UI拓展练习1----打地鼠

  //打地鼠核心代码:
  1 #import "ViewController.h"
  2 #define Krandom arc4random()%(115-100+1)+100
  3 @interface ViewController ()
  4 {
  5     NSInteger _n; //记录当前的Krandom值
  6     CGFloat _grade;//记录点击中的次数
  7     NSInteger _counter;//记录循环次数
  8 }
  9 
 10 
 11 @property(nonatomic, retain)UIButton *but;
 12 @property(nonatomic, retain)UIButton *but1;
 13 @property(nonatomic, retain)NSTimer *timer;
 14 @property(nonatomic, retain)UILabel *textCJ;
 15 
 16 
 17 @end
 18 
 19 @implementation ViewController
 20 
 21 - (void)viewDidLoad {
 22     [super viewDidLoad];
 23     _grade = 0;
 24     _counter = 0;
 25     [self loadButton];
 26     [self star];
 27     [self stop];
 28     
 29 }
 30 
 31 //第一步 完成基本布局(位置大小背景色,及相应点击事件)--------------------------------------
 32 //地鼠button布局 和 分数显示初始化
 33 -(void)loadButton
 34 {
 35     NSInteger n = 100;
 36     //用循环方式创建button按钮  4*4方格
 37     for (int i = 0 ; i < 4; i++) {
 38         for (int j = 0 ; j <4 ; j++ ) {
 39             //设置按钮类型
 40             _but = [UIButton buttonWithType:UIButtonTypeCustom];
 41             //用循环动态确定按钮位置  前后左右的间距要把握好
 42         _but.frame = CGRectMake(i * self.view.frame.size.width/4 +10 , j * self.view.frame.size.width/4 + 20 , self.view.frame.size.width/4 - 20 , 50);
 43             //添加按钮
 44             [self.view addSubview:_but];
 45             //设置按钮背景色
 46             [_but setBackgroundImage:[UIImage imageNamed:@"3"] forState:UIControlStateNormal];
 47             //设置按钮tag值
 48             [_but setTag:n];
 49             n++;
 50         }
 51         _textCJ = [[UILabel alloc] initWithFrame:CGRectMake(140, 400, 100, 40)];
 52         _textCJ.backgroundColor = [UIColor yellowColor];
 53         
 54         [self.view addSubview:_textCJ];
 55         
 56         NSString *str = [[NSString alloc] initWithFormat:@"%2.f",_grade];
 57         
 58         _textCJ.text = str;
 59     }
 60 }
 61 
 62 //开始按钮 与 计时器timmer初始化
 63 -(void)star
 64 {
 65     _but1 = [[UIButton alloc] initWithFrame:CGRectMake(30, self.view.frame.size.height - 30 , self.view.frame.size.width/2 - 60 , 30)];
 66     _but1.backgroundColor = [UIColor greenColor];
 67     //添加按钮
 68     [self.view addSubview:_but1];
 69     [_but1 setTitle:@"开始" forState:UIControlStateNormal];
 70     //添加按钮点击事件
 71     [_but1 addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];
 72     //计时器
 73     _timer = [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(paint:) userInfo:nil repeats:YES];
 74 }
 75 //结束按钮
 76 -(void)stop
 77 {
 78     UIButton *but = [UIButton buttonWithType:UIButtonTypeCustom];
 79     but.frame = CGRectMake(self.view.frame.size.width/2 + 30, self.view.frame.size.height - 30, self.view.frame.size.width/2 - 60 , 30);
 80     but.backgroundColor = [UIColor redColor];
 81     [but setTitle:@"结束" forState:UIControlStateNormal];
 82     
 83     [but addTarget:self action:@selector(ting:) forControlEvents:UIControlEventTouchUpInside];
 84     [self.view addSubview:but];
 85 }
 86 
 87 
 88 //第二步,处理按钮点击事件--------------------------------------
 89 
 90 //结束按钮的点击事件(1.按钮背景色设置为最初状态  2.计算成绩  3. )
 91 -(void)ting:(UIButton *)butt
 92 {
 93     [_timer invalidate];  //停止计时器,释放计时器
 94     
 95     //同时通过循环形式,将背景色变为最初状态
 96     for (int i = 100 ; i < 116 ; i ++ ) {
 97         //用tag值,找button
 98         butt = (UIButton *)[self.view viewWithTag:i];
 99         [butt setBackgroundImage:[UIImage imageNamed:@"3"] forState:UIControlStateNormal];
100     }
101    
102     //计算出成绩  ,并在label上显示
103     _grade = _grade/50 * 100; //地鼠会出现50次,求出百分制成绩
104     //将NSInteger类型的成绩转换为字符串类型
105     NSString *str = [[NSString alloc] initWithFormat:@"%.2f",_grade];
106     _textCJ.text = str; //将字符串类型的成绩赋给显示label
107     
108     _grade = 0; //重置成绩    _grade为点击的次数
109     //成绩重置为0时,重新开始计数
110     _timer = [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(paint:) userInfo:nil repeats:YES];
111 
112 }
113 
114 //触发计时器是执行的事件
115 - (void)paint:(UIButton *)bt//计时器触发事件
116 {
117     for (int i = 100;i < 116;i++)
118     {
119         _but = (UIButton *)[self.view viewWithTag:i];
120         [_but setBackgroundImage:[UIImage imageNamed:@"3"] forState:UIControlStateNormal];
121     }
122     
123     //记录当前tag值  让tag值的出现成为随机事件
124     _n = Krandom;//随机事件宏定义Krandom
125     
126     bt = (UIButton *)[self.view viewWithTag:_n];//找出随机tag值的button位置
127     
128     //找出随机tag值的button位置后,为其添加新的背景图片
129     [bt setBackgroundImage:[UIImage imageNamed:@"4.jpg"] forState:UIControlStateNormal];
130     
131     //按钮点击事件
132     [bt addTarget:self action:@selector(selector:) forControlEvents:UIControlEventTouchUpInside];
133 
134     if (_counter >= 50)//每一次触发计数一次,若果触发50次就结束计时器,跳出循环
135     {
136         _counter = 0;//重置计数
137         //并触发停止事件
138         [self ting:bt];
139     }
140     
141     _counter ++;//计数累加
142     //NSLog(@"this button tag is %ld",bt.tag);
143 }
144 
145 
146 //击打地鼠的点击事件
147 - (void)selector:(UIButton *)sender
148 {
149     if (sender.tag == _n)//判断是否所击打位置是当前显示地鼠位置
150     {
151         [sender setBackgroundImage:[UIImage imageNamed:@"5"] forState:UIControlStateNormal];
152         
153         _grade++;
154     }
155 }
156 
157 //计时器触发事件
158 //开始按钮点击事件,将计时器添加到NSRunloop循环中
159 - (void)click
160 {
161     [[NSRunLoop currentRunLoop] addTimer:_timer forMode:NSDefaultRunLoopMode];
162 }