Merge branch 'master' of github.com:Ramotion/animated-tab-bar

Ramotion · Jun 13, 2019 · 2f54635 · 2f54635
2 parents d7d08b2 + 3fc716a
commit 2f54635
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Showing 2 changed files with 25 additions and 6 deletions.
diff --git a/RAMAnimatedTabBarController/BottomLine/RAMAnimatedTabBarController+BottomLine.swift b/RAMAnimatedTabBarController/BottomLine/RAMAnimatedTabBarController+BottomLine.swift
@@ -25,19 +25,17 @@ extension RAMAnimatedTabBarController {
 
     func createBottomLine() {
         guard let currentItem = (containers.filter { $0.value.tag == 0 }).first?.value else { return }
-
-        let lineHeight: CGFloat = 2
 
         let container = UIView()
         container.backgroundColor = .clear
         container.translatesAutoresizingMaskIntoConstraints = false
-
+        
         view.addSubview(container)
 
         container.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
         container.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
         container.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
-        container.heightAnchor.constraint(equalToConstant: lineHeight).isActive = true
+        container.heightAnchor.constraint(equalToConstant: bottomLineHeight).isActive = true
 
 
         let line = UIView()
@@ -48,10 +46,12 @@ extension RAMAnimatedTabBarController {
 
         lineLeadingConstraint = bottomLine?.leadingAnchor.constraint(equalTo: currentItem.leadingAnchor)
         lineLeadingConstraint?.isActive = true
-
+
+        lineHeightConstraint = bottomLine?.heightAnchor.constraint(equalToConstant: bottomLineHeight)
+        lineHeightConstraint?.isActive = true
+
         // add constraints
         bottomLine?.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
-        bottomLine?.heightAnchor.constraint(equalToConstant: lineHeight).isActive = true
         bottomLine?.widthAnchor.constraint(equalTo: currentItem.widthAnchor).isActive = true
     }
 
@@ -79,4 +79,11 @@ extension RAMAnimatedTabBarController {
             self.bottomLine?.superview?.layoutIfNeeded()
         }
     }
+
+    func updateBottomLineHeight(to height: CGFloat) {
+        lineHeightConstraint?.isActive = false
+
+        lineHeightConstraint = bottomLine?.heightAnchor.constraint(equalToConstant: height)
+        lineHeightConstraint?.isActive = true
+    }
 }
diff --git a/RAMAnimatedTabBarController/RAMAnimatedTabBarController.swift b/RAMAnimatedTabBarController/RAMAnimatedTabBarController.swift
@@ -229,6 +229,17 @@ open class RAMAnimatedTabBarController: UITabBarController {
         }
     }
 
+    /**
+     Bottom line height
+     **/
+    open var bottomLineHeight: CGFloat = 2 {
+        didSet {
+            if bottomLineHeight > 0 {
+                updateBottomLineHeight(to: bottomLineHeight)
+            }
+        }
+    }
+
     /**
      Bottom line time of animations duration
      **/
@@ -253,6 +264,7 @@ open class RAMAnimatedTabBarController: UITabBarController {
         }
     }
 
+    var lineHeightConstraint: NSLayoutConstraint?
     var lineLeadingConstraint: NSLayoutConstraint?
     var bottomLine: UIView?
     var arrBottomAnchor:[NSLayoutConstraint] = []