终于有时间跟新了，两周时间复（yu）习（xi）了5门考试累觉不爱。。。。。。
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第六课
1、控制器多态性
这里控制器多态性是指在控制器中使用继承，通过继承构造通用视图控制器（ViewController），在具体的MVC中继承通用视图控制器实现具体功能（通常是父类中的抽象方法）
注意：objective-C并没有abstract关键字，因此通常要通过注释的方式说明，抽象方法需要在.h文件中声明，一般实现文件中的抽象方法没有具体功能，只返回nil。
storyboard的多态控制器类需要在属性检查器中更改指定的类。
说明：通过继承，父类中的连接也会被完整的继承下来，如输出口（Outlet）等。
demo地址：https://github.com/NSLogMeng/Stanford_iOS7_Study/commit/238167d6080df94e0383aceccab6d16fea290af2
2、多MVC
理解：多MVC基本组合方式，子MVC作为父MVC的视图（View）呈现。
（1）UINavigationController（以日历应用为例）
1) Navigation Bar
a.title 当前MVC的标题，与内容有关
b.navigationItem.rightBarButtonItems（ViewController属性） 功能按钮（注意与UIButton区别，UIBarButton的数组，即可以嵌入多个BarButton）
c.Back Button (一般由UINavigationController自动设定，默认为上一MVC的title，长度较长时显示为back，亦可自行设置)
当点击当前MVC的back时，当前MVC会被释放，返回前一个MVC
2）toolbarItems （ViewController属性）
底部出现（an NSArray of UIBarButtonItems ）
3）rootViewController
指向一个MVC的controller，作为根MVC
//UINavigationController常用方法- (instancetype)initWithRootViewController:(UIViewController *)rootViewController; // 设置根视图控制器- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated; //压入新视图- (UIViewController *)popViewControllerAnimated:(BOOL)animated;//弹出当前视图//navigationBar@PRoperty(nonatomic,getter=isNavigationBarHidden) BOOL navigationBarHidden;- (void)setNavigationBarHidden:(BOOL)hidden animated:(BOOL)animated;//toolbar@property(nonatomic,getter=isToolbarHidden) BOOL toolbarHidden NS_AVAILABLE_IOS(3_0);- (void)setToolbarHidden:(BOOL)hidden animated:(BOOL)animated NS_AVAILABLE_IOS(3_0);
（2）segue（非常重要，MVC间切换的基础）
push:一种以push，pop方式在UINavigationController上进行MVC切换的方式
identifier:用来表示push，方便在代码中使用
1 //需要跳转时的Action 2 - (IBAction)rentEquipment 3 { 4 if (self.snowTraversingTalent == Skiing) { 5 [self performSegueWithIdentifier:@“AskAboutSkis” sender:self]; 6 } else { 7 [self performSegueWithIdentifier:@“AskAboutSnowboard” sender:self]; 8 } 9 }10 11 //为各segue做跳转前的准备12 - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {13 if ([segue.identifier isEqualToString:@“DoSomething”]) {14 if ([segue.destinationViewController isKindOfClass:[DoSomethingVC class]]) {15 DoSomethingVC *doVC = (DoSomethingVC *)segue.destinationViewController;16 doVC.neededInfo = ...; }17 } 18 }19 20 //segue跳转判断21 - (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender {22  if ([segue.identifier isEqualToString:@“DoAParticularThing”]) {23 return [self canDoAParticularThing] ? YES : NO;24 }25 }
注意：segue跳转的准备工作中并未设置好输出口，因此不能直接赋值给新MVC的输出口，MVC中需要设置API来接收数据。
(3)demo : Attributor Stats
Use a UINavigationController to show “statistics” on colors and outlining in Attributor.
demo地址：https://github.com/NSLogMeng/Stanford_iOS7_Study/commit/fba52faaefd72cb1d4e0ef0c9029092fd5749f63
(4)UITabBarController（以时钟应用为例）
//设置选项个数，一般不超过5个，超过5个时，第五个及其他将集合在最后一栏@property (nonatomic, strong) NSArray *viewControllers;
3、作业
要求：a.在Matchismo 的基础上添加一个新的MVC作为Set纸牌匹配游戏。
b.新的Set纸牌游戏与原纸牌游戏类似（3张牌匹配模式）
c.原游戏的功能保留，可以适当删减或更改UI(原要求是取消UISegmentedControll)
d.使用UITabBarController将两个游戏分开
e.Set纸牌的数目可能会与之前不同，选择合适的UI尺寸
f.使用▲ ● ■ 以及NSAttributedString 来表示Set纸牌的三个属性（形状，颜色，阴影）
g.每个游戏必须展示当前的得分状况，并允许用户重置
h.使用NSAttributedString来记录并展示纸牌匹配状况
i.使用UINavigationController 添加新的MVC来详细展示纸牌匹配情况的历史
作业解析：
最终实现效果如下图：
实现过程：
针对上次作业的结果对纸牌游戏再次进行抽象化并添加Set纸牌游戏
抽象化结果：https://github.com/NSLogMeng/Stanford_iOS7_Study/commit/58afa7577cb339328819fccb5422aef27fd843ff
a.添加Set及Model的抽象化
SetCard
SetCard的匹配详见作业要求中的规则，此处判定匹配成功则score为1，否则为0（仅作为判定标记，也可以根据自己喜好自定义分数规则）
1 #import "Card.h" 2 3 @interface SetCard : Card 4 5 @property (strong,nonatomic) NSString *suit;// ▲ ● ■ 6 @property (strong,nonatomic) NSString *color;// red green purple 7 @property (nonatomic) BOOL shading; 8 9 + (NSArray *)validSuits;10 + (NSArray *)validColors;11 + (NSUInteger)shadingNumber;12 13 @end
1 #import "SetCard.h" 2 3 @interface SetCard() 4 5 @end 6 7 @implementation SetCard 8 9 - (NSString *)contents10 {11 return nil;12 }13 14 - (int)match:(NSArray *)otherCards15 {16 int score = 0;17 18 if ([otherCards count] == 2)19 {20 SetCard *firstCard = [otherCards firstObject];21 SetCard *secondCard = [otherCards lastObject];22 if ([self.suit isEqualToString:firstCard.suit] && [firstCard.suit isEqualToString:secondCard.suit])23 {24 score += 1;25 }26 else if (![self.suit isEqualToString:firstCard.suit] && ![self.suit isEqualToString:secondCard.suit] && ![firstCard.suit isEqualToString:secondCard.suit])27 {28 score += 1;29 }30 else31 {32 score -= 1;33 }34 35 if ([self.color isEqualToString:firstCard.color] && [firstCard.color isEqualToString:secondCard.color])//全相等36 {37 score += 1;38 }39 else if (![self.color isEqualToString:firstCard.color] && ![self.color isEqualToString:secondCard.color] && ![firstCard.color isEqualToString:secondCard.color])//全不相等40 {41 score += 1;42 }43 else44 {45 score -= 1;46 }47 48 if ((self.shading == firstCard.shading) && (firstCard.shading == secondCard.shading))49 {50 score += 1;51 }52 else53 {54 score -= 1;55 }56 57 }58 59 if (score == 3)60 {61 score = 1;62 }63 else64 {65 score = 0;66 }67 68 return score;69 }70 71 + (NSArray *)validSuits72 {73 return @[@"▲",@"▲▲",@"▲▲▲",@"●",@"●●",@"●●●",@"■",@"■ ■",@"■ ■ ■"];74 }75 76 + (NSArray *)validColors77 {78 return @[@"red",@"green",@"purple"];79 }80 81 82 + (NSUInteger)shadingNumber83 {84 return 2;85 }
SetCardDeck
与PlayingCardDeck类似
1 #import "Deck.h"2 3 @interface SetCardDeck : Deck4 5 @end
1 #import "SetCardDeck.h" 2 #import "SetCard.h" 3 4 @implementation SetCardDeck 5 6 - (instancetype) init 7 { 8 self = [super init]; 9 if (self)10 {11 for (NSString *suit in [SetCard validSuits])12 {13 for (NSString *color in [SetCard validColors])14 {15 for (NSUInteger i = 0; i < [SetCard shadingNumber]; i++)16 {17 SetCard *card = [[SetCard alloc] init];18 card.suit = suit;19 card.color = color;20 card.shading = (i<1) ? true : false;21 22 [self addCard:card];23 }24 }25 }26 }27 return self;28 }29 30 @end
CardMatchingGame的抽象化
上次作业中我们的CardMatchingGame只针对PlayingCard的匹配规则及方法在SetCard中任然类似或适用，因此我们抽象化CardMatchingGame，使其成为PlayingCardMatchingGame与SetCardMatchingGame的超类。
首先我们根据作业要求我们添加gameStateHistory属性来保存游戏进行的历史数据，由于可能会出现多纸牌匹配，因此添加validOfOtherCards属性来获取其余纸牌的内容。因为gameState属性最好使用只读属性，因此我们在超类中去除此属性而在子类中实现
1 #import <Foundation/Foundation.h> 2 #import "Deck.h" 3 #import "Card.h" 4 5 static const int MISMATCH_PENALTY = 2; 6 static const int MATCH_BOUNDS = 4; 7 static const int COST_TO_CHOOSE = 1; 8 9 @interface CardMatchingGame : NSObject10 11 // designated initializer12 - (instancetype) initWithCardCount:(NSUInteger)count13 usingDeck:(Deck *)deck;14 - (void) chooseCardAtIndex:(NSUInteger)index;15 - (Card *) cardAtIndex:(NSUInteger)index;16 17 - (NSString *)validOfOtherCards:(NSArray *)otherCards;18 19 @property (nonatomic,readonly) NSString *validOfOtherCards;20 @property (nonatomic,readonly) NSInteger score;21 @property (nonatomic) NSUInteger gameModel;// >=222 @property (nonatomic,strong) NSMutableArray *gameStateHistory;23 24 @end
1 #import "CardMatchingGame.h" 2 3 @interface CardMatchingGame() 4 5 @property (nonatomic,readwrite) NSString *validOfOtherCards; 6 @property (nonatomic,readwrite) NSInteger score; 7 @property (nonatomic,strong) NSMutableArray *cards;//of playingcard 8 9 @end 10 11 @implementation CardMatchingGame 12 13 - (NSMutableArray *)cards 14 { 15 if (!_cards) _cards = [[NSMutableArray alloc] init]; 16 return _cards; 17 } 18 19 - (NSMutableArray *)gameStateHistory 20 { 21 if (!_gameStateHistory) 22 { 23 _gameStateHistory = [[NSMutableArray alloc] init]; 24 } 25 return _gameStateHistory; 26 } 27 28 - (instancetype) initWithCardCount:(NSUInteger)count usingDeck:(Deck *)deck 29 { 30 self = [super init]; 31 if (self) 32 { 33 for (int i = 0; i < count; i++) 34 { 35 Card *card = [deck drawRandomCard]; 36 if (card) 37 { 38 [self.cards addObject:card]; 39 } 40 else 41 { 42 self = nil; 43 break; 44 } 45 } 46 } 47 48 return self; 49 } 50 51 - (Card *) cardAtIndex:(NSUInteger)index 52 { 53 return (index < [self.cards count]) ? self.cards[index] : nil; 54 } 55 56 - (void) chooseCardAtIndex:(NSUInteger)index 57 { 58 Card *card = [self cardAtIndex:index]; 59 if (!card.isMacthed) 60 { 61 if (card.isChosen) 62 { 63 card.chosen = NO; 64 } 65 else 66 { 67 // match against other chosen cards 68 NSMutableArray *otherCards = [NSMutableArray arrayWithCapacity:self.gameModel]; 69 70 for (Card *otherCard in self.cards) 71 { 72 if (otherCard.isChosen && !otherCard.isMacthed) 73 { 74 [otherCards addObject:otherCard]; 75 } 76 } 77 78 //不能放于for循环之前，否则会将本次被选择的牌加入cards，不能放于下面的if之后，否则当if成立时返回，没有将本次翻牌的cost记录，且不能翻牌 79 self.score -= COST_TO_CHOOSE * self.gameModel; 80 card.chosen = YES; 81 82 if ([otherCards count] < self.gameModel - 1) 83 { 84 return; 85 } 86 else 87 { 88 self.validOfOtherCards = [self validOfOtherCards:otherCards]; 89 int matchScore = [card match:otherCards]; 90 91 if (matchScore) 92 { 93 self.score += matchScore * MATCH_BOUNDS * self.gameModel; 94 for (Card *otherCard in otherCards) 95 { 96 otherCard.matched = YES; 97 } 98 card.matched = YES; 99 }100 else101 {102 self.score -= MISMATCH_PENALTY * self.gameModel;103 for (Card *otherCard in otherCards)104 {105 otherCard.chosen = NO;106 }107 }108 }109 }110 }111 }112 113 - (NSString *)validOfOtherCards:(NSArray *)otherCards114 {115 NSMutableString *string = [[NSMutableString alloc] init];116 for (Card *card in otherCards)117 {118 [string appendFormat:@"%@ ",card.contents];119 }120 return string;121 }122 123 @end
子类化的PlayingCardMatchingGame
实现类gameState的记录，并添加方法使其在纸牌匹配时记录状态及状态历史
1 #import "CardMatchingGame.h"2 3 @interface PlayingCardMatchingGame : CardMatchingGame4 5 @property (nonatomic,readonly) NSString *gameState;6 7 @end
1 #import "PlayingCardMatchingGame.h" 2 3 @interface PlayingCardMatchingGame() 4 5 @property (nonatomic,readwrite) NSString *gameState; 6 7 @end 8 9 @implementation PlayingCardMatchingGame10 11 - (void)chooseCardAtIndex:(NSUInteger)index12 {13 int forwardScore = self.score;14 [super chooseCardAtIndex:index];15 [self updateGameState:forwardScore withIndexOfCard:index];16 }17 18 - (void)updateGameState:(int)forwardScore withIndexOfCard:(int)index19 {20 if (self.score == forwardScore - self.gameModel * COST_TO_CHOOSE)21 {22 _gameState = [self cardAtIndex:index].contents;23 }24 else if (self.score < (forwardScore - self.gameModel * COST_TO_CHOOSE))25 {26 _gameState = [NSString stringWithFormat:@"%@ with %@ not matched. %d point penalty!",[self cardAtIndex:index].contents,self.validOfOtherCards,forwardScore - self.score];27 [self.gameStateHistory addObject:_gameState];28 }29 else if (self.score > (forwardScore - self.gameModel * COST_TO_CHOOSE))30 {31 _gameState = [NSString stringWithFormat:@"%@ matched %@ . get %d score!",[self cardAtIndex:index].contents,self.validOfOtherCards,self.score - forwardScore];32 [self.gameStateHistory addObject:_gameState];33 }34 }35 36 @end
子类化的SetCardMatchingGame
与PlayingCardMatchingGame类似，注意在SetCard中并没有content的数据，因此要重写validOfOtherCard：方法，以保证正确获取SetCard的内容
1 #import "CardMatchingGame.h"2 3 @interface SetCardMatchingGame : CardMatchingGame4 5 @property (nonatomic,readonly) NSString *gameState;6 7 @end
1 #import "SetCardMatchingGame.h" 2 #import "SetCard.h" 3 4 @interface SetCardMatchingGame() 5 6 @property (nonatomic,readwrite) NSString *gameState; 7 8 @end 9 10 @implementation SetCardMatchingGame11 12 - (void)chooseCardAtIndex:(NSUInteger)index13 {14 int forwardScore = self.score;15 [super chooseCardAtIndex:index];16 [self updateGameState:forwardScore withIndexOfCard:index];17 }18 19 - (NSString *)validOfOtherCards:(NSArray *)otherCards20 {21 NSMutableString *string = [[NSMutableString alloc] init];22 for (SetCard *card in otherCards)23 {24 [string appendString:card.suit];25 }26 return string;27 }28 29 - (void)updateGameState:(int)forwardScore withIndexOfCard:(int)index30 {31 if (self.score == forwardScore - (self.gameModel * COST_TO_CHOOSE))32 {33 _gameState = ((SetCard *)[self cardAtIndex:index]).suit;34 }35 else if (self.score < (forwardScore - (self.gameModel * COST_TO_CHOOSE)))36 {37 _gameState = [NSString stringWithFormat:@"%@ with %@ not matched. %d point penalty!",((SetCard *)[self cardAtIndex:index]).suit,self.validOfOtherCards,forwardScore - self.score];38 [self.gameStateHistory addObject:_gameState];39 }40 else if (self.score > (forwardScore - (self.gameModel * COST_TO_CHOOSE)))41 {42 _gameState = [NSString stringWithFormat:@"%@ matched %@ . get %d score!",((SetCard *)[self cardAtIndex:index]).suit,self.validOfOtherCards,self.score - forwardScore];43 [self.gameStateHistory addObject:_gameState];44 }45 }46 47 @end
b.UI的更新
如图：
由于SetCard的游戏规则，SetCard并不会被翻回到背面，因此要更改纸牌的牌面图片
c.Controller的抽象化及子类化实现
上次作业中针对ViewController有很多只与PlayingCardMatchingGame有关的内容，此次将这些内容转移到PlayingCardGameViewController中，对ViewController进行抽象化，并且也在子类SetCardGameViewController中实现SetCard匹配游戏
ViewController
由于许多有关UI的操作需要在子类中实现，因此将他们放到.h文件中，同时titleForCard:与backgroundImageForCard:方法也许要在SetCard子类中重写（想想为什么？），因此也放入.h文件中
1 #import <UIKit/UIKit.h> 2 #import "Deck.h" 3 4 @class CardMatchingGame; 5 6 @interface ViewController : UIViewController 7 8 //protected 9 //for subclasses10 - (Deck *)createDeck; // abstract11 12 @property (strong,nonatomic) CardMatchingGame *game;13 @property (strong, nonatomic) IBOutletCollection(UIButton) NSArray *cardButtons;14 @property (weak, nonatomic) IBOutlet UILabel *scoreLable;15 16 - (NSUInteger)cardButtonsNumber;17 - (void) updateUI;18 - (NSString *)titleForCard:(Card *)card;19 - (UIImage *)backgroundImageForCard:(Card *)card;20 21 @end
1 #import "ViewController.h" 2 #import "CardMatchingGame.h" 3 4 @interface ViewController () 5 6 @end 7 8 @implementation ViewController 9 10 - (NSUInteger)cardButtonsNumber11 {12 return [_cardButtons count];13 }14 15 - (Deck *)createDeck // abstract16 {17 return nil;18 }19 20 - (IBAction)touchCardButton:(UIButton *)sender21 {22 NSUInteger cardIndex = [self.cardButtons indexOfObject:sender];23 [self.game chooseCardAtIndex:cardIndex];24 [self updateUI];25 }26 27 - (void) updateUI28 {29 for (UIButton *cardButton in self.cardButtons)30 {31 NSUInteger cardIndex = [self.cardButtons indexOfObject:cardButton];32 Card *card = [self.game cardAtIndex:cardIndex];33 [cardButton setTitle:[self titleForCard:card] forState:UIControlStateNormal];34 [cardButton setBackgroundImage:[self backgroundImageForCard:card] forState:UIControlStateNormal];35 cardButton.enabled = !card.isMacthed;36 }37 self.scoreLable.text = [NSString stringWithFormat:@"Score:%ld",(long)self.game.score];38 }39 40 - (NSString *)titleForCard:(Card *)card41 {42 return card.isChosen ? card.contents : nil;43 }44 45 - (UIImage *)backgroundImageForCard:(Card *)card46 {47 return [UIImage imageNamed:card.isChosen ? @"cardFront" : @"cardBack"];48 }49 50 @end
PlayingCardGameController
与上次作业基本相同，只不过变为从更抽象的超类中继承为子类(一些只适用于PlayingCardGame的UI与方法在本类实现)，并且添加了History功能
1 #import "ViewController.h"2 3 @interface PlayingCardGameViewController : ViewController4 5 @end
1 #import "PlayingCardGameViewController.h" 2 #import "PlayingCardDeck.h" 3 #import "PlayingCardMatchingGame.h" 4 #import "HistoryViewController.h" 5 6 @interface PlayingCardGameViewController () 7 8 @property (weak, nonatomic) IBOutlet UISegmentedControl *gameModelSelectSegmented; 9 @property (weak, nonatomic) IBOutlet UILabel *gameModelLable; 10 @property (weak, nonatomic) IBOutlet UITextField *matchModelTextFiled; 11 @property (weak, nonatomic) IBOutlet UILabel *gameStateLable; 12 @property (weak, nonatomic) IBOutlet UIButton *restartButton; 13 @property (nonatomic) NSUInteger selfDefiningModel; 14 15 @end 16 17 @implementation PlayingCardGameViewController 18 19 #define CORNER_FONT_STANDARD_HIGHT 180.0 20 #define CORNER_RADIUS 12.0 21 22 //让界面变得更好看的魔法 23 - (CGFloat)cornerScaleFactor:(CGFloat)height {return height / CORNER_FONT_STANDARD_HIGHT;} 24 - (CGFloat)cornerRadius:(CGFloat)height {return CORNER_RADIUS * [self cornerScaleFactor:height];} 25 26 - (void)viewDidLoad 27 { 28 //又是个让界面变得更好看的魔法 29 self.restartButton.layer.cornerRadius = [self cornerRadius:self.restartButton.bounds.size.height]; 30 self.gameModelSelectSegmented.layer.cornerRadius = [self cornerRadius:self.gameModelSelectSegmented.bounds.size.height * 3]; 31 32 [self.gameModelSelectSegmented addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];//target-action 33 34 _selfDefiningModel = 2;//default model 35 } 36 37 - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 38 { 39 if ([segue.identifier isEqualToString:@"show PlayingCardGameHistory"]) 40 { 41 if ([segue.destinationViewController isKindOfClass:[HistoryViewController class]]) 42 { 43 HistoryViewController *HVC = (HistoryViewController *)segue.destinationViewController; 44 HVC.history = self.game.gameStateHistory; 45 } 46 } 47 } 48 49 50 - (void) segmentAction:(UISegmentedControl *)Seg 51 { 52 if (self.gameModelSelectSegmented.selectedSegmentIndex == 2) 53 { 54 [self assertSelfDefiningModel:self.matchModelTextFiled.text]; 55 } 56 else 57 { 58 self.selfDefiningModel = self.gameModelSelectSegmented.selectedSegmentIndex + 2; 59 } 60 self.gameModelLable.text = [NSString stringWithFormat:@"game model:%lu",(unsigned long)self.selfDefiningModel]; 61 } 62 63 - (void) assertSelfDefiningModel:(NSString *)text 64 { 65 if ([self.matchModelTextFiled.text integerValue] < 2) 66 { 67 [[[UIAlertView alloc] initWithTitle:@"Wrong" message:@"game model at least 2" delegate:nil cancelButtonTitle:@"certain" otherButtonTitles:nil, nil] show]; 68 self.matchModelTextFiled.text = @""; 69 self.gameModelSelectSegmented.selectedSegmentIndex = 0; 70 } 71 else if ([self.matchModelTextFiled.text integerValue] > [self cardButtonsNumber]) 72 { 73 [[[UIAlertView alloc] initWithTitle:@"Wrong" message:@"beyond card max number" delegate:nil cancelButtonTitle:@"certain" otherButtonTitles:nil, nil] show]; 74 self.matchModelTextFiled.text = @""; 75 self.gameModelSelectSegmented.selectedSegmentIndex = 0; 76 } 77 else 78 { 79 self.selfDefiningModel = [self.matchModelTextFiled.text integerValue]; 80 } 81 } 82 83 - (Deck *)createDeck 84 { 85 return [[PlayingCardDeck alloc] init]; 86 } 87 88 - (IBAction)touchRestartButton 89 { 90 //恢复默认值 91 self.gameModelSelectSegmented.enabled = YES; 92 self.matchModelTextFiled.enabled = YES; 93 self.matchModelTextFiled.enabled = YES; 94 self.gameModelSelectSegmented.selectedSegmentIndex = 0; 95 self.selfDefiningModel = 2; 96 self.gameModelLable.text = [NSString stringWithFormat:@"game model:%d",_selfDefiningModel]; 97 self.matchModelTextFiled.text = nil; 98 99 self.game = nil;100 [self updateUIWithNotCreateGame];101 }102 103 - (IBAction)touchCardButton:(UIButton *)sender104 {105 //游戏开始后禁用模式选择功能106 self.gameModelSelectSegmented.enabled = NO;107 self.matchModelTextFiled.enabled = NO;108 self.matchModelTextFiled.enabled = NO;109 110 NSUInteger cardIndex = [self.cardButtons indexOfObject:sender];111 if(!self.game)112 {113 self.game = [[PlayingCardMatchingGame alloc] initWithCardCount:[self.cardButtons count]114 usingDeck:[self createDeck]];115 self.game.gameModel = self.selfDefiningModel;116 }117 [self.game chooseCardAtIndex:cardIndex];118 [self updateUI];119 }120 121 - (void) updateUIWithNotCreateGame122 {123 for (UIButton *cardButton in self.cardButtons)124 {125 [cardButton setTitle:@"" forState:UIControlStateNormal];126 [cardButton setBackgroundImage:[UIImage imageNamed:@"cardBack"] forState:UIControlStateNormal];127 cardButton.enabled = YES;128 }129 self.gameStateLable.text = @"State";130 self.scoreLable.text = @"Score:0";131 }132 133 - (void)updateUI134 {135 [super updateUI];136 self.gameStateLable.text = ((PlayingCardMatchingGame *)self.game).gameState;137 }138 139 - (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event140 {141 [self.view endEditing:YES];142 }143 144 @end
SetCardGameViewController
本类实现了SetCard匹配游戏，因为是UI层，因此使用了NSAttributeString来表示SetCard的内容，同样也实现了History功能
注意：由于SetCard牌面始终朝上，因此要在ViewDidLoad中初始化game
1 #import "ViewController.h"2 3 @interface SetCardGameViewController : ViewController4 5 @end
1 #import "SetCardGameViewController.h" 2 #import "SetCardMatchingGame.h" 3 #import "SetCardDeck.h" 4 #import "SetCard.h" 5 #import "HistoryViewController.h" 6 7 @interface SetCardGameViewController() 8 9 @property (weak, nonatomic) IBOutlet UILabel *gameStateLable; 10 @property (weak, nonatomic) IBOutlet UIButton *restartButton; 11 @property (nonatomic) NSUInteger selfDefiningModel; 12 @property (nonatomic,strong) NSDictionary *colorOfCard; 13 14 @end 15 16 @implementation SetCardGameViewController 17 18 #define CORNER_FONT_STANDARD_HIGHT 180.0 19 #define CORNER_RADIUS 12.0 20 21 //让界面变得更好看的魔法 22 - (CGFloat)cornerScaleFactor:(CGFloat)height {return height / CORNER_FONT_STANDARD_HIGHT;} 23 - (CGFloat)cornerRadius:(CGFloat)height {return CORNER_RADIUS * [self cornerScaleFactor:height];} 24 25 - (void)viewDidLoad 26 { 27 //又是个让界面变得更好看的魔法 28 self.restartButton.layer.cornerRadius = [self cornerRadius:self.restartButton.bounds.size.height]; 29 30 self.colorOfCard = @{@"red" : [UIColor redColor], @"green" : [UIColor greenColor], @"purple" : [UIColor purpleColor]}; 31 32 _selfDefiningModel = 3;//default model 33 34 if(!self.game) 35 { 36 self.game = [[SetCardMatchingGame alloc] initWithCardCount:[self.cardButtons count] 37 usingDeck:[self createDeck]]; 38 self.game.gameModel = self.selfDefiningModel; 39 } 40 [self updateUIWithNotCreateGame]; 41 } 42 43 - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 44 { 45 if ([segue.identifier isEqualToString:@"show SetCardGameHistory"]) 46 { 47 if ([segue.destinationViewController isKindOfClass:[HistoryViewController class]]) 48 { 49 HistoryViewController *HVC = (HistoryViewController *)segue.destinationViewController; 50 HVC.history = self.game.gameStateHistory; 51 } 52 } 53 } 54 55 56 - (Deck *)createDeck 57 { 58 return [[SetCardDeck alloc] init]; 59 } 60 - (IBAction)touchCardButtons:(UIButton *)sender 61 { 62 //游戏开始后禁用模式选择功能 63 NSUInteger cardIndex = [self.cardButtons indexOfObject:sender]; 64 if(!self.game) 65 { 66 self.game = [[SetCardMatchingGame alloc] initWithCardCount:[self.cardButtons count] 67 usingDeck:[self createDeck]]; 68 self.game.gameModel = self.selfDefiningModel; 69 } 70 [self.game chooseCardAtIndex:cardIndex]; 71 [self updateUI]; 72 } 73 74 - (IBAction)touchRestartButton:(UIButton *)sender 75 { 76 //恢复默认值 77 self.selfDefiningModel = 3; 78 self.game = nil; 79 if(!self.game) 80 { 81 self.game = [[SetCardMatchingGame alloc] initWithCardCount:[self.cardButtons count] 82 usingDeck:[self createDeck]]; 83 self.game.gameModel = self.selfDefiningModel; 84 } 85 [self updateUIWithNotCreateGame]; 86 } 87 88 - (void) updateUIWithNotCreateGame 89 { 90 for (UIButton *cardButton in self.cardButtons) 91 { 92 NSUInteger cardIndex = [self.cardButtons indexOfObject:cardButton]; 93 Card *card = [self.game cardAtIndex:cardIndex]; 94 [cardButton setAttributedTitle:[self attributeTitleForCard:card] forState:UIControlStateNormal]; 95 [cardButton setBackgroundImage:[UIImage imageNamed:@"cardFront"] forState:UIControlStateNormal]; 96 cardButton.enabled = YES; 97 } 98 self.gameStateLable.text = @"State"; 99 self.scoreLable.text = @"Score:0";100 }101 102 - (void)updateUI103 {104 for (UIButton *cardButton in self.cardButtons)105 {106 NSUInteger cardIndex = [self.cardButtons indexOfObject:cardButton];107 Card *card = [self.game cardAtIndex:cardIndex];108 [cardButton setAttributedTitle:[self attributeTitleForCard:card] forState:UIControlStateNormal];109 [cardButton setBackgroundImage:[self backgroundImageForCard:card] forState:UIControlStateNormal];110 cardButton.enabled = !card.isMacthed;111 }112 self.scoreLable.text = [NSString stringWithFormat:@"Score:%ld",(long)self.game.score];113 self.gameStateLable.text = ((SetCardMatchingGame *)self.game).gameState;114 }115 116 - (NSAttributedString *)attributeTitleForCard:(Card *)card117 {118 NSShadow *shadow1 = [[NSShadow alloc] init];119 shadow1.shadowColor = [UIColor grayColor];120 shadow1.shadowOffset = CGSizeMake(2.0f, 2.0f);121 122 NSShadow *shadow2 = [[NSShadow alloc] init];123 shadow2.shadowColor = [UIColor whiteColor];124 shadow2.shadowOffset = CGSizeMake(0.0F,0.0f);125 return [[NSAttributedString alloc] initWithString:((SetCard *)card).suit126 attributes:@{NSForegroundColorAttributeName : [self.colorOfCard valueForKey:((SetCard *)card).color],127 NSShadowAttributeName : ((SetCard *)card).shading ? shadow1 : shadow2,128 NSFontAttributeName : [UIFont boldSystemFontOfSize:10.0f]}];129 }130 131 - (UIImage *)backgroundImageForCard:(Card *)card132 {133 return card.chosen ? [UIImage imageNamed:@"setCardback"] : [UIImage imageNamed:@"cardFront"];134 }135 136 @end
d.history功能的实现
HistoryViewController
属性history用于接收父MVC传来的数据
1 #import <UIKit/UIKit.h>2 3 @interface HistoryViewController : UIViewController4 @property (strong, nonatomic) NSArray *history;5 @end
1 #import "HistoryViewController.h" 2 3 @interface HistoryViewController () 4 @property (weak, nonatomic) IBOutlet UITextView *HistoryTextView; 5 @end 6 7 @implementation HistoryViewController 8 9 - (void)viewDidLoad {10 [super viewDidLoad];11 // Do any additional setup after loading the view. 12 for (NSString *state in self.history)13 {14 self.HistoryTextView.text = [self.HistoryTextView.text stringByAppendingFormat:@"%@/n",state];15 }16 }17 @end
总结：本次作业提出的问题比解决的问题要多很多，作者只是极其简单的实现了作业的大致要求，仍然有许多问题没有解决，如Model的抽象化问题中原有的readonly属性在超类中可能变为了readwrite，是否会产生安全性问题，有没有更好的方法；Controller的抽象化中将许多原本隐藏在.m文件中的输出口放至超类的.h文件中，是否会造成子类对输出口的滥用，有没有更好的解决方案；仍然没有解决State显示内容超出屏幕空间的问题（太懒了=_=)；Setcard的state显示可以使用NSAttributeString（感兴趣可以试试）；同样SetCard中history的显示也可以使用NSAttributeString，此时可能要改变一些传值的内容（感兴趣去玩耍一下吧）；关于SetCard的游戏规则其实还不太完善，比如初始化后可能无适合匹配情况的判断（百度百科的游戏规则中是要再次添加三张牌，我在屏幕中尽可能多添加了几张纸牌来避免这种情况），以及游戏结束情况的判断，本次作业相当于只实现了setcard选择后的匹配计分规则（任重而道远。。。）。到此就是我大概能想到的值得改进的地方（感觉到提出的问题比解决的问题多了吧=_=），一次作业的内容不仅能复习到前面所学的内容，还是对个人学到知识融汇贯通的一次检验，各位加油，有任何问题欢迎讨论：）
作业源码地址：https://github.com/NSLogMeng/Stanford_iOS7_Study/commit/0bb1103ccb4293caa9dc3b12200ba9fb12a51170
课程视频地址：网易公开课：http://open.163.com/movie/2014/1/L/H/M9H7S9F1H_M9H801GLH.html
或者iTunes U搜索standford课程
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