Extra 👌🏼

A Swift library with usefull and lightfull extensions for your Cocoa Touch projects.

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

Requirements

• iOS 9+
• Xcode 10+, Swift 4.2

Installation

Extra is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "Extra"

# or via subspec :

pod "Extra/UIKit"
pod "Extra/Foundation"
pod "Extra/CoreAnimation"
pod "Extra/Realm"

Content

Usage

Use the ex variable on your current type to access to the Extra methods :

UIApplication.ex.hideActivityIndicator()

UIKit extensions 🎨

UIApplication

• UIActivityIndicator accessibility : hideActivityIndicator() / showActivityIndicator()
• isLandscape() / isPortrait() quick access

UICollectionView

UICollectionView

• currentIndexPathForCenter() : return the index path of cell displayed at the center(x,y) of the UICollectionView
• public func scrollVertically(to: IndexPath, accordingTo: IndexPath, animated: Bool = default) : scroll to an item an be sur to let the other be vivisble if possible

UICollectionViewCell

• collectionView property : return the current UICollectionView related to the cell

UITableView

UITableView

• setAndLayoutTableHeaderView(_ headerView: UIView, edges: UIEdgeInsets? = default) : Configure and set the global table HeaderView and correctly set the frame to the fitting size
• layoutTableHeaderView(_ headerView: UIView, edges: UIEdgeInsets? = default) : Automatic height for your header. Call it on didLayoutSubviews
• setAndLayoutTableFooterView(_ footerView: UIView, edges: UIEdgeInsets? = default) : Configure and set the global table FooterView and correctly set the frame to the fitting size
• layoutTableFooterView(_ footerView: UIView, edges: UIEdgeInsets? = default) : Automatic height for your footer. Call it on didLayoutSubviews
• scrollToTop(animated: Bool) : Scrolls the tableView to the top (including its headerView).

UITableViewCell

• tableView property : return the current UITableView related to the cell

UIColor

• toImage(size: CGSize = default) -> UIImage? : Transform the current color to a sizable UIImage
• fromHexa(_ hexaString: String, alpha: CGFloat = default) -> UIColor? : Create a color from an hexa string

UIDevice

• isPad / isPhone quick access

UIImage

• from(color: UIColor, size: CGSize, cornerRadius: CGFloat = default) -> UIImage? : Creates an UIImage from and UIColor This is usefull for your UIButton to set filled background color for states.
• toBlackAndWhite() -> UIImage? : Transforms the current image to a new one with the CIColorMonochrome filter, with black input color.
• imageRotatedByDegrees(degrees: CGFloat) -> UIImage? : Correctly rotate your image according to the desired degrees.
• scaledFilledToSize(size: CGSize) -> UIImage? : This will resize the UIImage to the destination size This will fill your UIImage (and potentially enlarge it) By this way, this will not produce empty space on top/bottom or left/right sides, the ratio will not change.
• resizableImageByCenter() -> UIImage : Simple resize of your image based to it center.
• cutTile(with rect: CGRect) -> UIImage? : Cut and return a tile in the image with specified rect.
• scaledAspectFill(to size: CGSize) -> UIImage? : Creates a copy of the image simulating aspect fill to specified size

UIButton

• configureTitle(with title: String, font: UIFont, color: UIColor, highlightedColor: UIColor? = nil) : Configures the title of the button in normal and highlighted states
• configureLeftIcon(with image: UIImage, insets: UIEdgeInsets = .zero) : Configures left icon of the button
• configureBackground(with color: UIColor, highlightedColor: UIColor? = nil) : Configures background of the button in normal and highlighted states

UILabel

• width(fitting containerHeight: CGFloat, string: String, attributes: [NSAttributedStringKey: Any]) -> CGFloat : Estimates width of a label required to display specified text fitting container height.
• width(fitting containerHeight: CGFloat, attributedString: NSAttributedString) -> CGFloat : Estimates width of a label required to display specified text fitting container height.
• height(fitting containerWidth: CGFloat, string: String, attributes: [NSAttributedStringKey: Any]) -> CGFloat : Estimates height of a label required to display specified text fitting container width.
• height(fitting containerWidth: CGFloat, attributedString: NSAttributedString) -> CGFloat : Estimates height of a label required to display specified text fitting container width.

UITextView

• setNoPadding() : Configures textView without padding.

UINavigationController

• popPreviousAndPushViewController(_ controller: UIViewController) : The effect is like a replacement of the current stack, but just the last one UIViewController.
• popViewControllers(numberOf: Int, animated: Bool = default) : Pop the current stack of Navigation Controller by the specified number.

UIView

• initXib() : Use this method in your custom UIView with a specified Xib, to add your xib content at creation
• instantiateFromNib() -> UIView : Create and retrieve the root UIView of your Xib based on the current UIView class name
• addSubview(_ subview: UIView, insets: UIEdgeInsets) : Add a subview into the current UIView with potential insets.
• removeAllSubViews() : Recursively remove all your related subviews
• setAllSubviewsHidden(_ hidden: Bool) : Recursively hide all your related subviews
• addClearToDarkGradient(radius: CGFloat = default, direction: ExtraGradientDirection) : This will create a gradient into your current UIView (so this is available for UIImageView) Be sure to have a background color dark to have good results
• roundCorners(_ corners: UIRectCorner, radius: CGSize) : Apply a rounded mask to the current view
• addDashedBorder(color: CGColor, thickness: CGFloat) : Apply a dashed border to the current view
• addShadowBorder(color: UIColor, size: CGFloat) : Apply a shadow to all edges except the top border.
• addBottomDivider(color: UIColor, alpha: CGFloat, widthMultiplier: CGFloat) : Apply a bottom divider to the current view

UIViewController

• topMost() -> UIViewController? : Returns the current application’s top most view controller.
• addChildViewController(_ childController: UIViewController, in container: UIView, insets: UIEdgeInsets = default) : Simply programmatically adding a child view controller
• switchChilds(from originController: UIViewController?, to destinationController: UIViewController, in viewContainer: UIView, duration: TimeInterval = default, transitionOptions: UIViewAnimationOptions = default, completion: ((Bool) -> Void)? = default) : Switch between child view controllers

Foundation extensions

String

• heightConstrained(to width: CGFloat, attributes: [String : Any]? = default) -> CGFloat : Same as boundingRect(), but simplified !
• isValidEmail() -> Bool : [A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,6}
• firstCapitalized() -> String : Capitalize only the first letter of the entire string (localized capitalized)
• matchesRegex(regex: String) -> Bool : Check if the string matches to the passed regex
• base64() -> String? : Base-64 encoded string

Sequence

• withoutDuplicates() -> [Iterator.Element] : Returns an array with the content of this sequence after removing all duplicated elements.

Other extensions

CALayer

• applySketchShadow() : Reproduces and applies a shadow that nearly perfectly matches the design according to Zeplin or Sketch parameters.

Realm 💾

DetachableObject

Simply detach an object from Realm into memmory with its entire properties.

Object

For Object and Realm classes, use the ex property to access to the Extra extensions.

Queries

• static findFirst<T>(in context: Realm? = nil, object type: T.Type = T.self) -> T? where T: Object : Finds the first object of a specific type
• static findAll<T>(in context: Realm? = nil, object type: T.Type = T.self) -> Results<T> where T: Object : Finds all objects of a specific type

Writes

• add(in context: Realm? = nil, update: Bool = true) throws : Simply writes and adds or update your object in Realm
• static update<T>(object: T, in context: Realm? = nil) throws where T: Object : Adds or updates an object in Realm
• static update<T>(objects: [T], in context: Realm? = nil) throws where T: Object : Adds or updates many objects in Realm

Delete

• static delete<T>(object: T?, from context: Realm? = nil) throws where T: Object & ObjectRelationDeletable : Delete an object from Realm
• static delete<T>(objects: List<T>?, from context: Realm? = nil) throws where T: Object & ObjectRelationDeletable : Delete many objects from Realm
• static deleteAll<T>(from context: Realm? = nil, object type: T.Type = T.self) throws where T: Object & ObjectRelationDeletable : Delete all objects of a specific type from realm

Realm

• safeInstance() -> Realm : Return your [try Realm] instance no-throwable at any time
• safeInstance(config: Realm.Configuration) -> Realm : Return your [try Realm] instance no-throwable at any time froma specific configuration

Results

• subscript(safe index: Int) -> T? { get } : Safety getter object on your results
• ex_toArray() -> [T] : Return results as a sequence Temporary name

RealmSwift.List

• ex_toArray() -> [T] : Return lsit of object as a sequence Temporary name

Author

The iOS Team @Smart&Soft, software agency http://www.smartnsoft.com

License

Extra is available under the MIT license. See the LICENSE file for more info.