objective-c - 如何使用基类对象定义初始化器来填充基类属性？

Question

我有两个类:

BaseClass : NSObject
AdvanceClass : BaseClass

在 AdvanceClass 中我有一个初始化器:

-(id)initWithBaseObject:(BaseClass *)bObj
{
    if(self = [super init]) {
        self = (AdvanceClass*)bObj;
    }

    return self;
}

然后当我调用时得到 TRUE:

[myObject isKindOfClass:[BaseClass class]]

为什么？我正在将 bObj 转换为 AdvanceClass 对象。

我在这里要做的是将 BaseClass 的所有属性分配给 bObj 对象的属性。我该怎么做？

Answer 1

-(id)initWithBaseObject:(BaseClass *)bObj
{
    if(self = [super init]) {
        self = (AdvanceClass*)bObj; // this line of code discards the self = [super init]; and makes self a reference to a casted BaseClass object
        self.property1 = bObj.property1; // this is what you need to do for each property and remove the line with the cast
    }

    return self;
}