPermission internally and execute only if the permission is granted (the result of RequestPermission is also returned).
void NativeGallery.RequestPermissionAsync( PermissionCallback callback, PermissionType permissionType, MediaType mediaTypes ): Asynchronous variant of RequestPermission. Unlike RequestPermission, this function doesn't freeze the app unnecessarily before the permission dialog is displayed. So it's recommended to call this function instead.
NativeGallery.Permission permission parameterTask<NativeGallery.Permission> NativeGallery.RequestPermissionAsync( PermissionType permissionType, MediaType mediaTypes ): Another asynchronous variant of RequestPermission (requires Unity 2018.4 or later).
NativeGallery.OpenSettings(): opens the settings for this app, from where the user can manually grant permission in case current permission state is Permission.Denied (on Android, the necessary permission is named Storage and on iOS, the necessary permission is named Photos).
bool NativeGallery.CanOpenSettings(): on iOS versions prior to 8.0, opening settings from within app is not possible and in this case, this function returns false. Otherwise, it returns true.
NativeGallery.ImageProperties NativeGallery.GetImageProperties( string imagePath ): returns an ImageProperties instance that holds the width, height, mime type and EXIF orientation information of an image file without creating a Texture2D object. Mime type will be null, if it can't be determined
NativeGallery.VideoProperties NativeGallery.GetVideoProperties( string videoPath ): returns a VideoProperties instance that holds the width, height, duration (in milliseconds) and rotation information of a video file. To play a video in correct orientation, you should rotate it by rotation degrees clockwise. For a 90-degree or 270-degree rotated video, values of width and height should be swapped to get the display size of the video.
NativeGallery.MediaType NativeGallery.GetMediaTypeOfFile( string path ): returns the media type of the file at the specified path: Image, Video, Audio or neither of these (if media type can't be determined)
Texture2D NativeGallery.LoadImageAtPath( string imagePath, int maxSize = -1, bool markTextureNonReadable = true, bool generateMipmaps = true, bool linearColorSpace = false ): creates a Texture2D from the specified image file in correct orientation and returns it. Returns null, if something goes wrong.
async Task<Texture2D> NativeGallery.LoadImageAtPathAsync( string imagePath, int maxSize = -1, bool markTextureNonReadable = true ): asynchronous variant of LoadImageAtPath (requires Unity 2018.4 or later). Whether or not the returned Texture2D has mipmaps enabled depends on UnityWebRequestTexture's implementation on the target Unity version. Note that it isn't possible to load multiple images simultaneously using this function.
Texture2D NativeGallery.GetVideoThumbnail( string videoPath, int maxSize = -1, double captureTimeInSeconds = -1.0, bool markTextureNonReadable = true, bool generateMipmaps = true, bool linearColorSpace = false ): creates a Texture2D thumbnail from a video file and returns it. Returns null, if something goes wrong.
async Task<Texture2D> NativeGallery.GetVideoThumbnailAsync( string videoPath, int maxSize = -1, double captureTimeInSeconds = -1.0, bool markTextureNonReadable = true ): asynchronous variant of GetVideoThumbnail (requires Unity 2018.4 or later). Whether or not the returned Texture2D has mipmaps enabled depends on UnityWebRequestTexture's implementation on the target Unity version. Note that it isn't possible to generate multiple video thumbnails simultaneously using this function.
The following code has three functions:
void Update()
{
if( Input.GetMouseButtonDown( 0 ) )
{
if( Input.mousePosition.x < Screen.width / 3 )
{
// Take a screenshot and save it to Gallery/Photos
StartCoroutine( TakeScreenshotAndSave() );
}
else
{
// Don't attempt to pick media from Gallery/Photos if
// another media pick operation is already in progress
if( NativeGallery.IsMediaPickerBusy() )
return;
if( Input.mousePosition.x < Screen.width * 2 / 3 )
{
// Pick a PNG image from Gallery/Photos
// If the selected image's width and/or height is greater than 512px, down-scale the image
PickImage( 512 );
}
else
{
// Pick a video from Gallery/Photos
PickVideo();
}
}
}
}
// Example code doesn't use this function but it is here for reference. It's recommended to ask for permissions manually using the
// RequestPermissionAsync methods prior to calling NativeGallery functions
private async void RequestPermissionAsynchronously( NativeGallery.PermissionType permissionType, NativeGallery.MediaType mediaTypes )
{
NativeGallery.Permission permission = await NativeGallery.RequestPermissionAsync( permissionType, mediaTypes );
Debug.Log( "Permission result: " + permission );
}
private IEnumerator TakeScreenshotAndSave()
{
yield return new WaitForEndOfFrame();
Texture2D ss = new Texture2D( Screen.width, Screen.height, TextureFormat.RGB24, false );
ss.ReadPixels( new Rect( 0, 0, Screen.width, Screen.height ), 0, 0 );
ss.Apply();
// Save the screenshot to Gallery/Photos
NativeGallery.Permission permission = NativeGallery.SaveImageToGallery( ss, "GalleryTest", "Image.png", ( success, path ) => Debug.Log( "Media save result: " + success + " " + path ) );
Debug.Log( "Permission result: " + permission );
// To avoid memory leaks
Destroy( ss );
}
private void PickImage( int maxSize )
{
NativeGallery.Permission permission = NativeGallery.GetImageFromGallery( ( path ) =>
{
Debug.Log( "Image path: " + path );
if( path != null )
{
// Create Texture from selected image
Texture2D texture = NativeGallery.LoadImageAtPath( path, maxSize );
if( texture == null )
{
Debug.Log( "Couldn't load texture from " + path );
return;
}
// Assign texture to a temporary quad and destroy it after 5 seconds
GameObject quad = GameObject.CreatePrimitive( PrimitiveType.Quad );
quad.transform.position = Camera.main.transform.position + Camera.main.transform.forward * 2.5f;
quad.transform.forward = Camera.main.transform.forward;
quad.transform.localScale = new Vector3( 1f, texture.height / (float) texture.width, 1f );
Material material = quad.GetComponent<Renderer>().material;
if( !material.shader.isSupported ) // happens when Standard shader is not included in the build
material.shader = Shader.Find( "Legacy Shaders/Diffuse" );
material.mainTexture = texture;
Destroy( quad, 5f );
// If a procedural texture is not destroyed manually,
// it will only be freed after a scene change
Destroy( texture, 5f );
}
} );
Debug.Log( "Permission result: " + permission );
}
private void PickVideo()
{
NativeGallery.Permission permission = NativeGallery.GetVideoFromGallery( ( path ) =>
{
Debug.Log( "Video path: " + path );
if( path != null )
{
// Play the selected video
Handheld.PlayFullScreenMovie( "file://" + path );
}
}, "Select a video" );
Debug.Log( "Permission result: " + permission );
}
// Example code doesn't use this function but it is here for reference
private void PickImageOrVideo()
{
if( NativeGallery.CanSelectMultipleMediaTypesFromGallery() )
{
NativeGallery.Permission permission = NativeGallery.GetMixedMediaFromGallery( ( path ) =>
{
Debug.Log( "Media path: " + path );
if( path != null )
{
// Determine if user has picked an image, video or neither of these
switch( NativeGallery.GetMediaTypeOfFile( path ) )
{
case NativeGallery.MediaType.Image: Debug.Log( "Picked image" ); break;
case NativeGallery.MediaType.Video: Debug.Log( "Picked video" ); break;
default: Debug.Log( "Probably picked something else" ); break;
}
}
}, NativeGallery.MediaType.Image | NativeGallery.MediaType.Video, "Select an image or video" );
Debug.Log( "Permission result: " + permission );
}
}