iOS 摇号

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//
//  ViewController.m
//  摇号
//
//  Created by 纪高飞 on 17/5/13.
//  Copyright © 2017年 纪高飞. All rights reserved.
//

#import "ViewController.h"
#define  kScreenW   [UIScreen mainScreen].bounds.size.width
#define  kScreenH   [UIScreen mainScreen].bounds.size.height
@interface ViewController ()
/**lab*/
@property (nonatomic,strong)  UILabel *textlab ;
/**数据源*/
@property (nonatomic,strong) NSMutableArray  * dataArray;
@property (nonatomic,strong) NSTimer *timer;
@end

@implementation ViewController

#pragma mark - 懒加载
- (NSMutableArray *)dataArray
{
    if (!_dataArray) {
        self.dataArray = [[NSMutableArray alloc]init];
    }
    return _dataArray;
}
- (void)viewDidLoad {
    [super viewDidLoad];

//    self.dataArray = @[@"张杰",@刘亦菲",@"赵丽颖",@"刘若英",@"张惠妹",@"范冰冰冰"].mutableCopy;
    
    UIButton *startBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    startBtn.frame = CGRectMake(50, 100,  kScreenW -100 ,30);
    startBtn.backgroundColor = [UIColor redColor];
    [startBtn setTitle:@"开始" forState:UIControlStateNormal];
    [startBtn addTarget:self action:@selector(startAction:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:startBtn];
    
    
    UIButton *stopBtn = [UIButton buttonWithType:UIButtonTypeCustom];
  stopBtn.frame = CGRectMake(50, 200,  kScreenW -100 ,30);
    stopBtn.backgroundColor = [UIColor orangeColor];
    [stopBtn setTitle:@"结束" forState:UIControlStateNormal];
    [stopBtn addTarget:self action:@selector(stopBtnAction:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:stopBtn];
    UILabel *title = [[UILabel alloc]initWithFrame:CGRectMake(10, 260,  100 ,30)];
    title.text = @"今日中奖:";
    [self.view addSubview:title];
    self.textlab.textAlignment = NSTextAlignmentCenter;
    _textlab.backgroundColor = [UIColor grayColor];
    [self.view addSubview:_textlab];
    self.textlab = [[UILabel alloc]initWithFrame:CGRectMake(120, 260,  kScreenW -240 ,30)];
    self.textlab.textColor = [UIColor redColor];
    self.textlab.textAlignment = NSTextAlignmentCenter;

    [self.view addSubview:_textlab];
    
   }

#pragma mark 点击事件
- (void)startAction:(UIButton *)sender
{
    [_timer invalidate];
    NSLog(@"开始");
    // 创建定时器
    self.timer = [NSTimer scheduledTimerWithTimeInterval:0.08 target:self selector:@selector(timerAction) userInfo:nil repeats:YES];
    
}

- (void)stopBtnAction:(UIButton *)sender
{
    NSLog(@"结束");
    
    [_timer invalidate];

}
- (void)timerAction{

    int  y =  0 + arc4random()%(100 - 0 + 1);
    self.textlab.text =[NSString stringWithFormat:@"%d",y];
    //    self.dataArray = @[@"张杰",@刘亦菲",@"赵丽颖",@"刘若英",@"张惠妹",@"范冰冰"].mutableCopy;
    //  self.textlab.text = self.dataArray[y];
}

@end