#import "ViewController.h"
@interface ViewController ()
@property (strong,nonatomic) NSCalendar *calender1;
@property (strong,nonatomic) NSCalendar *calender2;
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)tapBtn1:(id)sender
{
self.calender1 = [NSCalendar currentCalendar];
self.calender2 = [NSCalendar autoupdatingCurrentCalendar];
NSLog(@"%@",self.calender1.calendarIdentifier);
NSLog(@"%@",self.calender2.calendarIdentifier);
}
- (IBAction)tapBtn2:(id)sender
{
NSLog(@"%@",self.calender1.calendarIdentifier);
NSLog(@"%@",self.calender2.calendarIdentifier);
}
//根据提供的日历标示符初始化
- (IBAction)tapBtn3:(id)sender
{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSChineseCalendar];
NSLog(@"%@",calendar.calendarIdentifier);
}
//设置本地化信息
- (IBAction)tapBtn4:(id)sender
{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSLocale *locale = [[NSLocale alloc]initWithLocaleIdentifier:@"zh_CN"];
[calendar setLocale:locale];
NSLog(@"%@",calendar.locale.localeIdentifier);
}
//设置时区信息
- (IBAction)tapBtn5:(id)sender
{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
[calendar setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"HKT"]];
NSLog(@"%@",calendar.timeZone);
}
//设置每周的第一天从星期几开始
- (IBAction)tapBtn6:(id)sender
{
NSCalendar *calendar = [NSCalendar currentCalendar];
[calendar setFirstWeekday:3];
NSLog(@"%lu",(unsigned long)calendar.firstWeekday);
}
//NSCalendar对象的 - (NSDateComponents *)components:(NSUInteger)unitFlags fromDate:(NSDate *)date
//取得一个NSDate对象的1个或多个部分，用NSDateComponents来封装
//需要注意的是，只有明确指定了unitFlags，NSDateComponents相应的那一部分才有值。
- (IBAction)tapBtn7:(id)sender
{
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDate *date = [NSDate date];
NSDateComponents *compt = [calendar components:(NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit) fromDate:date];
NSLog(@"%ld,%@",(long)[compt year],date);
NSLog(@"%ld,%@",(long)[compt month],date);
NSLog(@"%ld,%@",(long)[compt day],date);
}
//NSCalendar对象的 - (NSDateComponents *)components:(NSUInteger)unitFlags fromDate:(NSDate *)startingDate toDate:(NSDate *)resultDate options : (NSUInteger)opts
//
//取得两个NSDate对象的时间间隔，用NSDateComponents来封装
- (IBAction)tapBtn8:(id)sender
{
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDate *date = [NSDate date];
NSDate *date2 = [NSDate dateWithTimeInterval:5*60*60+75 sinceDate:date];
NSDateComponents *compt = [calendar components:(NSMinuteCalendarUnit|NSSecondCalendarUnit) fromDate:date toDate:date2 options:0];
NSLog(@"%ld",(long)[compt minute]);
NSLog(@"%ld",(long)[compt second]);
}
//NSCalendar对象的 - (NSDate *)dateFromComponents:(NSDateComponents *)comps
//根据NSDateComponents对象得到一个NSDate对象
- (IBAction)tapBtn9:(id)sender
{
NSDateComponents *compt = [[NSDateComponents alloc] init];
[compt setYear:2012];
[compt setMonth:5];
[compt setDay:11];
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDate *date = [calendar dateFromComponents:compt];
//得到本地时间，避免时区问题
//获取当前时区
NSTimeZone *zone = [NSTimeZone systemTimeZone];
//以秒为单位返回当前应用程序与世界标准时间（格林尼治时间）的时差
NSInteger interval = [zone secondsFromGMTForDate:date];
//补充时差后为当前时间
NSDate *localeDate = [date dateByAddingTimeInterval:interval];
NSLog(@"%ld",(long)interval);
NSLog(@"%@",localeDate);
}
@end
来源：oschina
链接：https://my.oschina.net/u/2547800/blog/599779