ios - 如何比较两个日期？

Question

我正在尝试比较两个日期，无论哪个是新日期还是旧日期，我的日期格式如下：

2013-06-03 09:30:35

(YYYY-MM-DD HH:MM:SS)

请给我一些想法，两者目前都是字符串格式？

那么可以转换广告支票吗？

Answer 1

将该字符串转换为NSDateusing dateFormatter. 您可以查看此链接 这是对您的问题的很好讨论 如何比较两个 NSDates：哪个是最近的？

Answer 2

尝试这个

NSString 到 NSDate

NSString *dateString = @"01-02-2010";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
// this is imporant - we set our input date format to match our input string
// if format doesn't match you'll get nil from your string, so be careful
[dateFormatter setDateFormat:@"dd-MM-yyyy"];
NSDate *dateFromString = [[NSDate alloc] init];
// voila!
dateFromString = [dateFormatter dateFromString:dateString];
[dateFormatter release];

NSDate 转换为 NSString：

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"dd-MM-yyyy"];
NSString *strDate = [dateFormatter stringFromDate:[NSDate date]];
NSLog(@"%@", strDate);
[dateFormatter release];

请阅读这个

在此处输入链接描述

if ([yourFirstDate compare:secondDate] == NSOrderedDescending) {
    NSLog(@"yourFirstDate is later than secondDate");        

} else if ([yourFirstDate compare:secondDate] == NSOrderedAscending) {
    NSLog(@"yourFirstDate is earlier than secondDate");

} else {
    NSLog(@"dates are the same");

}

与@DIVYU 的链接相同