package com.test.printertestdemo; import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import android.app.ActivityManager; import android.content.Context; public class MemInfo { // 获得可用的内存 public static long getmem_UNUSED(Context mContext) { long MEM_UNUSED; // 得到ActivityManager ActivityManager am = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); // 创建ActivityManager.MemoryInfo对象 ActivityManager.MemoryInfo mi = new ActivityManager.MemoryInfo(); am.getMemoryInfo(mi); // 取得剩余的内存空间 MEM_UNUSED = mi.availMem/1048576; return MEM_UNUSED; } // 获得总内存 public static long getmem_TOLAL() { long mTotal; // /proc/meminfo读出的内核信息进行解释 String path = "/proc/meminfo"; String content = null; BufferedReader br = null; try { br = new BufferedReader(new FileReader(path), 8); String line; if ((line = br.readLine()) != null) { content = line; } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { if (br != null) { try { br.close(); } catch (IOException e) { e.printStackTrace(); } } } // beginIndex int begin = content.indexOf(':'); // endIndex int end = content.indexOf('k'); // 截取字符串信息 content = content.substring(begin + 1, end).trim(); mTotal = Integer.parseInt(content); return mTotal; } }