iphone - 使用NSDate范围搜索NSArray

Question

我有一个带有以下名称和日期对的NSArray。注意:日期始终在我的自定义数组的索引1中

MyCustomArray: 
(
"Toms Bday"
"2012-01-10"
)
(
"Jesscia Bday"
"2012-01-27"
)
(
"Jills Bday"
"2012-03-03"
)
(
"Joes Bday"
"2012-04-15"
)

我的数组中有数百个名称日期对。因此，对于给定的StartDate =“2012-01-01”和endDate =“2012-01-31”，我只想获取以下记录。我怎么做？

(
    "Toms Bday"
    "2012-01-10"
    )
    (
    "Jesscia Bday"
    "2012-01-27"
    )

我调查了Why can't NSDate be compared using < or >?这个帖子，但仍然不明白。

Answer 1

考虑到您的日期格式非常简单，您可以将它们作为字符串进行比较，结果应该是正确的:

NSString *start = @"2012-01-01";
NSString *end = @"2012-01-31";

NSString *date = @"2012-01-10";

if ([start compare:date] == NSOrderedAscending &&
    [end compare:date] == NSOrderedDescending) {
    // Note: might be descending for start and ascending for end, i'm not 100% sure, try both

    // valid date
}