ioc开发学习 --简易计时器 （基于iPhone5屏幕尺寸开发）

//
//  ViewController.m
//  MiaoBiao
//
//  Created by Ibokan on 15/8/18.
//  Copyright (c) 2015年 Crazy凡. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()
{
    int _alltime;
}
@property(nonatomic,strong)UIColor * EnabledColor;//定义全局可按按钮颜色
@property(nonatomic,strong)UILabel *label;//时间显示label
@property(nonatomic,strong)UIButton *buttonStart;//开始按钮
@property(nonatomic,strong)UIButton *buttonPause;//暂停按钮
@property(nonatomic,strong)UIButton *buttonClear;//清零
@property(nonatomic,strong)NSTimer *timer;//计时器
@property(nonatomic,strong)UILabel *labelinfo;//作者信息

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    _EnabledColor = [UIColor colorWithRed:20/255.0 green:198/255.0 blue:233/255.0 alpha:1]; //初始化全局颜色
    
    
    //初始换显示label
    self.label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 320, 200)];
    self.label.backgroundColor = _EnabledColor;
    self.label.text = @"00:00:00";
    self.label.font = [UIFont fontWithName:@"Helvetica" size:50];
    self.label.textColor = [UIColor whiteColor];
    self.label.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:self.label];
    
    //初始化开始按钮
    self.buttonStart = [[UIButton alloc]initWithFrame:CGRectMake(0, 210, 155, 150)];
    [self.buttonStart setTitle:@"Start" forState:UIControlStateNormal];
    self.buttonStart.backgroundColor = _EnabledColor;
    [self.buttonStart setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [self.view addSubview:self.buttonStart];
    [self.buttonStart addTarget:self action:@selector(start) forControlEvents:UIControlEventTouchUpInside];
    
    //初始化暂停按钮
    self.buttonPause = [[UIButton alloc]initWithFrame:CGRectMake(165, 210, 155, 150)];
    [self.buttonPause setTitle:@"Pause" forState:UIControlStateNormal];
    self.buttonPause.backgroundColor = _EnabledColor;
    [self.buttonPause setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [self.view addSubview:self.buttonPause];
    [self.buttonPause addTarget:self action:@selector(pause) forControlEvents:UIControlEventTouchUpInside];

    //初始化清除按钮
    self.buttonClear = [[UIButton alloc]initWithFrame:CGRectMake(0, 370, 320, 150)];
    [self.buttonClear setTitle:@"Clear" forState:UIControlStateNormal];
    self.buttonClear.backgroundColor = _EnabledColor;
    [self.buttonClear setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [self.view addSubview:self.buttonClear];
    [self.buttonClear addTarget:self action:@selector(clear) forControlEvents:UIControlEventTouchUpInside];

    //初始化信息显示label
    self.labelinfo = [[UILabel alloc]initWithFrame:CGRectMake(0, 530, 320, 40)];
    self.labelinfo.backgroundColor = _EnabledColor;
    self.labelinfo.text = @"Developed by Crazy凡";
    self.labelinfo.textColor = [UIColor whiteColor];
    self.labelinfo.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:self.labelinfo];
    
    [self clear];//调用clear方法为组件初始化
}

- (void)start
{
   
    [self.buttonStart setTitle:@"Start" forState:UIControlStateNormal];//改变开始按钮显示字符（为暂停后初始化做准备）
    [self startUnenabled];
    [self pauseEnabled];
    [self clearEnabled];
    
     //timer 初始化 哪里需要哪里调用，
    self.timer = [NSTimer scheduledTimerWithTimeInterval:0.01 target:self selector:@selector(add) userInfo:nil repeats:YES];


}

- (void)pause
{
    [self.buttonStart setTitle:@"Continue" forState:UIControlStateNormal];//改变开始按钮显示字符
    [self.timer invalidate];
    [self startEnabled];
    [self pauseUnenabled];
}

- (void)clear
{
    _alltime = 0;
//    _millisecond = 0;
//    _second = 0;
//    _minute = 0;
    [self.timer invalidate];
    self.label.text = @"00:00:00";
    [self.buttonStart setTitle:@"Start" forState:UIControlStateNormal];
    [self startEnabled];
    [self pauseUnenabled];
    [self clearUnenabled];
}
- (void)add
{
    _alltime++;
    self.label.text = [[NSString alloc]initWithFormat:@"%02d:%02d:%02d",_alltime/6000,_alltime%6000/100,_alltime%100];
    //self.label.text = [[[NSString alloc]initWithFormat:@"%02d:%02d:%02d",_alltime/6000,_alltime%6000/100,_alltime%100] stringByAppendingString:[[NSString alloc]initWithFormat:@"%@",[[NSDate alloc]init] ]];
    
}

//以下是按钮可用性控制方法
- (void)startEnabled
{
    self.buttonStart.enabled = true;
    self.buttonStart.backgroundColor = _EnabledColor;
}
- (void)startUnenabled
{
    self.buttonStart.enabled = false;
    self.buttonStart.backgroundColor = [UIColor darkGrayColor];

}
- (void)pauseEnabled
{
    self.buttonPause.enabled = true;
    self.buttonPause.backgroundColor = _EnabledColor;
}
- (void)pauseUnenabled
{
    self.buttonPause.enabled = false;
    self.buttonPause.backgroundColor = [UIColor darkGrayColor];
}
- (void)clearEnabled
{
    self.buttonClear.enabled = true;
    self.buttonClear.backgroundColor = _EnabledColor;
}
- (void)clearUnenabled
{
    self.buttonClear.enabled = false;
    self.buttonClear.backgroundColor = [UIColor darkGrayColor];
}


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

@end