Question

我有这本词典：

NSMutableDictionary *dic = [[NSMutableDictionary alloc]init];
[dic setObject:@"1" forKey:@"Name"];
[dic setObject:@"1" forKey:@"Last"];
[dic setObject:@"1" forKey:@"Phone1"];
[dic setObject:@"1" forKey:@"Phone2"];
[dic setObject:@"1" forKey:@"Phone3"];
[dic setObject:@"1" forKey:@"Address"];

仅提取电话号码的最佳方式是什么？

（这是一个动态字典，有时是2个电话号码，有时是5个）

Answer 1

首先，不要将电话号码设置在不同的键下（因为语言为您提供数组）。

NSMutableDictionary *dic = [NSMutableDictionary new];
NSMutableArray *phoneNumbers = [NSMutableArray new];

dic[@"Name"] = @"1";
dic[@"Last"] = @"1" ;
dic[@"Address"] = @"1";
dic[@"Phone"] = phoneNumbers;

[dic[@"Phone"] addObject:@"123"];
[dic[@"Phone"] addObject:@"213"];
[dic[@"Phone"] addObject:@"456"];

// Now retieve phone numbers
for (NSString *phoneNumber in dic[@"Phone"]) {
    NSLog(@"Number: %@", phoneNumber);
}

Answer 2

这样的事情：

  NSSet* passingKeys = [dict keysOfEntriesPassingTest:^BOOL(id key, id obj, BOOL *stop) {
    return [key rangeOfString:@"Phone"].location != NSNotFound;
  }];

获取从NSMutableDictionary过滤的对象组

2 个答案: