Addresses onFileLoading status callback on iOS 14+ (#577)

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 2.1.6
+- Addresses an issue on iOS 14 and later where events `onFileLoading` events weren't being provided ([#577](https://github.com/miguelpruivo/flutter_file_picker/issues/577)). 
+
 ## 2.1.5+1
 - Web: Updates `size` property from `PlatformFile` to be in bytes instead of kb;
 - Applies minor refactor to example app. Thank you @Abhishek01039;

example/ios/Flutter/.last_build_id

@@ -1 +1 @@
-32b17685cd2c55cd4f786d731516419d
+d14c55479469c81e352606cc6bcd0dc0

example/lib/src/file_picker_demo.dart

@@ -1,7 +1,6 @@
-import 'package:flutter/material.dart';
-
-import 'package:flutter/services.dart';
 import 'package:file_picker/file_picker.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 
 class FilePickerDemo extends StatefulWidget {
   @override

ios/Classes/FilePickerPlugin.m

@@ -387,6 +387,10 @@ didPickDocumentsAtURLs:(NSArray<NSURL *> *)urls{
     
     self.group = dispatch_group_create();
     
+    if(self->_eventSink != nil) {
+        self->_eventSink([NSNumber numberWithBool:YES]);
+    }
+    
     for (PHPickerResult *result in results) {
         dispatch_group_enter(_group);
         [result.itemProvider loadFileRepresentationForTypeIdentifier:@"public.item" completionHandler:^(NSURL * _Nullable url, NSError * _Nullable error) {
@@ -424,6 +428,9 @@ didPickDocumentsAtURLs:(NSArray<NSURL *> *)urls{
     
     dispatch_group_notify(_group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),^{
         self->_group = nil;
+        if(self->_eventSink != nil) {
+            self->_eventSink([NSNumber numberWithBool:NO]);
+        }
         [self handleResult:urls];
     });
 }

lib/src/file_picker_result.dart

@@ -20,8 +20,10 @@ class FilePickerResult {
   ///
   /// Only available on IO. Throws `UnsupportedError` on Web.
   List<String> get paths => files
-      .map((file) =>
-          kIsWeb ? throw UnsupportedError('Unsupported on Web') : file.path)
+      .map((file) => kIsWeb
+          ? throw UnsupportedError(
+              'Picking paths is unsupported on Web. Please, use bytes property instead.')
+          : file.path)
       .toList();
 
   /// A `List<String>` containing all names from picked files with its extensions.

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: 2.1.5+1
+version: 2.1.6
 
 dependencies:
   flutter: