在 Kotlin 中初始化抽象 class

Question

I am working on kotlin project where I need to initialize abstract class, I can achieve this easily in java but not able to do it in kotlin, what is correct way to achieve this.

例如在 java 我已经这样做了： -

abstract class BaseClass implements E {
    static abstract class C implements SomeCallback {
        void abc();
        void def();
    }
}

class V extends BaseClass {
    V(D d) {
        // ...
    }
}

class S {
    V.C c = new V.C() { // instantiate abstract class
        @Override
        public void abc() {
            // ...
        }

        @Override
        public void def() {
            // ...
        }
    }
}

这是我的 Kotlin 代码：-

BaseClass I am using in java .

class V : BaseClass(){

}

class S{

  fun prepareV(){
     val cal = object : V.C(){
                 //Here I am getting error not able to call V.C in kotlin 


           }

}

}

This is how I have achieved this in java, but I am not able to achieve same in kotlin..its not letting me call abstract class in class S. Please guide me for correct way

Answer 1

Kotlin将嵌套的 class 视为绝对值。 您必须使用完全限定名称BaseClass.C而不是使用子类V.C的名称。

 object : BaseClass.C() { ... }

要解决此问题，您可以在V中重新声明C 。

class V : BaseClass() {
    abstract class C : BaseClass.V()
}