使用 Kotlin 实现 MVC：利用 kotlin 的数据类实现 model 层，使用标准库函数使结构更加直观。
/**
* 数据类Modal
*/
data class Student(private var name: String, private var age: Int) {
fun getName(): String = this.name
fun setName(newName: String) = { name = newName }()
fun getAge(): Int = this.age
fun setAge(newAge: Int) = { age = newAge }()
}
/**
* 视图层 View
*/
class View {
fun showView(name: String, age: Int) = println("name:$name,age:$age")
}
/**
* 控制器 Controller
*/
class Controller(private var view: View, private var modal: Student) {
fun setName(newName: String) = modal.setName(newName)
fun setAge(newAge: Int) = modal.setAge(newAge)
fun getName(): String = modal.getName()
fun getAge(): Int = modal.getAge()
fun updateView() {
println("更新视图:------------")
view.showView(modal.getName(), modal.getAge())
}
}
/**
* kotlin MVC模式
* @author IWH
* android默认的开发模式就是MVC，activity属于控制器负责XML与Modal的处理
*/
fun main() {
val view = View()
val modal = Student("iwh", 20)
val controller = Controller(view, modal)
view.showView(controller.getName(), controller.getAge())
controller.setAge(21)
controller.setName("jack")
controller.updateView()
main2()
}
/**
* 使用kotlin特性
*/
fun main2() {
View().apply outer@{
Student("iwh", 20).apply inner@{
with(Controller(this@outer, this@inner)) last@{
this@outer.showView(this.getName(), this.getAge())
setName("jack")
setAge(21)
updateView()
}
}
}
} 