Question

我正在尝试比较两个日期，无论哪个是新的或旧的，我的日期是以下格式：

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

使用NSDate将这些字符串转换为dateFormatter。您可以查看此链接以下是您的问题的良好讨论 How to compare two NSDates: Which is more recent?

Answer 2

试试这个

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];

请阅读本文

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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

我如何比较两个日期？

2 个答案: