iOS版。在valueForKeyPath中将对象添加到NSMutableArray

Question

如果我的NSMutableArray看起来像这样：

 self.securityQuestionsMutableArray = [[NSMutableArray alloc] init];

 // This is how I would add an object or objects to a `NSMutableArray`
 //[self.securityQuestionsMutableArray addObject:@""];

 {
    answer = "";
    description = "ID Number";
    displayText = "ID Number";
    fieldName = IDNumber;
    secuityQuestionId = 1;
},
    {
    answer = "";
    description = "Test Question";
    displayText = "Test Question";
    fieldName = "Test Questionr";
    secuityQuestionId = 2;
}

如何在valueForKeyPath中添加一个或多个对象@＆＃34;回答＆＃34; valueForKeyPath NSMutableArray 到我现有的NSMutableArray

Answer 1

您可以像这样设置单个 NSMutableDictionary 对象键值对的值

  

[[self.securityQuestionsMutableArray objectAtIndex：index] setValue：@＆＃34; new Value＆＃34; forKeyPath：@＆＃34;答案＆＃34;];

这里 index 将指向数组内的特定对象。但请记住，数组中的所有对象都应该是可变字典类型。如果您使用 NSDictionary 对象，则会崩溃。