Reimplement file picker on macOS with method channels

.gitignore

@@ -34,4 +34,3 @@ example/ios/Flutter/flutter_export_environment.sh
 example/.flutter-plugins-dependencies
 file_picker/example/.flutter-plugins-dependencies
 file_picker/example/ios/Flutter/flutter_export_environment.sh
-example/macos

CHANGELOG.md

@@ -1,14 +1,18 @@
+## 8.2.0
+### Desktop (macOS)
+- Reimplement macOS file picker using method channels (fixes [#1492](https://github.com/miguelpruivo/flutter_file_picker/issues/1492), [#1445](https://github.com/miguelpruivo/flutter_file_picker/issues/1445), [#1674](https://github.com/miguelpruivo/flutter_file_picker/issues/1674), [#1685](https://github.com/miguelpruivo/flutter_file_picker/issues/1685))
+
 ## 8.1.7
 ### iOS 
-Fix Image Picker to Handle Partial Failures Gracefully [#1554](https://github.com/miguelpruivo/flutter_file_picker/issues/1554)
+- Fix Image Picker to Handle Partial Failures Gracefully [#1554](https://github.com/miguelpruivo/flutter_file_picker/issues/1554)
 
 ## 8.1.6
 ### Android
-Fix [#1643](https://github.com/miguelpruivo/flutter_file_picker/issues/1643)
+- Fix Android compile error [#1643](https://github.com/miguelpruivo/flutter_file_picker/issues/1643)
 
 ## 8.1.5
 ### Android
-Fix [#872](https://github.com/miguelpruivo/flutter_file_picker/issues/872)
+- Fix [#872](https://github.com/miguelpruivo/flutter_file_picker/issues/872) by removing unnecessary external storage permission
 
 ## 8.1.4
 ### iOS

example/.gitignore

@@ -5,9 +5,11 @@
 *.swp
 .DS_Store
 .atom/
+.build/
 .buildlog/
 .history
 .svn/
+.swiftpm/
 migrate_working_dir/
 
 # IntelliJ related

example/macos/.gitignore

@@ -0,0 +1,8 @@
+# Flutter-related
+**/Flutter/ephemeral/
+**/Pods/
+
+# Xcode-related
+**/dgph
+**/xcuserdata/
+Flutter/GeneratedPluginRegistrant.*

example/macos/Flutter/Flutter-Debug.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "ephemeral/Flutter-Generated.xcconfig"

example/macos/Flutter/Flutter-Release.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "ephemeral/Flutter-Generated.xcconfig"

example/macos/Podfile

@@ -0,0 +1,43 @@
+platform :osx, '10.14'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'ephemeral', 'Flutter-Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure \"flutter pub get\" is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Flutter-Generated.xcconfig, then run \"flutter pub get\""
+end
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_macos_podfile_setup
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+
+  flutter_install_all_macos_pods File.dirname(File.realpath(__FILE__))
+  target 'RunnerTests' do
+    inherit! :search_paths
+  end
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_macos_build_settings(target)
+  end
+end