//简单制作一个关灯游戏

//点击某一个灯，它，包括它四周的灯一起变化，关了的亮，亮的关

//建一个分类，它继承与UIView

#import <UIKit/UIKit.h>

//声明一个方法

@interface UIView (Change)

-(void)change;

@end

//实现这个方法

#import "UIView+Change.h"

@implementation UIView (Change)

-(void)change

{

//红的变黑，黑的变红

if (self.backgroundColor==[UIColor redColor]) {

self.backgroundColor=[UIColor blackColor];

}

else

{

self.backgroundColor=[UIColor redColor];

}

}

@end

#import <UIKit/UIKit.h>

#import "UIView+Change.h"

@interface ViewController : UIViewController

//定义一个按钮控件的属性

@property (strong,nonatomic) UIButton *button;

//声明一个判断的方法

-(void)chose:(UIButton *)button;

@end

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

//循环产生按钮视图 j=5，代表横排五个，i=9 代表竖排9个

for (int i=1; i<=9; i++)

{

for (int j=1; j<=5; j++)

{

//Button的初始化

self.button = [UIButton buttonWithType:UIButtonTypeCustom];

self.button=[[UIButton alloc]initWithFrame:CGRectMake(19*j+(j-1)*60, 19.6*i+(i-1)*60, 60, 60)];

//将Button创建为圆角矩形

[self.button.layer setCornerRadius:10.0];

//给Button上初始颜色为红色，当成灯亮

self.button.backgroundColor=[UIColor redColor];

//给创建的每一个Button按钮视图赋一个初始tag值

self.button.tag=(i-1)*5+j;

self.button.selected=YES;

[self.view addSubview:self.button];

//当触发事件UIControlEventTouchDown发生时，调用方法chose:

[self.button addTarget:self action:@selector(chose:) forControlEvents:UIControlEventTouchDown];

}

}

}

//判断方法

-(void)chose:(UIButton *)button

{

self.button=button;

//将Button的tag值转化为int类型赋给num

int num=(int)self.button.tag;

//第num个Button变色

[[self.view viewWithTag:num] change];

//判断第num个Button周围有没有其他的Button，有调用change方法，变色

if ((num-1)>0&&((num%5)!=1)) {

[[self.view viewWithTag:(num-1)] change];

}

if ((num-5)>0) {

[[self.view viewWithTag:(num-5)] change];

}

if ((num+1)<=45&&((num%5)!=0)) {

[[self.view viewWithTag:(num+1)] change];

}

if ((num+5)<=45) {

[[self.view viewWithTag:(num+5)] change];

}

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end