[非凡程序员]倒计时 uiimage uiDatePicker NSDate

//倒计时
@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];
[NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(jishi) userInfo:nil repeats:YES];
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}

-(void)jishi{
//转化成本地时间
NSDate *beginDate = [[NSDate alloc]init];
NSString *endtime=@"2015-11-14 00:00:00 +00";
NSDateFormatter *format = [[NSDateFormatter alloc]init];
[format setDateFormat:@"yyyy-MM-dd HH:mm:ss +hh"];

NSDate *endDate = [format dateFromString:endtime];
NSString *beg=[format stringFromDate:beginDate];
NSLog(@"%@,%@",beg,endDate);

_begin.text=beg;
NSMutableString *string = [[NSMutableString alloc]init];

NSTimeInterval timeDif = [endDate timeIntervalSince1970]-[beginDate timeIntervalSince1970];

int shi= timeDif/3600;
int fen= (timeDif-(shi*60*60))/60;
int miao=timeDif-(shi*60*60)-(fen*60);
[string appendString:[NSString stringWithFormat:@"%i-%i-%i",shi,fen,miao]];
//    NSLog(@"%@",string);
_countDown.text=string;
//    _countDown.text=string;

_end.text=[NSString stringWithFormat:@"%@",[format stringFromDate:endDate]];

}

//UIIMage
- (void)viewDidLoad {
[super viewDidLoad];
_i=20;
//图片实例化方法一：
UIImageView  * imageView = [ [ UIImageView alloc ] init ] ;

//图片实例化方法二：
UIImageView  * imageViewI = [ [ UIImageView alloc ] initWithFrame: CGRectMake ( 10, 10, 200, 200 ) ] ;

//设置ImageView的内容
imageViewI.image = [ UIImage imageNamed:@"0" ] ;

//图片实例化方法三：
UIImageView  * imageViewII = [ [ UIImageView alloc ] initWithImage : [ UIImage imageNamed : @"4" ] ] ;

//设置imageView的大小
imageViewII.frame = CGRectMake ( 180, 100, 100, 100 ) ;

//图片实例化方法四：(图片两个状态)
_imageViewIII = [ [ UIImageView alloc ] initWithImage : [ UIImage imageNamed:@"1" ] highlightedImage : [ UIImage imageNamed:@"2" ] ] ;
_imageViewIII.frame = CGRectMake ( 5,5, 100, 100 ) ;

//将图片添加到页面上
[ self.view addSubview:_imageViewIII ] ;

//添加按钮控制图片状态
UIButton  * button = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 80, 80, 180, 30 ) ] ;
[ button setTitle : @"高亮切换" forState : UIControlStateNormal ] ;
button.backgroundColor = [ UIColor redColor ] ;
[ button  addTarget : self action : @selector(gaoLiang) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];

// =========   关于图片的手势    ========

_imageViewIIII = [ [ UIImageView alloc ] initWithImage : [ UIImage imageNamed:@"4" ] ];

_imageViewIIII.frame = CGRectMake(10, 150, 100, 100);

_imageViewIIII.backgroundColor=[UIColor redColor];//可以给图片添加背景颜色明确image和imageView的差别

//将图片添加到页面上
[self.view addSubview:_imageViewIIII];

//图片支持交互
_imageViewIIII.userInteractionEnabled = YES;

//    定义手势
UITapGestureRecognizer *gestur = [ [ UITapGestureRecognizer alloc ]initWithTarget:self action:@selector(shouShi) ];

//    将图片添加手势
[_imageViewIIII addGestureRecognizer:gestur];

//  ===========  图片旋转  ============
_rotationImageView = [[ UIImageView alloc]initWithImage:[ UIImage imageNamed:@"0" ] ] ;
_rotationImageView.frame=CGRectMake(200, 200, 100, 100);
[self.view addSubview:_rotationImageView];

//添加按钮控制图片状态
UIButton  * buttonI = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 200, 150, 80, 30 ) ] ;
[ buttonI setTitle : @"图片旋转" forState : UIControlStateNormal ] ;
buttonI.backgroundColor = [ UIColor redColor ] ;
[ buttonI  addTarget : self action : @selector(xuanZhuan) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonI];

//  ===========  图片放缩  ============
_changeSizeImageView = [[ UIImageView alloc]initWithImage:[ UIImage imageNamed:@"2" ] ] ;
_changeSizeImageView.frame=CGRectMake(20, 300, 100, 100);
[self.view addSubview:_changeSizeImageView];

//添加按钮控制图片放大
UIButton  * buttonBig = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 110, 320, 80, 30 ) ] ;
[ buttonBig setTitle : @"图片放大" forState : UIControlStateNormal ] ;
buttonBig.backgroundColor = [ UIColor redColor ] ;
[ buttonBig  addTarget : self action : @selector(fangDa) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonBig];
//添加按钮控制图片缩小
UIButton  * buttonSmall = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 110, 360, 80, 30 ) ] ;
[ buttonSmall setTitle : @"图片缩小" forState : UIControlStateNormal ] ;
buttonSmall.backgroundColor = [ UIColor redColor ] ;
[ buttonSmall  addTarget : self action : @selector(suoXiao) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonSmall];

//======  利用Frame控制缩放  ======
_changeFrameImageView = [[ UIImageView alloc]initWithImage:[ UIImage imageNamed:@"5" ] ] ;
_changeFrameImageView.frame=CGRectMake(120, 430, 100, 100);
[self.view addSubview:_changeFrameImageView];

//添加按钮控制图片放大
UIButton  * frameBig = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 110, 600, 50, 30 ) ] ;
[ frameBig setTitle : @"放大" forState : UIControlStateNormal ] ;
frameBig.backgroundColor = [ UIColor redColor ] ;
[ frameBig  addTarget : self action : @selector(zengDa) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:frameBig];

//添加按钮控制图片缩小
UIButton  * frameSmall = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 220, 600,50, 30 ) ] ;
[ frameSmall setTitle : @"缩小" forState : UIControlStateNormal ] ;
frameSmall.backgroundColor = [ UIColor redColor ] ;
[ frameSmall  addTarget : self action : @selector(bianXiao) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:frameSmall];

//    _imageViewIII.center=CGPointZero;//设置图片中心位置，CGPointZero是原点（0，0）

//    [self.view bringSubviewToFront:imageViewI];//将控件移至最前方

//    _imageViewIIII.contentMode=UIViewContentModeCenter;

//    _imageViewIII.transform=CGAffineTransformMakeTranslation(100, 200);

}
//添加按钮控制图片放大回调方法
-(void)fangDa{
_changeSizeImageView.transform=CGAffineTransformMakeScale(2, 5);
}
//添加按钮控制图片缩小回调方法
-(void)suoXiao{
_changeSizeImageView.transform=CGAffineTransformMakeScale(0.2, 0.5);

}
//图片放大回调方法
-(void)zengDa{
CGRect bonus = _changeFrameImageView.bounds;//图片中心为中点
bonus.size.width += 30;
bonus.size.height += 30;
_changeFrameImageView.bounds = bonus;
}
//图片缩小回调方法
-(void)bianXiao{
CGRect frame =  _changeFrameImageView.frame;//图片左上角为中心
frame.size.height -= 30;
frame.size.width -= 30;
_changeFrameImageView.frame = frame;
}

//为切换高亮添加的方法
-(void)gaoLiang{
if (_imageViewIII.highlighted==YES) {
_imageViewIII.highlighted=NO;
}else{
_imageViewIII.highlighted=YES;
}
}
-(void)shouShi{
NSLog(@"图片手势方法。。。");
}
//点击图片旋转按钮调用的自定义方法，其中设置图片旋转多少
-(void)xuanZhuan{
_i+=20;
_rotationImageView.transform=CGAffineTransformMakeRotation(M_PI*_i/180);
//    这样的旋转是以图片中心为旋转中心的，旋转角度为：M_PI*？/180中？位置
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end

//DatePicker
(void)viewDidLoad {
[super viewDidLoad];

//    UIDatePicker 是一个控制器类，他是UIControl的子类，专门用于接受日期、时间和持续时长的输入。日期选取器的各列会按照指定的风格进行自动配置

//    UIDatePicker 依赖于 NSDate 类

_datePicker.minuteInterval=6;
//设置datePicker的样式
_datePicker.datePickerMode=UIDatePickerModeDate;
//    格式化一个字符串型的时间为NSDate类型
NSString *string=@"2012-12-22";
NSDateFormatter *formatter=[[NSDateFormatter alloc]init];
[formatter setDateFormat:@"yyyy-MM-dd"];
NSDate *date=[formatter dateFromString:string];
//    设置datePicker的最小时间
_datePicker.minimumDate=date;
//对datePicker添加事件
[_datePicker addTarget:self action:@selector(dateChange:) forControlEvents:UIControlEventValueChanged];

}
//当datePicker值发生改变会回调的自定义方法
-(void)dateChange:(UIDatePicker *)sender{
NSDate *date=_datePicker.date;
NSLog(@"%@",date);
}

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

//NSDate
// insert code here...
NSLog(@"Hello, World!");
//获取当前时间的方法有两个
NSDate * date = [ [ NSDate alloc ] init ] ;

NSDate  * dateI = [ NSDate date ] ;
//        将NSDate转化为NSString

NSDateFormatter  * dateFormatter = [  [ NSDateFormatter alloc ]init ] ;

[ dateFormatter setDateFormat : @"yyyy-MM-dd HH:mm:ss" ] ;
NSString  * nowTime = [ [ NSString alloc ] init ] ;
nowTime = [ dateFormatter stringFromDate:dateI ] ;
NSLog ( @" ==== %@ " , nowTime );

NSLog ( @" %@ ---- %@ " , date , dateI ) ;
//        将字符串转化为date
NSString  * string = @"2013-12-25 12:23:57" ;
NSDate  * dateIII = [ dateFormatter dateFromString:string ] ;
NSLog ( @"%@" , dateIII ) ;
}
return 0;
}