IOS簡單關燈小遊戲

                           在AppDelegate.m文件中添加視圖控制器
#import "AppDelegate.h"
#import "RootViewController.h"
@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    
    RootViewController *rootVC = [[RootViewController alloc]init];
    
    self.window.rootViewController = rootVC;
    
    [self.window makeKeyAndVisible];
    return YES;
}

           在RootViewController.m中實現  RootViewController 繼承於UIViewController
- (void)viewDidLoad
{
    [super viewDidLoad];
    
    UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 300)];
    [self.view addSubview:view];
    CGFloat x,y;
    x=0,y=0;
    for (int i=0; i<5; i++) {   
        x=0;  //每次初始化x
        for (int j=0; j<5; j++) {
            UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
            button.frame = CGRectMake(x, y, 50, 50);//
            button.backgroundColor = [UIColor grayColor];
            button.layer.contentsScale=4;
            button.layer.cornerRadius=14;
            [button addTarget:self action:@selector(createbutton:) forControlEvents:UIControlEventTouchUpInside];
            button.tag = 10*(i+1)+j+1; //行每次+1,列+10
            //NSLog(@"%ld",(long)button.tag);
            [view addSubview:button];
            x+=50;
        }
        y+=50;
    }
}
- (void)createbutton:(UIButton *)selectedButton
{
 
//    NSLog(@"%ld",(long)selectedButton.tag);
    //顏色調換
    if (selectedButton.backgroundColor==[UIColor grayColor]) {
        selectedButton.backgroundColor = [UIColor yellowColor];
    } else{
        selectedButton.backgroundColor = [UIColor grayColor];
    }
    //點擊的button上下左右取反
    UIButton *up=(UIButton*)[[self.view superview]viewWithTag:selectedButton.tag-10];
    if (up.backgroundColor==[UIColor grayColor]) {
        up.backgroundColor = [UIColor yellowColor];
    } else{
        up.backgroundColor = [UIColor grayColor];
    }
    
    UIButton *down=(UIButton*)[[self.view superview]viewWithTag:selectedButton.tag+10];
    if (down.backgroundColor==[UIColor grayColor]) {
        down.backgroundColor = [UIColor yellowColor];
    } else{
        down.backgroundColor = [UIColor grayColor];
    }
    
    UIButton *left=(UIButton*)[[self.view superview]viewWithTag:selectedButton.tag-1];
    if (left.backgroundColor==[UIColor grayColor]) {
        left.backgroundColor = [UIColor yellowColor];
    } else{
        left.backgroundColor = [UIColor grayColor];
    }
    
    UIButton *right=(UIButton*)[[self.view superview]viewWithTag:selectedButton.tag+1];
    if (right.backgroundColor==[UIColor grayColor]) {
        right.backgroundColor = [UIColor yellowColor];
    } else{
        right.backgroundColor = [UIColor grayColor];
    }