Adds PHPickerController support for iOS 14 or later

Updates picker to use new PHPickerController for both single and multi media (image/video) picks (iOS 14 and above only).

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 2.0.1
+iOS: Updates picker to use new PHPickerController for both single and multi media (image/video) picks (iOS 14 and above only).
+
 ## 2.0.0
 **Breaking Changes**
 - Unifies all platforms (IO, Web and Desktop) in a single plugin (file_picker) that can be used seamlessly across all. Both [file_picker_interface](https://pub.dev/packages/file_picker_platform_interface) and [file_picker_web](https://pub.dev/packages/file_picker_web) are no longer mantained from now on.

ios/Classes/FilePickerPlugin.h

@@ -2,7 +2,8 @@
 #import <UIKit/UIKit.h>
 #import <MediaPlayer/MediaPlayer.h>
 #import <Photos/Photos.h>
+#import <PhotosUI/PHPicker.h>
 #import <MobileCoreServices/MobileCoreServices.h>
 
-@interface FilePickerPlugin : NSObject<FlutterPlugin, FlutterStreamHandler, UIDocumentPickerDelegate, UITabBarDelegate, UINavigationControllerDelegate, UIImagePickerControllerDelegate>
+@interface FilePickerPlugin : NSObject<FlutterPlugin, FlutterStreamHandler, UIDocumentPickerDelegate, UITabBarDelegate, UINavigationControllerDelegate, UIImagePickerControllerDelegate, PHPickerViewControllerDelegate>
 @end

ios/Classes/FilePickerPlugin.m

@@ -4,7 +4,7 @@
 
 @import DKImagePickerController;
 
-@interface FilePickerPlugin() <UIImagePickerControllerDelegate, MPMediaPickerControllerDelegate, DKImageAssetExporterObserver>
+@interface FilePickerPlugin() <UIImagePickerControllerDelegate, MPMediaPickerControllerDelegate, DKImageAssetExporterObserver, PHPickerViewControllerDelegate>
 @property (nonatomic) FlutterResult result;
 @property (nonatomic) FlutterEventSink eventSink;
 @property (nonatomic) UIViewController *viewController;
@@ -128,6 +128,20 @@
 
 - (void) resolvePickMedia:(MediaType)type withMultiPick:(BOOL)multiPick withCompressionAllowed:(BOOL)allowCompression  {
  
+    if (@available(iOS 14, *)) {
+        PHPickerConfiguration *config = [[PHPickerConfiguration alloc] init];
+        config.filter = type == IMAGE ? [PHPickerFilter imagesFilter] : type == VIDEO ? [PHPickerFilter videosFilter] : [PHPickerFilter anyFilterMatchingSubfilters:@[[PHPickerFilter videosFilter], [PHPickerFilter imagesFilter]]];
+        
+        if(multiPick) {
+            config.selectionLimit = 0;
+        }
+        
+        PHPickerViewController *pickerViewController = [[PHPickerViewController alloc] initWithConfiguration:config];
+        pickerViewController.delegate = self;
+        [self.viewController presentViewController:pickerViewController animated:YES completion:nil];
+        return;
+    }
+    
     if(multiPick) {
         [self resolveMultiPickFromGallery:type withCompressionAllowed:allowCompression];
         return;
@@ -162,6 +176,8 @@
     }
     
     [self.viewController presentViewController:self.galleryPickerController animated:YES completion:nil];
+    
+    
 }
 
 - (void) resolveMultiPickFromGallery:(MediaType)type withCompressionAllowed:(BOOL)allowCompression {
@@ -330,6 +346,37 @@ didPickDocumentsAtURLs:(NSArray<NSURL *> *)urls{
     [self handleResult: pickedVideoUrl != nil ? pickedVideoUrl : pickedImageUrl];
 }
 
+-(void)picker:(PHPickerViewController *)picker didFinishPicking:(NSArray<PHPickerResult *> *)results API_AVAILABLE(ios(14)){
+    
+    Log(@"Picker:%@ didFinishPicking:%@", picker, results);
+    
+    [picker dismissViewControllerAnimated:YES completion:nil];
+    
+    if(results.count == 0) {
+        Log(@"FilePicker canceled");
+        _result(nil);
+        _result = nil;
+        return;
+    }
+    
+    NSMutableArray<NSURL *> * urls = [[NSMutableArray alloc] initWithCapacity:results.count];
+    
+    dispatch_group_t group = dispatch_group_create();
+    
+    for (PHPickerResult *result in results) {
+        dispatch_group_enter(group);
+        [result.itemProvider loadFileRepresentationForTypeIdentifier: @"public.item"
+                                                   completionHandler:^(NSURL * url, NSError * error) {
+            [urls addObject:url];
+            dispatch_group_leave(group);
+        }];
+    }
+    
+    dispatch_group_notify(group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),^{
+        [self handleResult:urls];
+    });
+}
+
 
 // AudioPicker delegate
 - (void)mediaPicker: (MPMediaPickerController *)mediaPicker didPickMediaItems:(MPMediaItemCollection *)mediaItemCollection

pubspec.yaml

@@ -1,7 +1,7 @@
 name: file_picker
 description: A package that allows you to use a native file explorer to pick single or multiple absolute file paths, with extension filtering support.
 homepage: https://github.com/miguelpruivo/plugins_flutter_file_picker
-version: 2.0.0
+version: 2.0.1
 
 dependencies:
   flutter: