Add extension of UIlabel for adding line spacing with the method of n…

CHANGELOG.md

@@ -3,12 +3,15 @@ All notable changes to this project will be documented in this file.
 
 ## Unreleased
 
+
 1. **Double**
    - `**?(lhs:Double, rhs:Double)` in [[PR]](https://github.com/goktugyil/EZSwiftExtensions/pull/443) by *Khalian*
-
 2. **UILabel**
    - `public convenience init(font: UIFont, color: UIColor, alignment: NSTextAlignment)` in [[PR]](https://github.com/goktugyil/EZSwiftExtensions/pull/441) by *icefall*
 
+3.  **UILabelExtensions**
+   - `setLineSpacing(lineSpacing : CGFloat)` in [[PR]](https://github.com/goktugyil/EZSwiftExtensions/pull/438) by *osama10*
+
 ## [Release 1.10]
 
 ### New platform added. 
@@ -60,7 +63,7 @@ All notable changes to this project will be documented in this file.
    - `validateEmail()` in [[PR]](https://github.com/goktugyil/EZSwiftExtensions/pull/429) by *Vic-L*
    - `validateDigits()` in [[PR]](https://github.com/goktugyil/EZSwiftExtensions/pull/429) by *Vic-L*
 
-### Deprecated/Renamed extensions
+ ### Deprecated/Renamed extensions
 1. **UIViewController**
    - `public func hideKeyboardWhenTappedAround(cancelTouches: Bool = false)` in [[PR]](https://github.com/goktugyil/EZSwiftExtensions/pull/395) by *lfarah*
 

EZSwiftExtensionsTests/UILabelTests.swift

@@ -5,57 +5,72 @@
 //  Created by Goktug Yilmaz on 8/25/16.
 //  Copyright © 2016 Goktug Yilmaz. All rights reserved.
 //
-
 #if os(iOS) || os(tvOS)
-
-import XCTest
-@testable import EZSwiftExtensions
-class UILabelTests: XCTestCase {
-
-    func testInit() {
-
-        let label = UILabel(x: 0, y: 0, w: 200, h: 50)
-        let expected = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
-        let label2 = UILabel(x: 0, y: 0, w: 200, h: 50, fontSize: 20)
+
+    import XCTest
+    @testable import EZSwiftExtensions
+    class UILabelTests: XCTestCase {
 
-        let label3 = UILabel(font: UIFont.systemFont(ofSize: 32), color: .red, alignment: .left)
+        func testInit() {
+
+            let label = UILabel(x: 0, y: 0, w: 200, h: 50)
+            let expected = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
+            let label2 = UILabel(x: 0, y: 0, w: 200, h: 50, fontSize: 20)
+
+            let label3 = UILabel(font: UIFont.systemFont(ofSize: 32), color: .red, alignment: .left)
+
+            XCTAssertEqual(label.frame, expected.frame)
+            XCTAssertEqual(label2.font.pointSize, 20)
+            XCTAssertEqual(label.font.pointSize, 17)
+
+            XCTAssertEqual(label3.font, UIFont.systemFont(ofSize: 32))
+            XCTAssertEqual(label3.textColor, .red)
+            XCTAssertEqual(label3.textAlignment, .left)
+        }
 
-        XCTAssertEqual(label.frame, expected.frame)
-        XCTAssertEqual(label2.font.pointSize, 20)
-        XCTAssertEqual(label.font.pointSize, 17)
+        func testSet() {
+
+            let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
+            label.set(text: "EZSwiftExtensions✅", duration: 1)
+            XCTAssertEqual(label.text, "EZSwiftExtensions✅")
+
+            label.text = ""
+            label.set(text: "EZSwiftExtensions🚀", duration: 0)
+            XCTAssertEqual(label.text, "EZSwiftExtensions🚀")
+
+            label.text = ""
+            label.set(text: "EZSwiftExtensions❤️", duration: 1)
+            XCTAssertEqual(label.text, "EZSwiftExtensions❤️")
+        }
 
-        XCTAssertEqual(label3.font, UIFont.systemFont(ofSize: 32))
-        XCTAssertEqual(label3.textColor, .red)
-        XCTAssertEqual(label3.textAlignment, .left)
-    }
-
-    func testSet() {
+        func testSetLineSpacing(){
+            let textForTesting = "I am testing test Set line spacing method"
+            var paragraphStyle : NSMutableParagraphStyle?
+
+            let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
+            label.text = textForTesting
+            label.setLineSpacing(lineSpacing: 1.5)
+
+            label.attributedText?.enumerateAttribute(NSParagraphStyleAttributeName , in: NSMakeRange(0, (label.attributedText?.length)!), options: [.longestEffectiveRangeNotRequired]) { value, range, isStop in
+                if let value = value {
+                    paragraphStyle =  value as! NSMutableParagraphStyle
+                }
+            }
+            XCTAssertEqual(paragraphStyle?.lineHeightMultiple, 1.5)
+        }
 
-        let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
-        label.set(text: "EZSwiftExtensions✅", duration: 1)
-        XCTAssertEqual(label.text, "EZSwiftExtensions✅")
+        var waitExpectation: XCTestExpectation?
 
-        label.text = ""
-        label.set(text: "EZSwiftExtensions🚀", duration: 0)
-        XCTAssertEqual(label.text, "EZSwiftExtensions🚀")
+        func wait(duration: TimeInterval) {
+            waitExpectation = expectation(description: "wait")
+            Timer.scheduledTimer(timeInterval: duration, target: self,
+                                 selector: #selector(UILabelTests.onTimer), userInfo: nil, repeats: false)
+            waitForExpectations(timeout: duration + 3, handler: nil)
+        }
 
-        label.text = ""
-        label.set(text: "EZSwiftExtensions❤️", duration: 1)
-        XCTAssertEqual(label.text, "EZSwiftExtensions❤️")
+        func onTimer() {
+            waitExpectation?.fulfill()
+        }
     }
-
-    var waitExpectation: XCTestExpectation?
 
-    func wait(duration: TimeInterval) {
-        waitExpectation = expectation(description: "wait")
-        Timer.scheduledTimer(timeInterval: duration, target: self,
-                                               selector: #selector(UILabelTests.onTimer), userInfo: nil, repeats: false)
-        waitForExpectations(timeout: duration + 3, handler: nil)
-    }
-
-    func onTimer() {
-        waitExpectation?.fulfill()
-    }
-}
-
 #endif

Sources/UILabelExtensions.swift

@@ -69,6 +69,19 @@ extension UILabel {
             self.text = _text
         }, completion: nil)
     }
+
+    // Set lineSpacing for UILabel
+    public func setLineSpacing(lineSpacing: CGFloat) {
+        let paragraphStyle = NSMutableParagraphStyle()
+        paragraphStyle.lineSpacing = 1.0
+        paragraphStyle.lineHeightMultiple = lineSpacing
+        paragraphStyle.alignment = self.textAlignment
+
+        let attrString = NSMutableAttributedString(string: self.text!)
+        attrString.addAttribute(NSFontAttributeName, value: self.font, range: NSMakeRange(0, attrString.length))
+        attrString.addAttribute(NSParagraphStyleAttributeName, value:paragraphStyle, range:NSMakeRange(0, attrString.length))
+        self.attributedText = attrString
+    }
 }
 
 #endif