超惰性 extension 大全 + 默司微調

NSObject.swift

//
//  NSObject.swift
//  QBDemo01
//
//  Created by 默司 on 2016/12/2.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation

extension NSObject {
    class var className: String {
        return String(describing: self)
    }
    
    var className: String {
        return type(of: self).className
    }
}

String.swift

//
//  String.swift
//  QuickbloxDemo2
//
//  Created by 默司 on 2016/12/10.
//  Copyright © 2016年 默司. All rights reserved.
//

import UIKit

extension String {
    var url: URL? {
        return URL(string: self)
    }
    
    func bounds(for width: CGFloat, font: UIFont) -> CGRect {
        return (self as NSString).boundingRect(with: CGSize(width: width, height: CGFloat.greatestFiniteMagnitude), options: [.usesLineFragmentOrigin], attributes: [NSFontAttributeName: font], context: nil)
    }
}

UIAlertController.swift

//
//  Comparable.swift
//  QBDemo01
//
//  Created by 默司 on 2016/12/2.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation
import UIKit

extension UIAlertController {
    
    convenience init(title: String?, message: String?) {
        self.init(title: title, message: message, preferredStyle: .alert)
    }
    
    func addAction(title: String, style: UIAlertActionStyle = .default, handler: ((UIAlertAction) -> Void)? = nil) -> Self {
        let okAction = UIAlertAction(title: title, style: style, handler: handler)
        addAction(okAction)
        return self
    }
    
    func addActionWithTextFields(title: String, style: UIAlertActionStyle = .default, handler: ((UIAlertAction, [UITextField]) -> Void)? = nil) -> Self {
        let okAction = UIAlertAction(title: title, style: style) { [weak self] action in
            handler?(action, self?.textFields ?? [])
        }
        addAction(okAction)
        return self
    }
    
    func configureForIPad(sourceRect: CGRect, sourceView: UIView? = nil) -> Self {
        popoverPresentationController?.sourceRect = sourceRect
        if let sourceView = UIApplication.shared.topViewController?.view {
            popoverPresentationController?.sourceView = sourceView
        }
        return self
    }
    
    func configureForIPad(barButtonItem: UIBarButtonItem) -> Self {
        popoverPresentationController?.barButtonItem = barButtonItem
        return self
    }
    
    func addTextField(handler: @escaping (UITextField) -> Void) -> Self {
        addTextField(configurationHandler: handler)
        return self
    }
    
    func present() {
        UIApplication.shared.topViewController?.present(self, animated: true, completion: nil)
    }
    
    func dismiss() {
        self.dismiss(animated: true)
    }
}

UIApplication.swift

//
//  UIApplication.swift
//  QBDemo01
//
//  Created by 默司 on 2016/12/2.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation
import UIKit

extension UIApplication {
    var topViewController: UIViewController? {
        guard var topViewController = UIApplication.shared.keyWindow?.rootViewController else { return nil }
        
        while let presentedViewController = topViewController.presentedViewController {
            topViewController = presentedViewController
        }
        return topViewController
    }
    
    var topNavigationController: UINavigationController? {
        return topViewController as? UINavigationController
    }
}

UICollectionView.swift

//
//  UICollectionView.swift
//  QBDemo01
//
//  Created by 默司 on 2016/12/2.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation
import UIKit

extension UICollectionView {
    func register<T: UICollectionViewCell>(cellType: T.Type) {
        let className = cellType.className
        let nib = UINib(nibName: className, bundle: nil)
        register(nib, forCellWithReuseIdentifier: className)
    }
    
    func register<T: UICollectionViewCell>(cellTypes: [T.Type]) {
        cellTypes.forEach { register(cellType: $0) }
    }
    
    func register<T: UICollectionReusableView>(reusableViewType: T.Type, of kind: String = UICollectionElementKindSectionHeader) {
        let className = reusableViewType.className
        let nib = UINib(nibName: className, bundle: nil)
        register(nib, forSupplementaryViewOfKind: kind, withReuseIdentifier: className)
    }
    
    func register<T: UICollectionReusableView>(reusableViewTypes: [T.Type], kind: String = UICollectionElementKindSectionHeader) {
        reusableViewTypes.forEach { register(reusableViewType: $0, of: kind) }
    }
    
    func dequeueReusableCell<T: UICollectionViewCell>(with type: T.Type, for indexPath: IndexPath) -> T {
        return dequeueReusableCell(withReuseIdentifier: type.className, for: indexPath) as! T
    }
    
    func dequeueReusableView<T: UICollectionReusableView>(with type: T.Type, for indexPath: IndexPath, of kind: String = UICollectionElementKindSectionHeader) -> T {
        return dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: type.className, for: indexPath) as! T
    }
}

UIColor.swift

//
//  UIColor.swift
//  QBDemo01
//
//  Created by 默司 on 2016/12/2.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation
import UIKit

extension UIColor {
    convenience init(hex: Int, alpha: Double = 1.0) {
        let r = CGFloat((hex & 0xFF0000) >> 16) / 255.0
        let g = CGFloat((hex & 0x00FF00) >> 8) / 255.0
        let b = CGFloat(hex & 0x0000FF) / 255.0
        self.init(red: r, green: g, blue: b, alpha: CGFloat(alpha))
    }
    
    func lighter(by percentage: CGFloat = 10.0) -> UIColor? {
        return self.adjust(by: abs(percentage))
    }
    
    func darker(by percentage: CGFloat = 10.0) -> UIColor? {
        return self.adjust(by: -1 * abs(percentage))
    }
    
    func adjust(by percentage:CGFloat = 10.0) -> UIColor? {
        var r:CGFloat = 0, g:CGFloat = 0, b:CGFloat = 0, a:CGFloat = 0;
        
        if self.getRed(&r, green: &g, blue: &b, alpha: &a) {
            return UIColor(red: min(r + percentage/100, 1.0),
                           green: min(g + percentage/100, 1.0),
                           blue: min(b + percentage/100, 1.0),
                           alpha: a)
        } else {
            return nil
        }
    }
}

UIimage.swift

//
//  UIimage.swift
//  Gotyou
//
//  Created by 默司 on 2016/12/1.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation
import UIKit

extension UIImage {
    static func image(named: String, in bundle: Bundle? = Bundle(identifier: "com.gotyou.app")) -> UIImage {
        return UIImage(named: named, in: bundle, compatibleWith: nil)!
    }
    
    func resize(max: CGFloat) -> UIImage? {
        
        var image: UIImage?
        
        if self.size.width > self.size.height {
            let scale = max / self.size.width
            let height = self.size.height * scale
            UIGraphicsBeginImageContext(CGSize(width: max, height: height))
            draw(in: CGRect(x: 0, y: 0, width: max, height: height))
            image = UIGraphicsGetImageFromCurrentImageContext()
            UIGraphicsEndImageContext()
        } else {
            let scale = max / self.size.width
            let width = self.size.width * scale
            UIGraphicsBeginImageContext(CGSize(width: width, height: max))
            draw(in: CGRect(x: 0, y: 0, width: width, height: max))
            image = UIGraphicsGetImageFromCurrentImageContext()
            UIGraphicsEndImageContext()
        }
        
        return image
    }
}

UINavigationController.swift

//
//  UINavigationController.swift
//  QBDemo01
//
//  Created by 默司 on 2016/12/2.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation
import UIKit

extension UINavigationController {
    static var `default`: UINavigationController? {
        return UIApplication.shared.topNavigationController
    }
    
    func push<T: UIViewController>(vcClass: T.Type, storyboard: UIStoryboard = .main) {
        self.pushViewController(storyboard.instantiateViewController(withIdentifier: String(describing: vcClass)), animated: true)
    }
}

UIStoryboard.swift

//
//  UIStoryboard.swift
//  QBDemo01
//
//  Created by 默司 on 2016/12/2.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation
import UIKit

extension UIStoryboard {
    static let main = UIStoryboard(name: "Main", bundle: Bundle.main)
}

UITableView.swift

//
//  UITableView.swift
//  QBDemo01
//
//  Created by 默司 on 2016/12/2.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation
import UIKit

extension UITableView {
    func register<T: UITableViewCell>(cellType: T.Type) {
        let className = cellType.className
        let nib = UINib(nibName: className, bundle: nil)
        register(nib, forCellReuseIdentifier: className)
    }
    
    func register<T: UITableViewCell>(cellTypes: [T.Type]) {
        cellTypes.forEach { register(cellType: $0) }
    }
    
    func dequeueReusableCell<T: UITableViewCell>(with type: T.Type, for indexPath: IndexPath) -> T {
        return self.dequeueReusableCell(withIdentifier: type.className, for: indexPath) as! T
    }
}

UIView.swift

//
//  UIView.swift
//  QBDemo01
//
//  Created by 默司 on 2016/12/2.
//  Copyright © 2016年 默司. All rights reserved.
//

import Foundation
import UIKit

protocol NibInstantiatable {}
extension UIView: NibInstantiatable {}

extension NibInstantiatable where Self: UIView {
    
    /// XIBのViewを生成
    ///
    /// - Parameter ownerOrNil:
    /// - Returns:
    static func instantiate(withOwner ownerOrNil: Any? = nil) -> Self {
        let nib = UINib(nibName: self.className, bundle: nil)
        return nib.instantiate(withOwner: ownerOrNil, options: nil)[0] as! Self
    }
}


extension UIView {
    
    /// 子Viewを全て削除
    func removeAllSubviews() {
        subviews.forEach {
            $0.removeFromSuperview()
        }
    }
}

extension UIView {
    
    /// スクショを撮る
    ///
    /// - Parameter width:
    /// - Returns: 
    func screenShot(width: CGFloat) -> UIImage? {
        let imageBounds = CGRect(x: 0, y: 0, width: width, height: bounds.size.height * (width / bounds.size.width))
        
        UIGraphicsBeginImageContextWithOptions(imageBounds.size, true, 0)
        
        drawHierarchy(in: imageBounds, afterScreenUpdates: true)
        
        var image: UIImage?
        let contextImage = UIGraphicsGetImageFromCurrentImageContext()
        
        if let contextImage = contextImage, let cgImage = contextImage.cgImage {
            image = UIImage(
                cgImage: cgImage,
                scale: UIScreen.main.scale,
                orientation: contextImage.imageOrientation
            )
        }
        
        UIGraphicsEndImageContext()
        
        return image
    }
}

UIViewController.swift

//
//  UIViewController.swift
//  Gotyou
//
//  Created by 默司 on 2016/12/5.
//  Copyright © 2016年 默司. All rights reserved.
//

import UIKit

protocol StoryBoardInstantiatable {}
extension UIViewController : StoryBoardInstantiatable {}

extension StoryBoardInstantiatable where Self: UIViewController {
    static func instantiate(fromStoryboard storyboard: UIStoryboard = .main) -> Self {
        return storyboard.instantiateViewController(withIdentifier: self.className) as! Self
    }
}