iOS时间转换相关整理(附送试用期逻辑处理)

对于时间转换我们并不陌生，只是不同的后台风格不同，我们请求回来的时间格式也不同！

现整理时间相关点:

 //从1970年开始到现在经过了多少秒-(NSString *)getTimeSp{NSString *time;NSDate *fromdate=[NSDate date];time = [NSString stringWithFormat:@"%f",[fromdate timeIntervalSince1970]];return time;}
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 //将时间戳转换成NSDate,转换的时间我也不知道是哪国时间,应该是格林尼治时间-(NSDate *)changeSpToTime:(NSString*)spString{NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:[spString intValue]];NSLog(@"%@",confromTimesp);return confromTimesp;}
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 //将时间戳转换成NSDate,加上时区偏移。这个转换之后是北京时间-(NSDate*)zoneChange:(NSString*)spString{NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:[spString intValue]];NSTimeZone *zone = [NSTimeZone systemTimeZone];NSInteger interval = [zone secondsFromGMTForDate:confromTimesp];NSDate *localeDate = [confromTimesp  dateByAddingTimeInterval: interval];NSLog(@"%@",localeDate);return localeDate;}
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 //比较给定NSDate与当前时间的时间差，返回相差的秒数-(long)timeDifference:(NSDate *)date{NSDate *localeDate = [NSDate date];long difference =fabs([localeDate timeIntervalSinceDate:date]);return difference;}
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 //将NSDate按yyyy-MM-dd HH:mm:ss格式时间输出-(NSString*)nsdateToString:(NSDate *)date{NSDateFormatter *dateFormat=[[NSDateFormatter alloc]init];[dateFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"];NSString* string=[dateFormat stringFromDate:date];NSLog(@"%@",string);return string;}
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 //将yyyy-MM-dd HH:mm:ss格式时间转换成时间戳-(long)changeTimeToTimeSp:(NSString *)timeStr{long time;NSDateFormatter *format=[[NSDateFormatter alloc] init];[format setDateFormat:@"yyyy-MM-dd HH:mm:ss"];NSDate *fromdate=[format dateFromString:timeStr];time= (long)[fromdate timeIntervalSince1970];NSLog(@"%ld",time);return time;}
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 //获取当前系统的yyyy-MM-dd HH:mm:ss格式时间-(NSString *)getTime{NSDate *fromdate=[NSDate date];NSDateFormatter *dateFormat=[[NSDateFormatter alloc]init];[dateFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"];NSString* string=[dateFormat stringFromDate:fromdate];return string;}
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 //将当前时间转化为年月日格式-(NSString *)changeDate{NSDate *date = [NSDate date];NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];NSInteger unitFlags =  NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekdayCalendarUnit |NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;NSDateComponents *comps = [calendar components:unitFlags fromDate:date];NSInteger year = [comps year];NSInteger month = [comps month];NSInteger day = [comps day];NSInteger hour = [comps hour];NSInteger min = [comps minute];NSInteger sec = [comps second];NSString *string = [NSString stringWithFormat:@"%d年%d月%d日%d时%d分%d秒",year,month,day,hour,min,sec];NSLog(@"%@",string);return string;}
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现将我自定义封装的时间转换如下：

##1.时间戳 转换 时间

//  时间戳转换时间
#import <Foundation/Foundation.h>@interface NSString (QTXTime)
- (NSString *)timeChangeWithDateFormat:(NSString *)dateFormat;
@end
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#import "NSString+QTXTime.h"@implementation NSString (QTXTime)// 时间戳转日期 此情况属于server并未有时区区域区分
- (NSString *)timeChangeWithDateFormat:(NSString *)dateFormat {double publishLong = [self doubleValue];NSDateFormatter *formatter = [[NSDateFormatter alloc] init];[formatter setDateStyle:NSDateFormatterMediumStyle];[formatter setTimeStyle:NSDateFormatterShortStyle];[formatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];[formatter setDateFormat:dateFormat];NSDate *publishDate = [NSDate dateWithTimeIntervalSince1970:publishLong / 1000]; // 这是毫秒转换成秒 如果本来server传来值就是秒没必要除1000了NSDate *date = [NSDate date];NSTimeZone *zone = [NSTimeZone systemTimeZone];NSInteger interval = [zone secondsFromGMTForDate:date];publishDate = [publishDate  dateByAddingTimeInterval:interval];NSString *str = [formatter stringFromDate:publishDate];return str;
}
@end
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在相对应的model里使用时转换,例如：

// 订单时间
@property (nonatomic, copy) NSString *orderTime;// 将时间戳转化为时间
- (NSString *)orderTime {return [_orderTime timeChangeWithDateFormat:@"yyyy-MM-dd hh:mm"]; // 时间格式选择自己需要展示的格式
}
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##2. 时间字符串 转换 时间

//  时间转化#import <Foundation/Foundation.h>@interface NSDate (QTXDateTimeStr)// 时间转字符串
- (NSString *)timeFormat:(NSString *)dateFormat;// 字符串转时间
+ (NSDate *)stringChangeTimeFormat:(NSString *)dateFormat string:(NSString *)string;@end
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#import "NSDate+QTXDateTimeStr.h"@implementation NSDate (QTXDateTimeStr)- (NSString *)timeFormat:(NSString *)dateFormat {NSDateFormatter *formatter = [[NSDateFormatter alloc] init];[formatter setDateStyle:NSDateFormatterMediumStyle];[formatter setTimeStyle:NSDateFormatterShortStyle];[formatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];[formatter setDateFormat:dateFormat];return [formatter stringFromDate:self];
}+ (NSDate *)stringChangeTimeFormat:(NSString *)dateFormat string:(NSString *)string {NSDateFormatter *formatter = [[NSDateFormatter alloc] init];[formatter setDateStyle:NSDateFormatterMediumStyle];[formatter setTimeStyle:NSDateFormatterShortStyle];[formatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];[formatter setDateFormat:dateFormat];return [formatter dateFromString:string];}@end
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使用时，调用方法即可,举个栗子吧：

 // 显示当前的不同格式的展示时间
NSDate *currentTime = [NSDate date];
NSInteger day = [[currentTime timeFormat:@"dd"] integerValue];NSDate *currentTime = [NSDate date];
NSString *currentTimeStr = [currentTime timeFormat:@"yyyy年MM月"];// 字符串转时间NSDate *date = [NSDate stringChangeTimeFormat:@"yyyy年MM月" string:currentTimeStr];
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##3. 时间差处理 像一些APP 会有试用期,这个时候我们需要取到本地时间与注册时间的时间差,看看有木有过期.然后根据判断做出相应的处理. 举个?: 1>取到本地时间与注册时间的时间差

// 判断是否还在10天试用期内
- (void)judgeForDeadline {NSString *createTimeStr = [XHHAccountTool account].createTime;NSString *createtime = [createTimeStr timeChangeWithDateFormat:@"yyyy-MM-dd HH:mm:ss"];int addDays = 10;NSDateFormatter *dateFormatter = [NSDateFormatter new];[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:@"GMT"]];NSDate *createDate = [dateFormatter dateFromString:createtime];NSDate *deadlineDate = [createDate dateByAddingTimeInterval:60 * 60 * 24 * addDays];// 注册时间NSTimeInterval start = [createDate timeIntervalSince1970]*1;// 截止时间NSTimeInterval end = [deadlineDate timeIntervalSince1970]*1;self.diffTime = end - start;
}
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2> 当status:1是会员可用, 0是非会员时,但在试用期内可用

if ([[XHHAccountTool account].status isEqualToString:@"1"] || ([[XHHAccountTool account].status isEqualToString:@"0"] && self.diffTime > 0)) { // 会员 // 还在10天试用期内XHHModifiedFormulaController *vc = [[XHHModifiedFormulaController alloc] init];[self.navigationController pushViewController:vc animated:YES];} else {XHHAlterView *alter = [[XHHAlterView alloc] initWithTitle:@"提示" Message:@"您还没成为会员，暂时无法使用该功能, 请充值会员." Prompt:@"" delegate:self rightButtonTitle:@"确定" otherButtonTitles:nil];[alter show];}
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