用字典值动态填充对象属性 [英] Dynamically populate object properties with dictionary values
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问题描述
在Objective-C中,我有一个字典:
In Objective-C, I have a dictionary:
firstName -> John
lastName -> Smith
age -> 34
和一个对象 Person
实例变量和属性(适当地处理内存管理)。我想创建一个方便的初始化器,它将字典作为参数,并从字典键/值中填充所有对象字段(通过其用于内存管理的属性),而不是手动执行以下操作:
and an object Person
that has corresponding instance variables and properties (that handle memory management appropriately). I'd like to create a convenience initializer that takes a dictionary as an argument and populates all the object fields (via their properties for memory management purposes) from the dictionary keys/values, instead of manually doing something like:
obj.firstName = [dict objectForKey:@"firstName"];
obj.lastName = [dict objectForKey:@"lastName"];
obj.age = [dict objectForKey:@"age"];
....
我该怎么做?
推荐答案
您可以使用键值编码:
[obj setValuesForKeysWithDictionary:dict];
另请参见 -setValuesForKeysWithDictionary: / code>
。
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