从NSDictionary中删除键为空字符串的值

Question

我收到这样的JSON响应：

{
    "partner_wise": {
        “partner1”: {
            "processing": 254,
            "complete": 0,
            "track_invoice": 0,
            "bar_code": 0
       },
        "": {
            "processing": 0,
            "complete": 0,
            "track_invoice": 0,
            "bar_code": 0
             },
        "partner2": {
            "processing": 0,
            "complete": 0,
            "track_invoice": 0,
            "bar_code": 0
        }
      }
}

我在tableView中按索引设置这些值。 从这个JSON响应中，我不必显示键为空字符串的值。 如何从NSDictionary删除此对象。

Answer 1

您不能从NSDictionary中删除这些对象。 NSDictionary是一个不变的对象。
但是您可以进行可变复制并删除不需要的密钥：

//remove from mutable dictionary
NSDictionary* dictionary = [self getData];
NSMutableDictionary* mutableDictionary = [dictionary mutableCopy];
[mutableDictionary removeObjectForKey:@""];
self.data = mutableDictionary;

Answer 2

您可以使用removeObjectForKey

[dictionary removeObjectForKey:@""];

示例代码：

//your json dictionary here!
NSDictionary *finalDictionary = [[NSDictionary alloc] initWithObjectsAndKeys:@"11111111",@"",@"00000000",@"testkey1", nil];

NSMutableDictionary *dictionaryColection = [[NSMutableDictionary alloc] initWithDictionary:finalDictionary];
NSLog(@"Dictionary Full: %@", dictionaryColection);

[dictionaryColection removeObjectForKey:@""];
finalDictionary = dictionaryColection;
NSLog(@"Final dictionary removed: %@", finalDictionary);

日志：

Dictionary Full: {
    "" = 11111111;
    testkey1 = 00000000;
}

Final dictionary removed: {
    testkey1 = 00000000;
}

Answer 3

在迅速3.0

dictionary.removeObject(forKey: "")