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];
}
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