字符串转成NSDate类型代码,ObjC代码库,德仔网

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【ObjC】字符串转成NSDate类型

作者:英娴 / 发布于2014/11/15/ 635

字符串转成NSDate类型，计算与当前时间的相差，年数，天数，时分秒……


	NSString *dateStr=@"2013-08-13 20:28:40";//传入时间
	//将传入时间转化成需要的格式
	NSDateFormatter *format=[[NSDateFormatter alloc] init];
	[format setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
	NSDate *fromdate=[format dateFromString:dateStr];
	NSTimeZone *fromzone = [NSTimeZone systemTimeZone];
	NSInteger frominterval = [fromzone secondsFromGMTForDate: fromdate];
	NSDate *fromDate = [fromdate dateByAddingTimeInterval: frominterval];
	NSLog(@"fromdate=%@",fromDate);
	[format release];
	//获取当前时间
	NSDate *date = [NSDate date];
	NSTimeZone *zone = [NSTimeZone systemTimeZone];
	NSInteger interval = [zone secondsFromGMTForDate: date];
	NSDate *localeDate = [date dateByAddingTimeInterval: interval];
	NSLog(@"enddate=%@",localeDate);
	
	
	double intervalTime = [fromDate timeIntervalSinceReferenceDate] - [localeDate timeIntervalSinceReferenceDate];
	
	long lTime = (long)intervalTime;
	NSInteger iSeconds = lTime % 60;
	NSInteger iMinutes = (lTime / 60) % 60;
	NSInteger iHours = (lTime / 3600)$;
	NSInteger iDays = lTime/60/60/24;
	NSInteger iMonth = lTime/60/60/24/12;
	NSInteger iYears = lTime/60/60/24/384;
	
	NSLog(@"相差M年d月 或者 d日d时d分d秒", iYears,iMonth,iDays,iHours,iMinutes,iSeconds);

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