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[英]How do you make the selected segment of a UISegmentedControl darker?
[英]How do I get my segment UISegmentedControl to respond?
在我的ViewController中,我添加了一個UISegmentedControl來為不同的Segmented Control選擇執行不同的任務。 它是一款卡片配對游戲。
一切似乎工作得很好,除了分段控制沒有對選擇作出反應..,我創建了一個開關,以便在“twoCardGame”和“threeCardGame”的情況下做一些事情。
根據我的理解,使用枚舉來定義這些變量會很好,我在控制器的頂部做了一些,但看起來我錯過了一些內容。
很抱歉,如果它沒有如此指示,但我的控制器非常簡短,如果你能告訴我在UISegmentedControl方面做錯了什么,我將不勝感激。
這里是:
#import "CardGameViewController.h"
#import "PlayingCardsDeck.h"
#import "CardMatchingGame.h"
enum CardGame {
twoCardGame,
threeCardGame
};
@interface CardGameViewController ()
@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 (weak, nonatomic) IBOutlet UISegmentedControl *numberOfCardsToPlayWith;
@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]];
_game.numberOfCardsToPlayWith = [self selectNumberOfCardsToPlayWith];
}
return _game;
}
//creating a setter for the IBOutletCollection cardButtons
-(void)setCardButtons:(NSArray *)cardButtons {
_cardButtons = cardButtons;
[self updateUI];
}
- (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.isUnplayable;
cardButton.alpha = card.isUnplayable ? 0.3 : 1.0;
}
self.scoreCounter.text = [NSString stringWithFormat:@"Score: %d", self.game.score];
}
//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 updateUI];
}
//sending an alert if the user clicked on new game button
- (IBAction)newGame:(UIButton *)sender {
UIAlertView* mes=[[UIAlertView alloc] initWithTitle:@"Think about it for a sec..?" message:@"This will start a new game" delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil];
[mes show];
}
- (NSUInteger)selectNumberOfCardsToPlayWith {
switch (self.numberOfCardsToPlayWith.selectedSegmentIndex) {
case twoCardGame:
return 2;
case threeCardGame:
return 3;
default:
return 2;
}
[self updateUI];
}
//preforming an action according to the user choice for the alert yes/no to start a new game
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex != [alertView cancelButtonIndex]) {
self.game = nil;
for (UIButton *button in self.cardButtons) {
Card *card = [self.game cardAtIndex:[self.cardButtons indexOfObject:button]];
card.isUnplayable = NO;
card.isFaceUp = NO;
button.alpha = 1;
}
self.notificationLabel.text = nil;
[self updateUI];
}
}
@end
好吧,我沒有看到任何addTarget:
調用分段控件。 所以你可能在Interface Builder中設置它們。 檢查IB連接。 如果一切都在IB似乎確定-嘗試addTarget:
編程。
我認為你最好創建一個選擇器並將其添加到分段控制目標,如下所示:
[segmentedControl addTarget:self
action:@selector(selectNumberOfCardsToPlayWith:)
forControlEvents:UIControlEventValueChanged];
- (NSUInteger)selectNumberOfCardsToPlayWith:(UISegmentedControl *)control {
switch (control.selectedSegmentIndex) {
case twoCardGame:
return 2;
case threeCardGame:
return 3;
default:
return 2;
}
[self updateUI];
}
這應該工作正常。 目前使用類似的代碼。
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