Unity_如何判断应用设备内存小于1G（内容可定制为根据机器配置进行不同LOD）

直接上脚本，需要用的时候在需要的地方调用就好。

如:

//获取设别的最大内存,作为判断LOD等级和决定1G以下设备不能进游戏
#if UNITY_ANDROID && !UNITY_EDITOR
        meminfo.gc_Collect();
#endif

meminfo脚本

using UnityEngine;
using System;
using System.Collections;

#if UNITY_ANDROID
    using System.Text;
    using System.Text.RegularExpressions;
    using System.IO;
#endif

#if UNITY_IPHONE || UNITY_IOS
    using System.Runtime.InteropServices;
#endif

public class meminfo  {
#if !UNITY_EDITOR && !UNITY_WEBPLAYER

    #if UNITY_ANDROID
        public struct meminf{
            //all numbers are in kiloBytes
            public int memtotal;
            public int memfree;
            public int active;
            public int inactive;
            public int cached;
            public int swapcached;
            public int swaptotal;
            public int swapfree;
        }

        public static meminf minf = new meminf();

        private static Regex re = new Regex(@"\d+");

        public static bool getMemInfo(){

            if(!File.Exists("/proc/meminfo")) return false;

            FileStream fs = new FileStream("/proc/meminfo", FileMode.Open, FileAccess.Read, FileShare.Read);
            StreamReader sr = new StreamReader(fs);

            string line;
            while((line = sr.ReadLine())!=null){
                line = line.ToLower().Replace(" ","");
                if(line.Contains("memtotal")){ minf.memtotal = mVal(line); }
                if(line.Contains("memfree")){ minf.memfree = mVal(line); }
                if(line.Contains("active")){ minf.active = mVal(line); }
                if(line.Contains("inactive")){ minf.inactive = mVal(line); }
                if(line.Contains("cached") && !line.Contains("swapcached")){ minf.cached = mVal(line); }
                if(line.Contains("swapcached")){ minf.swapcached = mVal(line); }
                if(line.Contains("swaptotal")){ minf.swaptotal = mVal(line); }
                if(line.Contains("swapfree")){ minf.swapfree = mVal(line); }
            }

            sr.Close(); fs.Close(); fs.Dispose();
            return true;
        }

        private static int mVal(string s){
            Match m = re.Match(s); return int.Parse(m.Value);
        }

        public static void gc_Collect() {
            var jc = new AndroidJavaClass("java.lang.System");
            jc.CallStatic("gc");
            jc.Dispose();
        }

    #endif

    #if UNITY_IPHONE || UNITY_IOS

        public struct meminf{
            //all numbers are in bytes
            public int memtotal;
            public int memfree;
            public int memused;
        }

        public static meminf minf = new meminf();

        [DllImport("__Internal")]
        private static extern int igetRam(bool what);

        public static bool getMemInfo(){

            int rt;

            rt = minf.memfree = igetRam(true);//free
            rt = minf.memused = igetRam(false);//used
            if(rt==-) return false;

            minf.memtotal = minf.memfree + minf.memused;

            return true;

        }

    #endif

#endif
}