就是点一下灯 它本身和周围4盏灯会变色

ViewController.m文件

#import "ViewController.h"
#import "UIView+change.h"
@interface ViewController ()
@property(assign,nonatomic)int totalColums;@property(assign,nonatomic)NSInteger tag;
@property(strong,nonatomic)UIButton *btn;
@end
@implementation ViewController- (void)viewDidLoad {
    [super viewDidLoad];
    CGFloat height=;
    CGFloat width=;
    self.view.tag=;
    self.totalColums=;    CGFloat marginX=(self.view.frame.size.width-width*self.totalColums)/(self.totalColums+);
    CGFloat marginY=;
    for (int i=; i<; i++) {
        int row=i/self.totalColums;
        int col=i%self.totalColums;
        CGFloat appX=marginX+col*(width+marginX);
        CGFloat appY=marginY+row*(height+marginY);
        UIButton *btn=[[UIButton alloc]initWithFrame:CGRectMake(appX, appY, width, height)];
        btn.backgroundColor=[UIColor redColor];
        [btn addTarget:self action:@selector(onClick:) forControlEvents:UIControlEventTouchDown];
        btn.tag=i;
        [self.view addSubview:btn];
    }}
/**
 *  点击事件
 *
 *
 */
-(void)onClick:(UIButton *)btn{
    [btn change];
    self.btn=btn;
    self.tag=btn.tag;
    [self lie];
    [self sigiao];
    [self hang];
    [self qita];
}
/**
 *  最左边一列和最右边一列
 */
-(void)lie{    if ((self.tag%self.totalColums==||self.tag%self.totalColums==)&&(self.tag/self.totalColums!=&&self.tag/self.totalColums!=)) {
        [[self.view viewWithTag:self.tag+self.totalColums] change];
        [[self.view viewWithTag:self.tag-self.totalColums] change];
        if (self.tag%self.totalColums==) {
            [[self.view viewWithTag:self.tag+] change];
        }else if(self.tag%self.totalColums==){
            [[self.view viewWithTag:self.tag-] change];
        }
    }
}
/**
 *  最上面一行和最下面一行
 */-(void)hang{    if ((self.tag/self.totalColums==||self.tag/self.totalColums==)&&(self.tag%self.totalColums!=&&self.tag%self.totalColums!=)) {
        [[self.view viewWithTag:self.tag-] change];
        [[self.view viewWithTag:self.tag+] change];
        if (self.tag/self.totalColums==) {
            [[self.view viewWithTag:self.tag+self.totalColums] change];
        }else if(self.tag/self.totalColums==){
            [[self.view viewWithTag:self.tag-self.totalColums] change];
        }
    }}
/**
 *  四个角
 */
-(void)sigiao{    if (self.tag==) {
        [[self.view viewWithTag:self.tag+] change];
        [[self.view viewWithTag:self.tag+self.totalColums] change];
    }else if (self.tag==){
        [[self.view viewWithTag:self.tag-] change];
        [[self.view viewWithTag:self.tag+self.totalColums] change];
    }else if(self.tag==-self.totalColums){
        [[self.view viewWithTag:self.tag+] change];
        [[self.view viewWithTag:self.tag-self.totalColums] change];
    }else if(self.tag==){
        [[self.view viewWithTag:self.tag-] change];
        [[self.view viewWithTag:self.tag-self.totalColums] change];
    }
}
/**
 *  其他的
 */
-(void)qita{    if (self.tag/self.totalColums!=&&self.tag/self.totalColums!=&&self.tag%self.totalColums!=&&self.tag%self.totalColums!=) {
        [[self.view viewWithTag:self.tag-self.totalColums]change];
        [[self.view viewWithTag:self.tag-]change];
        [[self.view viewWithTag:self.tag+self.totalColums]change];
        [[self.view viewWithTag:self.tag+] change];
    }
}- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}@end

#import "ViewController.h"
#import "UIView+change.h"
@interface ViewController ()
@property(assign,nonatomic)int totalColums;@property(assign,nonatomic)NSInteger tag;
@property(strong,nonatomic)UIButton *btn;
@end
@implementation ViewController- (void)viewDidLoad {
    [super viewDidLoad];
    CGFloat height=;
    CGFloat width=;
    self.view.tag=;
    self.totalColums=;    CGFloat marginX=(self.view.frame.size.width-width*self.totalColums)/(self.totalColums+);
    CGFloat marginY=;
    for (int i=; i<; i++) {
        int row=i/self.totalColums;
        int col=i%self.totalColums;
        CGFloat appX=marginX+col*(width+marginX);
        CGFloat appY=marginY+row*(height+marginY);
        UIButton *btn=[[UIButton alloc]initWithFrame:CGRectMake(appX, appY, width, height)];
        btn.backgroundColor=[UIColor redColor];
        [btn addTarget:self action:@selector(onClick:) forControlEvents:UIControlEventTouchDown];
        btn.tag=i;
        [self.view addSubview:btn];
    }}
/**
 *  点击事件
 *
 *
 */
-(void)onClick:(UIButton *)btn{
    [btn change];
    self.btn=btn;
    self.tag=btn.tag;
    [self lie];
    [self sigiao];
    [self hang];
    [self qita];
}
/**
 *  最左边一列和最右边一列
 */
-(void)lie{    if ((self.tag%self.totalColums==||self.tag%self.totalColums==)&&(self.tag/self.totalColums!=&&self.tag/self.totalColums!=)) {
        [[self.view viewWithTag:self.tag+self.totalColums] change];
        [[self.view viewWithTag:self.tag-self.totalColums] change];
        if (self.tag%self.totalColums==) {
            [[self.view viewWithTag:self.tag+] change];
        }else if(self.tag%self.totalColums==){
            [[self.view viewWithTag:self.tag-] change];
        }
    }
}
/**
 *  最上面一行和最下面一行
 */-(void)hang{    if ((self.tag/self.totalColums==||self.tag/self.totalColums==)&&(self.tag%self.totalColums!=&&self.tag%self.totalColums!=)) {
        [[self.view viewWithTag:self.tag-] change];
        [[self.view viewWithTag:self.tag+] change];
        if (self.tag/self.totalColums==) {
            [[self.view viewWithTag:self.tag+self.totalColums] change];
        }else if(self.tag/self.totalColums==){
            [[self.view viewWithTag:self.tag-self.totalColums] change];
        }
    }}
/**
 *  四个角
 */
-(void)sigiao{    if (self.tag==) {
        [[self.view viewWithTag:self.tag+] change];
        [[self.view viewWithTag:self.tag+self.totalColums] change];
    }else if (self.tag==){
        [[self.view viewWithTag:self.tag-] change];
        [[self.view viewWithTag:self.tag+self.totalColums] change];
    }else if(self.tag==-self.totalColums){
        [[self.view viewWithTag:self.tag+] change];
        [[self.view viewWithTag:self.tag-self.totalColums] change];
    }else if(self.tag==){
        [[self.view viewWithTag:self.tag-] change];
        [[self.view viewWithTag:self.tag-self.totalColums] change];
    }
}
/**
 *  其他的
 */
-(void)qita{    if (self.tag/self.totalColums!=&&self.tag/self.totalColums!=&&self.tag%self.totalColums!=&&self.tag%self.totalColums!=) {
        [[self.view viewWithTag:self.tag-self.totalColums]change];
        [[self.view viewWithTag:self.tag-]change];
        [[self.view viewWithTag:self.tag+self.totalColums]change];
        [[self.view viewWithTag:self.tag+] change];
    }
}- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}@end

类目文件UIView+change.h

#import <UIKit/UIKit.h>@interface UIView (change)
/**
 *  变颜色
 */
-(void)change;
@end

UIView+change.m

#import "UIView+change.h"@implementation UIView (change)
-(void)change{
    if (self.backgroundColor==[UIColor redColor]) {
        self.backgroundColor=[UIColor blueColor];
    }else{
        self.backgroundColor=[UIColor redColor];
    }
}
@end

运行效果