UI01_UIButton

//
// ViewController.m
// UI01_UIButton
//
// Created by lanou on 16/1/14.
// Copyright © 2016年 lanou. All rights reserved.
//

import “ViewController.h”

@interface ViewController ()

@end

@implementation ViewController

• (void)viewDidLoad {
  [super viewDidLoad];

  //初始化一个按钮
  self.button = [UIButton buttonWithType:UIButtonTypeCustom];
  //指定按钮的大小
  _button.frame = CGRectMake(100, 100, 150, 60);
  //设置颜色
  _button.backgroundColor = [UIColor redColor];
  //设置文字
  [_button setTitle:@”1” forState:UIControlStateNormal];
  //点击高亮
  _button.showsTouchWhenHighlighted = YES;
  //添加到controller上
  [self.view addSubview:_button];
  //给按钮添加点击事件
  [_button addTarget:self action:@selector(youTouchMe) forControlEvents:UIControlEventTouchUpInside];
  //改控制器的背景色
  self.view.backgroundColor = [UIColor grayColor];

  //定时器
  [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(timeIsOver) userInfo:nil repeats:NO];

  //定时器控制0.1秒+1
  _time = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(upUp) userInfo:nil repeats:YES];

  // Do any additional setup after loading the view.
  }

-(void)upUp
{
_flag++;
[_button setTitle:[NSString stringWithFormat:@”%ld”,_flag] forState:UIControlStateNormal];
}

-(void)timeIsOver
{
//R G B
//随机一个0-255的数字
int red = arc4random()%256;
int green = arc4random()%256;
int blue = arc4random()%256;
//根据RGB赋颜色
self.view.backgroundColor = [UIColor colorWithRed:red/255.0 green:green/255.0 blue:blue/255.0 alpha:1];
}

//点击按钮之后就走这个方法
-(void)youTouchMe
{
//R G B
//随机一个0-255的数字
int red = arc4random()%256;
int green = arc4random()%256;
int blue = arc4random()%256;
//根据RGB赋颜色
self.view.backgroundColor = [UIColor colorWithRed:red/255.0 green:green/255.0 blue:blue/255.0 alpha:1];
//停止定时器
[_time invalidate];
_time = nil;
}

• (void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
  }

/*

pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/

@end