iOS 时间戳转换

常用时间戳转换记录

1. 将某个时间Str转化成 时间戳

#pragma mark - 将某个时间Str转化成 时间戳
+ (NSInteger )timeSwitchTimestamp:(NSString *)formatTime andFormatter:(NSString *)format{
    
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:format];  //（@"YYYY-MM-dd hh:mm:ss"）----------注意>hh为12小时制,HH为24小时制
    
    NSTimeZone* timeZone = [NSTimeZone timeZoneWithName:@"Asia/Beijing"];
    [formatter setTimeZone:timeZone];
    
    NSDate* date = [formatter dateFromString:formatTime];
    NSInteger timeSp = [[NSNumber numberWithDouble:[date timeIntervalSince1970]] integerValue];
    return timeSp;
}

2. 将某个时间戳转化成 时间Str

#pragma mark - 将某个时间戳转化成 时间Str
+ (NSString *)timestampSwitchTime:(NSInteger)timestamp andFormatter:(NSString *)format{
    
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:format];
    NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@"Asia/Beijing"];
    [formatter setTimeZone:timeZone];
    
    NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:timestamp];
    
    NSString *confromTimespStr = [formatter stringFromDate:confromTimesp];
    if ([format isEqual:@"HH:mm:ss"] && confromTimespStr.length<8) {
        confromTimespStr = @"00:00:00";
    }
    if ([format isEqual:@"YYYY-MM-dd HH:mm:ss"] && confromTimespStr.length<18) {
        confromTimespStr = @"2000-01-01 00:00:00"; //默认返回
    }
    return confromTimespStr;
}