ios学习记录 day28 UI 6 关灯

MainViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    TouchView * backView = [[TouchView alloc] initWithFrame:CGRectMake(0, 20, 320, 450)];
    [backView setBackgroundColor:[UIColor lightGrayColor]];
    [self.view addSubview:backView];
    [backView release];
      
}

TouchView.m

- (void)dealloc
{
    [super dealloc];
}
- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        [self createbutton];
    }
    return self;
}


- (void)createbutton
{
    
    for (int i = 0; i < 25; i++) {
        //循环 5行5列 15 70 起始button和backview的距离
        CGFloat x = i % 5 * 60 + 15;
        CGFloat y = i / 5 * 60 + 70;
        //设置button的坐标大小
        UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];
        [button setFrame:CGRectMake(x, y, 50, 50)];
        //button的tag值1~25 不能为0! 通过tag值判断按钮的边界
        button.tag = i + 1;
        //为button添加点击事件
        [button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
        
        //button的selected是个BOOL类型的值
        //随机产生0和1 1的时候令selected为真 0时为假 这样程序开始的时候按钮的背景图片就是随机的
        if (arc4random()%2) {
            [button setSelected:true];
        }else{
            [button setSelected:false];
        }
        //选中按钮时背景图片on.png 正常是off.png
        [button setBackgroundImage:[UIImage imageNamed:@"on.png"] forState:UIControlStateSelected];
        [button setBackgroundImage:[UIImage imageNamed:@"off.png"] forState:UIControlStateNormal];
        
        [self addSubview:button];
    }
}

- (void)buttonAction:(UIButton *)sender
{
    //点击按钮时 先让按钮自身调用变换背景的方法
    [self changeColor:sender];
    //if判断游戏按钮的四个边
    //除了最左边 其它按钮点击的时候其左边的按钮调用变换背景图片方法
    if (!(sender.tag % 5 == 1)) {
        UIButton *button1 = (UIButton *)[self viewWithTag:sender.tag - 1];
        [self changeColor:button1];
    }
    //除了最上边 其它按钮点击的时候其上边的按钮调用变换背景图片方法
    if (!((sender.tag - 1) / 5 == 0)) {
        UIButton *button = (UIButton *)[self viewWithTag:sender.tag - 5];
        [self changeColor:button];
    }
    //除了最右边 其它按钮点击的时候其右边的按钮调用变换背景图片方法
    if (!(sender.tag % 5 == 0)) {
        UIButton *button = (UIButton *)[self viewWithTag:sender.tag + 1];
        [self changeColor:button];
    }
    //除了最下边 其它按钮点击的时候其下边的按钮调用变换背景图片方法
    if (!(sender.tag > 20)) {
        UIButton *button = (UIButton *)[self viewWithTag:sender.tag + 5];
        [self changeColor:button];
    }
    
}

//变换背景
- (void)changeColor:(UIButton *)sender
{
    //改变按钮selected的BOOL就相当于改变了按钮的背景图片
    sender.selected = !sender.selected;
    
//    //按钮是色块的时候 点击按钮时直接改色就行
//    if (sender.backgroundColor == [UIColor greenColor]) {
//        sender.backgroundColor = [UIColor whiteColor];
//    }else{
//        sender.backgroundColor = [UIColor greenColor];
//    }
}