本文介绍了过滤自定义对象的NSArray的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个 c
What I want to do is create a new NSArray from the existing contacts array that match the userIDs in userIDs.
因此，如果联系人有3 userID 1,2和3.我的 userIDs 有一个 NSString 我想让结果数组包含 Contact ，它等于 userID 3.
So if contacts has 3 Contact objects with userID 1,2 and 3. And my userIDs has a NSString object 3. Then I want the resulting array to contain Contact which equals userID 3.
Contact.h
Contact.h
Contact : NSObject
FacebookGroup.h
FacebookGroup : Contact @property (nonatomic, strong) NSSet *individuals;
Individual.h
Individual : Contact @property (nonatomic, strong) NSString *userID;
推荐答案
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NSPredicate *predicate = [NSPredicate predicateWithFormat:@"userID IN %@", userIDs]; NSArray *filtered = [contacts filteredArrayUsingPredicate:predicate];
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