检查 NSMutableArray 是否包含字符串

Question

我正在使用以下代码检查我的 NSMutableArray (self.friendData) 中是否存在用户的姓氏。也就是说，即使用户姓氏存在于字段 "last name" 中的 self.friendData 内，它仍然返回语句的 else 部分（声明它不存在于数组中）。我怎样才能解决这个问题？

ViewController.m

 NSMutableDictionary *viewParams2 = [NSMutableDictionary new];
    [viewParams2 setValue:@"friends" forKey:@"view_name"];
    [DIOSView viewGet:viewParams2 success:^(AFHTTPRequestOperation *operation, id responseObject2) {

        self.friendData = (NSMutableArray *)responseObject2;


        NSString *myFriend = [self.neighbourDetail objectForKey:@"last name"];

        if ([self.friendData containsObject:myFriend]) {

            NSLog(@"It contains %@!", myFriend);
            self.addFriend.hidden = YES;

        } else {
            NSLog(@"It does not contain %@", myFriend);
            self.addFriend.hidden = NO;
        }


        [operation responseString];



    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Failure: %@", [error localizedDescription]);
    }];

self.friendData 内容:

 "field_friendbio" =         {
            und =             (
                                {
                    format = "<null>";
                    "safe_value" = "There is currently no bio available for this user.";
                    value = "There is currently no bio available for this user.";
                }
            );
        };
        "field_lastname" =         {
            und =             (
                                {
                    format = "<null>";
                    "safe_value" = Niyo;
                    value = Niyo;
                }
            );
        };

Answer 1

除非friendData是一个字符串数组，我想你真正的意思是这样的：

if ([self.friendData containsObject:self.neighbourDetail])

编辑：

NSMutableArray *searchResults = [[NSMutableArray alloc] init];

[self.friendData enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {

    NSDictionary *friend = obj;

    if ([friend[@"field_lastname"][@"und"][@"value "] isEqualToString:myFriend])
        [searchResults addObject:friend];
}];

NSLog(@"Search Results:%@", searchResults);

检查 NSMutableArray 是否包含字符串

Checking if NSMutableArray contains String

ios

objective-c

nsmutablearray