ios - 如何将日期字符串(如 "05/20/2015 05:27 pm")转换为 NSDate，然后再转换为时间戳

Question

我在格式化程序的帮助下将此日期字符串 "05/20/2015 05:27 pm" 转换为 NSDate 但它返回 nil.

-(NSDate *)dateFromString:(NSString *)strDate withFormat:(NSString *)strDateFormat
{
NSDate *date = nil;

[self.dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
if (strDate) {
    if (strDateFormat) {
        [self.dateFormatter setDateFormat:strDateFormat];

    }

    date = [self.dateFormatter dateFromString:strDate];

}
return  date;
}

我正在使用上面的函数，我将字符串作为 "05/20/2015 05:27 pm" 传递，格式为 @"dd/MM/yyyy HH:mm: ss”.

Answer 1

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"mm/dd/yyyy hh:mm a"];
[dateFormatter setTimeZone:[NSTimeZone systemTimeZone]];
NSDate *stringDate = [dateFormatter dateFromString:@"05/20/2015 05:27 pm"];
NSLog(@"%@", stringDate);