Fix crash when text is empty (#483)

.github/stale.yml

@@ -1,5 +1,5 @@
-daysUntilStale: 7
-daysUntilClose: 7
+daysUntilStale: 5
+daysUntilClose: 3
 onlyLabels:
   - awaiting user input
 staleLabel: given up

.github/workflows/CD.yml

@@ -12,8 +12,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
           
-      - name: Setup fastlane
-        run: brew install fastlane
+      - name: Setup Environment
+        run: |
+          brew install fastlane
+          brew install cocoapods
             
       - name: Publish release
         id: publish_release
@@ -39,19 +41,10 @@ jobs:
         env:
           COCOAPODS_TRUNK_TOKEN: ${{ secrets.COCOAPODS_TRUNK_TOKEN }}
         run: |
-          gem install cocoapods
           set -eo pipefail
           pod lib lint --allow-warnings
           pod trunk push --allow-warnings    
 
-      - name: Communicate on PR released
-        uses: unsplash/comment-on-pr@master
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          msg: |
-            Congratulations! 🎉 This was released as part of [SkeletonView ${{ steps.publish_release.outputs.tag_name }}](${{ steps.publish_release.outputs.html_url }}) 🚀  
-
       - name: Tweet the release
         uses: ethomson/send-tweet-action@v1
         with:

SkeletonView.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "SkeletonView"
-  s.version      = "1.27.0"
+  s.version      = "1.29.1"
   s.summary      = "An elegant way to show users that something is happening and also prepare them to which contents he is waiting"
   s.description  = <<-DESC
   Today almost all apps have async processes, as API requests, long runing processes, etc. And while the processes are working, usually developers place a loading view to show users that something is going on.

SkeletonViewCore/Sources/API/Models/SkeletonGradient.swift

@@ -29,4 +29,8 @@ public struct SkeletonGradient {
         }
     }
     
+    public init(colors: [UIColor]) {
+        self.gradientColors = colors
+    }
+    
 }

SkeletonViewCore/Sources/Internal/SkeletonExtensions/SkeletonTextNode.swift

@@ -106,9 +106,11 @@ extension UILabel: SkeletonTextNode {
     }
     
     var fontLineHeight: CGFloat? {
-        if let attributes = attributedText?.attributes(at: 0, effectiveRange: nil),
-           let fontAttribute = attributes.first(where: { $0.key == .font }) {
-            return fontAttribute.value as? CGFloat ?? font.lineHeight
+        if let attributedText = attributedText,
+           attributedText.length > 0 {
+            let attributes = attributedText.attributes(at: 0, effectiveRange: nil)
+            let fontAttribute = attributes.first(where: { $0.key == .font })
+            return fontAttribute?.value as? CGFloat ?? font.lineHeight
         } else {
             return font.lineHeight
         }
@@ -179,9 +181,11 @@ extension UITextView: SkeletonTextNode {
     }
     
     var fontLineHeight: CGFloat? {
-        if let attributes = attributedText?.attributes(at: 0, effectiveRange: nil),
-           let fontAttribute = attributes.first(where: { $0.key == .font }) {
-            return fontAttribute.value as? CGFloat ?? font?.lineHeight
+        if let attributedText = attributedText,
+           attributedText.length > 0 {
+            let attributes = attributedText.attributes(at: 0, effectiveRange: nil)
+            let fontAttribute = attributes.first(where: { $0.key == .font })
+            return fontAttribute?.value as? CGFloat ?? font?.lineHeight
         } else {
             return font?.lineHeight
         }

SkeletonViewCore/Sources/Internal/UIKitExtensions/CALayer+Extensions.swift

@@ -78,7 +78,7 @@ extension CALayer {
         insertSublayer(sublayer.contentLayer, at: index)
         switch transition {
         case .none:
-            completion?()
+            DispatchQueue.main.async { completion?() }
         case .crossDissolve(let duration):
             sublayer.contentLayer.setOpacity(from: 0, to: 1, duration: duration, completion: completion)
         }