回调

1.public interface MyInterface{
    void sayYourName();
}


2.public class Myclass{
    
    pubcli Myclass(){

    }
    
    //用接口类型的对象作为输入参数

    public void lvBudong (MyInterface myInterface){
        myInterface.sayYourName();
    }

3.在Activity中调用这个类，创建对象并调用其方法，期间实现接口中的抽象方法的具体实现逻辑

    public MainActivity extend Activity{
        ...
        Myclass myClass = new Myclass(new MyInterface()){
            public void sayYourName(){

            }
        }
    });
    }
}