public interface Platform {
        int Platform_UNSET = 0;
        int Platform_iOS = 1;
        int Platform_Android = 2;
        int Platform_Windows = 3;
        int Platform_OSX = 4;
        int Platform_WEB = 5;
        int Platform_WX = 6;
        int Platform_LINUX = 7;
        int Platform_iPad = 8;
        int Platform_APad = 9;
        int Platform_Harmony = 10;
        int Platform_HarmonyPad = 11;
        int Platform_HarmonyPC = 12;
        int Platform_MAX = 12;
    }

其中UNSET 和 MAX是什么意思 iPad是苹果的平板 APad是安卓平板？