Kotlin enum (实现网络加载架构)

• 1. interface

interface NetManager {
    enum class ForBind(var type:String,var url:Any){
        GET("",""),
        POST("",""),
        DELETE("",""),
        UPDATE("","")
    }
    fun get(url: Any)
    fun post(url: Any)
    fun delete(url: Any)
    fun update(url: Any)
    fun loadBind(bind: NetManager.ForBind)
}

• 2. ConcreteNetManager (private 灵魂很重要)

private enum class ConcreteNetManager:NetManager {
    Notify {

        override fun loadBind(bind: NetManager.ForBind) {
            bind.let {
                when (it) {
                    NetManager.ForBind.GET -> {
                        when (it.type) {
                            "get 01" -> get(it.url)
                            "get 02" -> get(it.url)
                            "get 03" -> get(it.url)
                        }
                    }

                    NetManager.ForBind.POST -> {
                        when (it.type) {
                            "post 01" -> post(it.url)
                            "post 02" -> post(it.url)
                            "post 03" -> post(it.url)
                        }
                    }

                    NetManager.ForBind.DELETE -> {
                        when (it.type) {
                            "delete 01" -> delete(it.url)
                            "delete 02" -> delete(it.url)
                            "delete 03" -> delete(it.url)
                        }
                    }

                    NetManager.ForBind.UPDATE -> {
                        when (it.type) {
                            "update 01" -> update(it.url)
                            "update 02" -> update(it.url)
                            "update 03" -> update(it.url)
                        }
                    }
                }
            }
        }

        override fun get(url: Any) {
            TODO("Not yet implemented")
        }

        override fun post(url: Any) {
            TODO("Not yet implemented")
        }

        override fun delete(url: Any) {
            TODO("Not yet implemented")
        }

        override fun update(url: Any) {
            TODO("Not yet implemented")
        }

    }
}

• 3.ClientForNetMnager

// 客户端使用
class ClientForNetMnager {

    companion object {
        fun Get(type: String,url: Any){
            val any = NetManager.ForBind.GET.let {
                it.type = type
                it.url = url
                ConcreteNetManager.Notify.loadBind(it)
            }
        }
        fun Post(type: String,url: Any){
            val any = NetManager.ForBind.POST.let {
                it.type = type
                it.url = url
                ConcreteNetManager.Notify.loadBind(it)
            }
        }
        fun Delete(type: String,url: Any){
            val any = NetManager.ForBind.DELETE.let {
                it.type = type
                it.url = url
                ConcreteNetManager.Notify.loadBind(it)
            }
        }
        fun Update(type: String,url: Any){
            val any = NetManager.ForBind.UPDATE.let {
                it.type = type
                it.url = url
                ConcreteNetManager.Notify.loadBind(it)
            }
        }
    }
}

• 4. use

class Use {
    init {
        ClientForNetMnager.Get()
        ClientForNetMnager.Post()
        ClientForNetMnager.Delete()
        ClientForNetMnager.Update()
    }
}

补充：本文type时String类型，当你替换成enum在when的时候编译器会自动补充你所添加的所有网络请求的枚举，原文这样写的原因很简单 -> 让你有足够的想象空间：比方说（哪个美女..）