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POCan't update the UI
 

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    <p>In my matching cards game, i'v created a <code>IBAction</code> method for a newGame.</p> <p>Now, I have a method called <code>updateUI</code> to change the state of the <code>UI</code> according to the actions.</p> <p>In my <code>updateUI</code> method I have a im calling alpha to fade away the matching cards, But when i'm calling the <code>newGame</code> method, The cards still fade away from the time i called the alpha...</p> <p>This is my <code>ViewController</code>, Please tell me what i'm doing wrong..thanks! :</p> <pre><code>#import "CardGameViewController.h" #import "PlayingCardsDeck.h" #import "CardMatchingGame.h" @interface CardGameViewController () @property (weak, nonatomic) IBOutlet UILabel *flipsLabel; @property (weak, nonatomic) IBOutlet UILabel *notificationLabel; @property (weak, nonatomic) IBOutlet UILabel *scoreCounter; @property (strong, nonatomic) IBOutletCollection(UIButton) NSArray *cardButtons; @property (strong, nonatomic) CardMatchingGame *game; @property (nonatomic) int flipsCount; @end @implementation CardGameViewController //creating the getter method that creates a new card game. -(CardMatchingGame *) game { if (!_game) _game = [[CardMatchingGame alloc] initWithCardCount:self.cardButtons.count usingDeck:[[PlayingCardsDeck alloc] init]]; return _game; } //creating a setter for the IBOutletCollection cardButtons -(void) setCardButtons:(NSArray *)cardButtons { _cardButtons = cardButtons; [self updateUI]; } //creating the setter for the flipCount property. Whick is setting the flipsLabel to the right text and adding the number of counts. -(void) setFlipsCount:(int)flipsCount { _flipsCount = flipsCount; self.flipsLabel.text = [NSString stringWithFormat:@"Flips: %d", self.flipsCount]; } -(void) updateUI { for (UIButton *cardButton in self.cardButtons) { Card *card = [self.game cardAtIndex:[self.cardButtons indexOfObject:cardButton]]; [cardButton setTitle:card.contents forState:UIControlStateSelected]; [cardButton setTitle:card.contents forState:UIControlStateSelected|UIControlStateDisabled]; cardButton.selected = card.isFaceUp; cardButton.enabled = !card.unplayble; if (card.unplayble) { cardButton.alpha = 0.1; } self.scoreCounter.text = [NSString stringWithFormat:@"Score: %d", self.game.score]; if (self.game.notification) { self.notificationLabel.text = self.game.notification; } } } //Here I created a method to flipCards when the card is selected, and give the user a random card from the deck each time he flips the card. After each flip i'm incrementing the flipCount setter by one. - (IBAction)flipCard:(UIButton *)sender { [self.game flipCardAtIndex:[self.cardButtons indexOfObject:sender]]; self.flipsCount++; [self updateUI]; } - (IBAction)newGame:(UIButton *)sender { [self.game cleanHistory]; self.flipsCount = 0; self.game = nil; [self updateUI]; } @end </code></pre> <p>This is the cleanHistory method:</p> <pre><code>-(void)cleanHistory { for (Card *card in self.cards) { card.unplayble = NO; card.faceUp = NO; } self.notification = nil; self.score = 0; } </code></pre>
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