update swift version 4.0

InteractivePlayerView.podspec

@@ -1,12 +1,12 @@
 Pod::Spec.new do |s|
   s.name         = 'InteractivePlayerView'
-  s.version      = '2.0'
+  s.version      = '3.0'
   s.license      = { :type => 'MIT' }
   s.homepage     = 'https://github.com/AhmettKeskin/InteractivePlayerView'
   s.authors      = { 'Ahmet Keskin' => '[email protected]' }
   s.social_media_url = 'https://twitter.com/_Ahmettkeskin'
   s.summary      = 'Custom music player view iOS'
-  s.ios.deployment_target = '8.0'
+  s.ios.deployment_target = '9.0'
   s.source       = { :git => 'https://github.com/AhmettKeskin/InteractivePlayerView.git', :tag => s.version }
   s.resources = "ipv_source/*.{xib}"
   s.source_files = 'ipv_source/*.{swift}'

InteractivePlayerView.xcodeproj/project.pbxproj

@@ -381,7 +381,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "co.mobiwise.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -395,7 +395,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "co.mobiwise.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};

ipv_source/InteractivePlayerView.swift

@@ -358,8 +358,8 @@ class InteractivePlayerView : UIView {
     private func addCirle(arcRadius: CGFloat, capRadius: CGFloat, color: UIColor, strokeStart : CGFloat, strokeEnd : CGFloat) {
 
         let centerPoint = CGPoint(x: self.bounds.midX ,y: self.bounds.midY)
-        let startAngle = CGFloat(M_PI_2)
-        let endAngle = CGFloat(M_PI * 2 + M_PI_2)
+        let startAngle = CGFloat(Double.pi/2)
+        let endAngle = CGFloat(Double.pi * 2 + Double.pi/2)
 
         let path = UIBezierPath(arcCenter:centerPoint, radius: frame.width/2+5, startAngle:startAngle, endAngle:endAngle, clockwise: true).cgPath
 
@@ -381,8 +381,8 @@ class InteractivePlayerView : UIView {
 
     private func createProgressCircle(){
         let centerPoint = CGPoint(x: self.bounds.midX ,y: self.bounds.midY)
-        let startAngle = CGFloat(M_PI_2)
-        let endAngle = CGFloat(M_PI * 2 + M_PI_2)
+        let startAngle = CGFloat(Double.pi/2)
+        let endAngle = CGFloat(Double.pi * 2 + Double.pi/2)
 
         // Use UIBezierPath as an easy way to create the CGPath for the layer.
         // The path should be the entire circle.
@@ -455,7 +455,7 @@ class InteractivePlayerView : UIView {
 
     }
 
-    func updateTime(){
+    @objc func updateTime(){
 
         self.duration += 0.1
         let totalDuration = Int(self.duration)
@@ -472,7 +472,7 @@ class InteractivePlayerView : UIView {
     }
 
     /* Start timer and animation */
-    func start(){
+    @objc func start(){
         self.startTimer()
     }
 
@@ -494,7 +494,7 @@ class InteractivePlayerView : UIView {
         self.addGestureRecognizer(gesture)
     }
 
-    func handlePanGesture(gesture:UIPanGestureRecognizer){
+    @objc func handlePanGesture(gesture:UIPanGestureRecognizer){
         if(!self.panEnabled){
             return;
         }