UI, 关灯游戏的实现

游戏规则:

首先随机为每个按钮生成不同的状态(开灯或关灯), 然后点击按钮, 进行关灯; 其四周的灯, 如果是亮的, 那么这个灯将会关掉, 如果是关的, 那么该灯将会被打开, 直到所有的灯都被灭掉为止

#import "FootViewController.h"

//定义宏,表示按钮的边长

#define kSize 50

@interface FootViewController () {

//定义全局变量

NSInteger temp;

UIButton *button1;

UIButton *button2;

UIButton *button3;

UIButton *button4;

}

@end

@implementation FootViewController

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view.

self.view.backgroundColor = [UIColor yellowColor];

//双层for循环,生成25个按钮

for (NSInteger i = 1; i <= 5; i++) {

for (NSInteger j = 1; j <= 5; j++) {

UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];

//用于随机生成按钮的背景图片的判断

temp = 1;

button.frame = CGRectMake(i * 60 - 25, j * 60 + 50, kSize, kSize);

//当随机数为1时,背景图片为guan(关灯)图片,当为0(不为1)时,背景图片为open(开灯)图片

if (temp == arc4random() % 2) {

[button setBackgroundImage:[UIImage imageNamed:@"guan.jpg"] forState:UIControlStateNormal];

}else {

[button setBackgroundImage:[UIImage imageNamed:@"open.jpg"] forState:UIControlStateNormal];

}

//给每个按钮设置tag值,便于通过tag值找到按钮

button.tag = 10 * j + i;

//给按钮关联方法

[button addTarget:self action:@selector(press:) forControlEvents:UIControlEventTouchUpInside];

//将按钮加到父视图上,进行显示

[self.view addSubview:button];

//释放内存空间

[button release];

}

}

}

//按钮四周按钮的开灯状态变化

- (void)changeLight:(UIButton *)button {

NSInteger tag = button.tag;

//通过button的tag值,找到其上下左右的四个按钮

button1 = (UIButton *)[self.view viewWithTag:tag + 1];//右按钮

button2 = (UIButton *)[self.view viewWithTag:tag - 1];//左按钮

button3 = (UIButton *)[self.view viewWithTag:tag + 10];//上按钮

button4 = (UIButton *)[self.view viewWithTag:tag - 10];//下按钮

//判断按钮右边按钮的亮灯状态

if ([button1.currentBackgroundImage isEqual:[UIImage imageNamed:@"guan.jpg"]]) {

[button1 setBackgroundImage:[UIImage imageNamed:@"open.jpg"] forState:UIControlStateNormal];

}else {

[button1 setBackgroundImage:[UIImage imageNamed:@"guan.jpg"] forState:UIControlStateNormal];

}

//判断按钮左边按钮的亮灯状态

if ([button2.currentBackgroundImage isEqual:[UIImage imageNamed:@"guan.jpg"]]) {

[button2 setBackgroundImage:[UIImage imageNamed:@"open.jpg"] forState:UIControlStateNormal];

}else {

[button2 setBackgroundImage:[UIImage imageNamed:@"guan.jpg"] forState:UIControlStateNormal];

}

//判断按钮上边按钮的亮灯状态

if ([button3.currentBackgroundImage isEqual:[UIImage imageNamed:@"guan.jpg"]]) {

[button3 setBackgroundImage:[UIImage imageNamed:@"open.jpg"] forState:UIControlStateNormal];

}else {

[button3 setBackgroundImage:[UIImage imageNamed:@"guan.jpg"] forState:UIControlStateNormal];

}

//判断按钮下边按钮的亮灯状态

if ([button4.currentBackgroundImage isEqual:[UIImage imageNamed:@"guan.jpg"]]) {

[button4 setBackgroundImage:[UIImage imageNamed:@"open.jpg"] forState:UIControlStateNormal];

}else {

[button4 setBackgroundImage:[UIImage imageNamed:@"guan.jpg"] forState:UIControlStateNormal];

}

}

//button绑定的方法

- (void)press:(UIButton *)button {

if ([button.currentBackgroundImage isEqual:[UIImage imageNamed:@"guan.jpg"]]) {//按下的按钮是 关灯

//把按钮变为开灯

[button setBackgroundImage:[UIImage imageNamed:@"open.jpg"] forState:UIControlStateNormal];

[self changeLight:button];

} else {//按下的按钮是开灯

//把按钮变为关灯

[button setBackgroundImage:[UIImage imageNamed:@"guan.jpg"] forState:UIControlStateNormal];

[self changeLight:button];

}

}

@end

效果图