Refactor: extract ios core like android

np_ios_core/.gitignore

@@ -0,0 +1,36 @@
+# macOS
+.DS_Store
+
+# Xcode
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata/
+*.xccheckout
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+
+# Bundler
+.bundle
+
+# Add this line if you want to avoid checking in source code from Carthage dependencies.
+# Carthage/Checkouts
+
+Carthage/Build
+
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control
+# 
+# Note: if you ignore the Pods directory, make sure to uncomment
+# `pod install` in .travis.yml
+#
+# Pods/

np_ios_core/NpIosCore.podspec

@@ -0,0 +1,26 @@
+Pod::Spec.new do |s|
+  s.name             = 'NpIosCore'
+  s.version          = '0.1.0'
+  s.summary          = 'A short description of NpIosCore.'
+  s.description      = <<-DESC
+TODO: Add long description of the pod here.
+                       DESC
+  s.homepage         = 'http://example.com'
+  s.license          = { :type => 'GPLv3' }
+  s.author           = { 'Your Company' => 'email@example.com' }
+  s.source           = { :path => '.' }
+
+  s.ios.deployment_target = '12.0'
+
+  s.source_files = 'NpIosCore/Classes/**/*'
+  
+  # s.resource_bundles = {
+  #   'NpIosCore' => ['NpIosCore/Assets/*.png']
+  # }
+
+  # s.public_header_files = 'Pod/Classes/**/*.h'
+  # s.frameworks = 'UIKit', 'MapKit'
+  # s.dependency 'AFNetworking', '~> 2.3'
+  s.dependency 'Flutter'
+  s.dependency 'Logging'
+end

np_ios_core/NpIosCore/Classes/Error.swift

@@ -0,0 +1,22 @@
+import Foundation
+
+public class AppError: Error {
+  public init(_ message: String? = nil, stackTrace: [String] = Thread.callStackSymbols) {
+    self.message_ = message
+    self.stackTrace = stackTrace.joined(separator: "\n")
+  }
+
+  public var description: String {
+    return "\(message_ ?? "") (throw: \(String(describing: self))\nStack trace:\n\(stackTrace)"
+  }
+
+  public var message: String {
+    return message_ == nil ? String(describing: self) : message_!
+  }
+
+  public let stackTrace: String
+  private let message_: String?
+}
+
+public class NilError: AppError {
+}

np_ios_core/NpIosCore/Classes/Util.swift

@@ -0,0 +1,14 @@
+import Foundation
+
+public extension Optional {
+  func unwrap(
+    _ errorBuilder: (() -> Error)? = nil,
+    file: String = #fileID,
+    line: Int = #line
+  ) throws -> Wrapped {
+    guard let value = self else {
+      throw errorBuilder?() ?? NilError("\(type(of: self)) is nil in \(file):\(line)")
+    }
+    return value
+  }
+}

np_platform_lock/ios/Classes/LockChannelHandler.swift

@@ -1,5 +1,6 @@
 import Flutter
 import Foundation
+import NpIosCore
 
 class LockChannelHandler {
   func onMethodCall(call: FlutterMethodCall, result: FlutterResult) {

np_platform_lock/ios/Classes/Util.swift

@@ -1,35 +0,0 @@
-import Foundation
-
-class AppError: Error {
-  init(_ message: String? = nil, stackTrace: [String] = Thread.callStackSymbols) {
-    self.message_ = message
-    self.stackTrace = stackTrace.joined(separator: "\n")
-  }
-
-  var description: String {
-    return "\(message_ ?? "") (throw: \(String(describing: self))\nStack trace:\n\(stackTrace)"
-  }
-
-  var message: String {
-    return message_ == nil ? String(describing: self) : message_!
-  }
-
-  let stackTrace: String
-  private let message_: String?
-}
-
-class NilError: AppError {
-}
-
-extension Optional {
-  func unwrap(
-    _ errorBuilder: (() -> Error)? = nil,
-    file: String = #fileID,
-    line: Int = #line
-  ) throws -> Wrapped {
-    guard let value = self else {
-      throw errorBuilder?() ?? NilError("\(type(of: self)) is nil in \(file):\(line)")
-    }
-    return value
-  }
-}

np_platform_lock/ios/np_platform_lock.podspec

@@ -10,11 +10,12 @@ Pod::Spec.new do |s|
 A new Flutter plugin project.
                        DESC
   s.homepage         = 'http://example.com'
-  s.license          = { :file => '../LICENSE' }
+  s.license          = { :type => 'GPLv3' }
   s.author           = { 'Your Company' => 'email@example.com' }
   s.source           = { :path => '.' }
   s.source_files = 'Classes/**/*'
   s.dependency 'Flutter'
+  s.dependency 'NpIosCore'
   s.platform = :ios, '9.0'
 
   # Flutter.framework does not contain a i386 slice.