bmoliveira

import android.content.Context;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.support.annotation.Nullable;
import android.util.Log;
import android.util.Pair;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.gcm.GoogleCloudMessaging;

bmoliveira

static NSString *encodeText(NSString *string, int key)
{
    NSMutableString *result = [[NSMutableString alloc] init];
    for (int i = 0; i < [string length]; i++)
    {
        unichar c = [string characterAtIndex:i];
        c += key;
        [result appendString:[NSString stringWithCharacters:&c length:1]];
    }
    return result;

bmoliveira

protocol ReusableCell: AnyObject {
  static func reuseIdentifier() -> String?
  static func uiNibFromClass() -> UINib?
}

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extension ReusableCell where Self: UICollectionViewCell {
  static func uiNibFromClass() -> UINib? {
    return UINib(nibName: Self.className, bundle: nil)
  }

  static func reuseIdentifier() -> String? {
    return Self.className
  }
}

bmoliveira

extension UICollectionView {

  func registerCell<T: ReusableCell>(cellType: T.Type) {
    if let identifier = T.reuseIdentifier() {
      self.registerNib(T.uiNibFromClass(), forCellWithReuseIdentifier: identifier)
    }
  }

  func dequeueReusableCell<T: UICollectionViewCell>(index: Int) -> T {
    return dequeueReusableCell(NSIndexPath(forItem: index, inSection: 0))

bmoliveira

class ExampleCell: UICollectionViewCell, ReusableCell {
  func updateCellUI() {
    print("Here you should do something")
  }
}

class ExampleViewController: UIViewController {
  @IBOutlet weak var collectionView: UICollectionView!

  override func viewDidLoad() {

bmoliveira

public extension String {
  /**
   Swift 2 friendly localization syntax, replaces NSLocalizedString
   - Returns: The localized string.
   */
  func localized() -> String {
    if let path = NSBundle.mainBundle().pathForResource(Localize.currentLanguage(), ofType: "lproj"), bundle = NSBundle(path: path) {
      return bundle.localizedStringForKey(self, value: nil, table: nil)
    }
    else if let path = NSBundle.mainBundle().pathForResource(LCLBaseBundle, ofType: "lproj"), bundle = NSBundle(path: path) {

bmoliveira

public class Localize: NSObject {
  /**
   List available languages
   - Returns: Array of available languages.
   */
  public class func availableLanguages() -> [String] {
    return NSBundle.mainBundle().localizations
  }

  /**

bmoliveira

class ExampleViewController: UIViewController {
  @IBOutlet weak var collectionView: UICollectionView!

  override func viewDidLoad() {
    title = "Example title".localized()
    collectionView.registerCell(ExampleCell)
  }
}

Localization files example:

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protocol SegueHandlerType {
  associatedtype SegueIdentifier: RawRepresentable
}

// notice the cool use of where here to narrow down
// what could use these methods.
extension SegueHandlerType where Self: UIViewController,
  SegueIdentifier.RawValue == String
{