Support Swift Package Manager

.gitignore

@@ -33,3 +33,9 @@ Pods/
 # Add this line if you want to avoid checking in source code from Carthage dependencies.
 Carthage/Checkouts
 Carthage/Build
+
+# Swift Package Manager
+#
+.build/
+.swiftpm/
+Package.resolved

GCProgressSample/GradientCircularProgress/Progress/Elements/Background.swift

@@ -6,6 +6,7 @@
 //  Copyright (c) 2015年 keygx. All rights reserved.
 //
 
+import UIKit
 
 struct Background {
 

GCProgressSample/GradientCircularProgress/Progress/Property.swift

@@ -6,6 +6,8 @@
 //  Copyright (c) 2015年 keygx. All rights reserved.
 //
 
+import UIKit
+
 public protocol StyleProperty {
     // Progress Size
     var progressSize: CGFloat { get set }

Package.swift

@@ -0,0 +1,24 @@
+// swift-tools-version:5.1
+
+import PackageDescription
+
+let package = Package(
+    name: "GradientCircularProgress",
+    platforms: [
+        .iOS(.v8)
+    ],
+    products: [
+        .library(
+            name: "GradientCircularProgress",
+            targets: ["GradientCircularProgress"]
+        )
+    ],
+    targets: [
+        .target(
+            name: "GradientCircularProgress",
+            path: "source",
+            exclude: ["GradientCircularProgress.h"]
+        )
+    ],
+    swiftLanguageVersions: [.v5]
+)

README.md

@@ -35,6 +35,22 @@ github "keygx/GradientCircularProgress"
 pod 'GradientCircularProgress', :git => 'https://github.com/keygx/GradientCircularProgress'
 ```
 
+### Swift Package Manager
+
+In Xcode, select `File > Swift Packages > Add Package Dependency...` and enter the repository URL:
+
+```
+https://github.com/keygx/GradientCircularProgress.git
+```
+
+Or add it as a dependency in your `Package.swift`:
+
+```swift
+dependencies: [
+    .package(url: "https://github.com/keygx/GradientCircularProgress.git", from: "3.14.0")
+]
+```
+
 ### Swift versions support
 
 - Swift 5.1, tag "swift5.1"

source/Progress/Elements/Background.swift

@@ -6,6 +6,7 @@
 //  Copyright (c) 2015年 keygx. All rights reserved.
 //
 
+import UIKit
 
 struct Background {
 

source/Progress/Property.swift

@@ -6,6 +6,8 @@
 //  Copyright (c) 2015年 keygx. All rights reserved.
 //
 
+import UIKit
+
 public protocol StyleProperty {
     // Progress Size
     var progressSize: CGFloat { get set }