Use a custom arrow image

Example/PullToRefreshSwift.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		590300841F1BE23A00A0894A /* custompulltorefresharrow.png in Resources */ = {isa = PBXBuildFile; fileRef = 590300831F1BE23A00A0894A /* custompulltorefresharrow.png */; };
 		8C37CA2B1A3E815D00B3EFD4 /* pulltorefresharrow.png in Resources */ = {isa = PBXBuildFile; fileRef = 8C37CA271A3E815D00B3EFD4 /* pulltorefresharrow.png */; };
 		8C37CA2C1A3E815D00B3EFD4 /* PullToRefreshOption.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8C37CA281A3E815D00B3EFD4 /* PullToRefreshOption.swift */; };
 		8C37CA2D1A3E815D00B3EFD4 /* PullToRefreshView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8C37CA291A3E815D00B3EFD4 /* PullToRefreshView.swift */; };
@@ -32,6 +33,7 @@
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXFileReference section */
+		590300831F1BE23A00A0894A /* custompulltorefresharrow.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = custompulltorefresharrow.png; sourceTree = "<group>"; };
 		8C37CA271A3E815D00B3EFD4 /* pulltorefresharrow.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; name = pulltorefresharrow.png; path = ../../Source/pulltorefresharrow.png; sourceTree = "<group>"; };
 		8C37CA281A3E815D00B3EFD4 /* PullToRefreshOption.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PullToRefreshOption.swift; sourceTree = "<group>"; };
 		8C37CA291A3E815D00B3EFD4 /* PullToRefreshView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PullToRefreshView.swift; sourceTree = "<group>"; };
@@ -109,6 +111,7 @@
 				C53BEC491A357BCA008A4302 /* Images.xcassets */,
 				C53BEC4B1A357BCA008A4302 /* LaunchScreen.xib */,
 				C53BEC411A357BCA008A4302 /* PullToRefreshSwift.xcdatamodeld */,
+				590300831F1BE23A00A0894A /* custompulltorefresharrow.png */,
 				C53BEC3D1A357BCA008A4302 /* Supporting Files */,
 			);
 			path = PullToRefreshSwift;
@@ -233,6 +236,7 @@
 			files = (
 				C53BEC481A357BCA008A4302 /* Main.storyboard in Resources */,
 				C53BEC4D1A357BCA008A4302 /* LaunchScreen.xib in Resources */,
+				590300841F1BE23A00A0894A /* custompulltorefresharrow.png in Resources */,
 				C53BEC4A1A357BCA008A4302 /* Images.xcassets in Resources */,
 				8C37CA2B1A3E815D00B3EFD4 /* pulltorefresharrow.png in Resources */,
 			);

Example/PullToRefreshSwift/ViewController.swift

@@ -21,17 +21,17 @@ class ViewController: UIViewController, UITableViewDataSource, UITableViewDelega
 
         self.tableView.separatorColor = UIColor(red: 224/255, green: 224/255, blue: 224/255, alpha: 1.0)
 
-        self.tableView.addPullRefresh { [weak self] in
+        let pullOptions = PullToRefreshOption(arrowImage: UIImage(named: "custompulltorefresharrow"))
+        self.tableView.addPullRefresh(options: pullOptions) { [weak self] in
             // some code
             sleep(1)
             self?.texts.shuffle()
             self?.tableView.reloadData()
             self?.tableView.stopPullRefreshEver()
         }
 
-        var options = PullToRefreshOption()
-        options.indicatorColor = .blue
-        self.tableView.addPushRefresh(options: options) { [weak self] in
+        let pushOptions = PullToRefreshOption(indicatorColor: .blue)
+        self.tableView.addPushRefresh(options: pushOptions) { [weak self] in
             // some code
             sleep(1)
             self?.texts.shuffle()

Source/PullToRefreshOption.swift

@@ -11,21 +11,23 @@ struct PullToRefreshConst {
     static let pushTag = 811
     static let alpha = true
     static let height: CGFloat = 80
-    static let imageName: String = "pulltorefresharrow.png"
+    static let defaultImageName: String = "pulltorefresharrow.png"
     static let animationDuration: Double = 0.5
     static let fixedTop = true // PullToRefreshView fixed Top
 }
 
-public struct PullToRefreshOption {
-    public var backgroundColor: UIColor
-    public var indicatorColor: UIColor
-    public var autoStopTime: Double // 0 is not auto stop
-    public var fixedSectionHeader: Bool // Update the content inset for fixed section headers
+public class PullToRefreshOption: NSObject {
+    private(set) var backgroundColor: UIColor
+    private(set) var indicatorColor: UIColor
+    private(set) var autoStopTime: Double // 0 is not auto stop
+    private(set) var fixedSectionHeader: Bool // Update the content inset for fixed section headers
+    private(set) var arrowImage: UIImage?
 
-    public init(backgroundColor: UIColor = .clear, indicatorColor: UIColor = .gray, autoStopTime: Double = 0, fixedSectionHeader: Bool = false) {
+    public init(backgroundColor: UIColor = .clear, indicatorColor: UIColor = .gray, autoStopTime: Double = 0, fixedSectionHeader: Bool = false, arrowImage: UIImage? = nil) {
         self.backgroundColor = backgroundColor
         self.indicatorColor = indicatorColor
         self.autoStopTime = autoStopTime
         self.fixedSectionHeader = fixedSectionHeader
+        self.arrowImage = arrowImage
     }
 }

Source/PullToRefreshView.swift

@@ -89,8 +89,11 @@ open class PullToRefreshView: UIView {
         self.arrow = UIImageView(frame: CGRect(x: 0, y: 0, width: 30, height: 30))
         self.arrow.autoresizingMask = [.flexibleLeftMargin, .flexibleRightMargin]
 
-        self.arrow.image = UIImage(named: PullToRefreshConst.imageName, in: Bundle(for: type(of: self)), compatibleWith: nil)
-
+        if let arrowImage = options.arrowImage {
+            self.arrow.image = arrowImage
+        } else {
+            self.arrow.image = UIImage(named: PullToRefreshConst.defaultImageName, in: Bundle(for: type(of: self)), compatibleWith: nil)
+        }
 
         self.indicator = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.gray)
         self.indicator.bounds = self.arrow.bounds