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;
 }

 //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;
 }

 //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;
 }

 //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;
 }

 //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;
 }

 //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;
 }

 //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;
 }

 //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;
 }

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

#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

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
}

##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

#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

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];

##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;
}

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];
        }