OC ----關于時間的處理

//獲得目前時間距1970的秒數

- (NSString *)setCurrTimeLenght

{

    NSTimeInterval time = [[NSDate date] timeIntervalSince1970];

    NSString *timeLenght = [NSString stringWithFormat:@"%0.0f",time];

    return timeLenght;

}

//根據距離1970年的秒數算給定秒數的日期時間

- (NSString *)getTimeString

{

    NSString *strTime = [[NSString alloc]initWithString:self];

    NSDate *mydate1970 = [NSDate dateWithTimeIntervalSince1970: strTime.length >

([self setCurrTimeLenght].length+2)

 ? ([strTime longLongValue]/1000) : [strTime longLongValue]];

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];

    [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];  //時間格式

    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"zh_CN"];

    strTime = [dateFormatter stringFromDate:mydate1970];

    return strTime;

}

//擷取隻有時分秒

- (NSString *)getHoursMinutesString

{

    NSString *strTime = [[NSString alloc]initWithString:self];

    NSDate *mydate1970 = [NSDate dateWithTimeIntervalSince1970: strTime.length > ([self setCurrTimeLenght].length+2) ? ([strTime longLongValue]/1000) : [strTime longLongValue]];

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];//@"yyyy-MM-dd HH:mm:ss"

    [dateFormatter setDateFormat:@"HH:mm:ss"];

    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"zh_CN"];

    strTime = [dateFormatter stringFromDate:mydate1970];

    return strTime;

}

//擷取時分

- (NSString *)getHoursMinString

{

    NSString *strTime = [[NSString alloc]initWithString:self];

    NSDate *mydate1970 = [NSDate dateWithTimeIntervalSince1970: strTime.length > ([self setCurrTimeLenght].length+2) ? ([strTime longLongValue]/1000) : [strTime longLongValue]];

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];

    [dateFormatter setDateFormat:@"HH:mm"];

    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:@"zh_CN"];

    strTime = [dateFormatter stringFromDate:mydate1970];

    return strTime;

}

轉載于:https://www.cnblogs.com/qwer-BHS/p/5316143.html