Update center button position for iPhone X

HsoiEnterprises · Sep 16, 2017 · 1f5b355 · 1f5b355
1 parent ca62d3f
commit 1f5b355
Showing 1 changed file with 13 additions and 4 deletions.
diff --git a/HELargeCenterTabBarController/HELargeCenterTabBarController.swift b/HELargeCenterTabBarController/HELargeCenterTabBarController.swift
@@ -145,10 +145,19 @@ class HELargeCenterTabBarController: UITabBarController {
         button.translatesAutoresizingMaskIntoConstraints = false
         tabBar.addSubview(button)
 
-        view.addConstraint(NSLayoutConstraint(item: button, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: view, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0.0));
-        view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[button]-0-|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["button": button]));
-        view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[button(==\(unselectedImage.size.width))]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["button": button]));
-        view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[button(==\(unselectedImage.size.height))]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["button": button]));
+        if #available(iOS 11.0, *) {
+            NSLayoutConstraint.activate([
+                button.centerXAnchor.constraint(equalTo: view.centerXAnchor),
+                button.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
+                button.widthAnchor.constraint(equalToConstant: unselectedImage.size.width),
+                button.heightAnchor.constraint(equalToConstant: unselectedImage.size.height)
+            ])
+        } else {
+            view.addConstraint(NSLayoutConstraint(item: button, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: view, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0.0))
+            view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[button]-0-|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["button": button]));
+            view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[button(==\(unselectedImage.size.width))]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["button": button]))
+            view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[button(==\(unselectedImage.size.height))]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["button": button]))
+        }
 
         button.addTarget(self, action: #selector(centerButtonAction(_:)), for: .touchUpInside)
         centerButton = button