var runTime = Java.Lang.Runtime.GetRuntime();
var maxMemory = runTime.MaxMemory();
var totalMemory = runTime.TotalMemory();
var freeMemory = runTime.FreeMemory();
// 获取可用内存
ActivityManager.MemoryInfo mi = new ActivityManager.MemoryInfo();
ActivityManager activityManager = (ActivityManager)Application.Context.GetSystemService(Application.ActivityService);
activityManager.GetMemoryInfo(mi);
var avMem = mi.AvailMem * 1.0 / (1024 * 1024);// 可用内存 818.98
//最大分配内存获取方法 256
double maxMemoryT = (double)(maxMemory * 1.0 / (1024 * 1024));
//当前分配的总内存 4.81
double totalMemoryT = (double)(totalMemory * 1.0 / (1024 * 1024));
//剩余内存 2.16
double freeMemoryT = (double)(freeMemory * 1.0 / (1024 * 1024));