kotlin嵌套类内部类

Posted on

类结构

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
class Person{

    private var hobby:String = "run"

    //嵌套类相当于java的静态内部类
    class Student{

        private var name:String? = null
        private val age by lazy { 35 }

        fun intro(){

            print("i am a student")
        }
    }

    //内部类
    inner class Worker{


        fun intro(){
            //访问外部类
            print(this@Person.hobby+"i am a worker")
        }
    }

}

外部调用

1
2
3
4
//调用嵌套类
Person.Student().intro()
//调用内部类
Person().Worker().intro()