iOS - 对象未添加到数组

Question

我不明白为什么附件没有添加到数组filteredAttachments？dataAttachment 是有附件的那个，我想在其中搜索附件有一个特定的名称，然后将匹配的名称添加到

.h:

@property (nonatomic, strong) NSMutableArray * dataAttachments;

@property (nonatomic, strong) NSMutableArray * filteredAttachments;

.m:

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {

  self.filteredAttachments = [NSMutableArray new];

  [self.dataAttachments enumerateObjectsUsingBlock:^(Attachment *attachment, NSUInteger index, BOOL *stop) {

    if ([attachment.name containsString:self.searchBarFiltern.text]) {

      [self.filteredAttachments addObject:attachment];

    }
  }];

  [self.tableView reloadData];
}

Answer 1

首先初始化你的 self.dataAttachments 数组

self.dataAttachments = [NSMutableArray array]:

然后检查 self.dataAttachments 数组的输出是空白还是填充。