Kotlin Enum 例子

enum class ToyBrand(val value: Int) {

    MATTEL(0),
    HASBRO(1),
    Lego(2),
    BANDAI(3),
    Custom(5);

    companion object {
        fun getTotalSize() = values().size
    }
}

create Enum clas

• 定義 ToyBrand 為 Custom

val brand = ToyBrand.Custom

Log.d("TAG", "value name: " + brand.name)
Log.d("TAG", "value value: " + brand.value)
Log.d("TAG", "value ordinal: " + brand.ordinal)

Debug 訊息

• 列表

var array: Array<ToyBrand> = ToyBrand.values()
for (item in array) {
    Log.d("TAG", "position: ${item.ordinal}, name: ${item.toString()}")
}

Debug 訊息

• Total Size ＆ valueOf 確認資料型態

Log.d("TAG", "valueOf input String: " + ToyBrand.valueOf(brand.toString()))

Log.d("TAG", "ToyBrand total size: " + ToyBrand.getTotalSize())

Debug 訊息