Eluss · November 6, 2016 13:28 · Nov 6, 2016
diff --git a/MoveAnchor.swift b/MoveAnchor.swift
@@ -0,0 +1,36 @@
+var buttonLeftConstraint: NSLayoutConstraint?
+
+func pureLayout() {
+    buttonLeftConstraint = animateButton.autoPinEdge(toSuperviewEdge: .left, withInset: 20)
+    animateButton.autoPinEdge(toSuperviewEdge: .top, withInset: 50)
+    animateButton.autoSetDimensions(to: CGSize(width: 100, height: 100))
+}
+
+func animate() {
+    UIView.animate(withDuration: 1) {
+        let random: Double = Double(arc4random_uniform(200))
+        self.buttonLeftConstraint?.constant = random
+        self.view.layoutIfNeeded()
+    }
+}
+
+///
+
+var buttonLeftConstraint: NSLayoutConstraint?
+
+func anchorLayout() {
+    animateButton.translatesAutoresizingMaskIntoConstraints = false
+    buttonLeftConstraint = animateButton.leftAnchor.constraint(lessThanOrEqualTo: view.leftAnchor, constant: 20)
+    buttonLeftConstraint?.isActive = true
+    animateButton.topAnchor.constraint(equalTo: view.topAnchor, constant: 50).isActive = true
+    animateButton.widthAnchor.constraint(equalToConstant: 100).isActive = true
+    animateButton.heightAnchor.constraint(equalToConstant: 100).isActive = true
+}
+
+func animate() {
+    UIView.animate(withDuration: 1) {
+        let random: CGFloat = CGFloat(arc4random_uniform(200))
+        self.buttonLeftConstraint?.constant = random
+        self.view.layoutIfNeeded()
+    }
+}