iOS7自定义ViewController转场和顶部布局指南

iOS7自定义ViewController转场和顶部布局指南

swift
class CustomTransitionDelegate: NSObject, UIViewControllerTransitioningDelegate {
    
    func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        return CustomTransitionAnimator()
    }
    
    func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        return CustomTransitionAnimator()
    }
}
class CustomTransitionAnimator: NSObject, UIViewControllerAnimatedTransitioning {
    
    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
        return 0.5
    }
    
    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
        let containerView = transitionContext.containerView
        let fromView = transitionContext.view(forKey: .from)!
        let toView = transitionContext.view(forKey: .to)!
        
        containerView.addSubview(toView)
        
        UIView.animate(withDuration: transitionDuration(using: transitionContext), animations: {
            fromView.alpha = 0.0
        }) { (finished) in
            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
        }
    }
}
class ViewController: UIViewController {
    
    let customTransitionDelegate = CustomTransitionDelegate()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let button = UIButton(type: .system)
        button.setTitle("Present", for: .normal)
        button.addTarget(self, action: #selector(presentNextViewController), for: .touchUpInside)
        button.frame = CGRect(x: 0, y: 0, width: 100, height: 50)
        button.center = view.center
        
        view.addSubview(button)
    }
    
    @objc private func presentNextViewController() {
        let nextViewController = NextViewController()
        nextViewController.modalPresentationStyle = .custom
        nextViewController.transitioningDelegate = customTransitionDelegate
        
        present(nextViewController, animated: true, completion: nil)
    }
}
class NextViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        view.backgroundColor = .white
        
        let closeButton = UIButton(type: .system)
        closeButton.setTitle("Close", for: .normal)
        closeButton.addTarget(self, action: #selector(closeViewController), for: .touchUpInside)
        closeButton.frame = CGRect(x: 0, y: 0, width: 100, height: 50)
        closeButton.center = view.center
        
        view.addSubview(closeButton)
    }
    
    @objc private func closeViewController() {
        dismiss(animated: true, completion: nil)
    }
}

swift
class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        navigationController?.navigationBar.isTranslucent = false
        navigationController?.navigationBar.barTintColor = UIColor(red: 0.0, green: 0.5, blue: 1.0, alpha: 1.0)
        
        let statusBarView = UIView(frame: CGRect(x: 0, y: 0, width: view.frame.width, height: 20))
        statusBarView.backgroundColor = UIColor(red: 0.0, green: 0.5, blue: 1.0, alpha: 1.0)
        
        view.addSubview(statusBarView)
    }
}