/**
* 得到系统内存信息的工具类
* @author zwenkai
*/
public class SystemInfoUtils { /**
* 得到运行的进程总个数
*
* @param context
* @return 运行进程个数
*/
public static int getRunningProcessCount(Context context) { ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
return am.getRunningAppProcesses().size();
}
/**
* 得到可用内存数
*
* @param context
* @return
*/
public static long getAvailRam(Context context) { ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
MemoryInfo outInfo = new MemoryInfo();
am.getMemoryInfo(outInfo);
return outInfo.availMem;
}
/**
* 得到总内存数
*
* @param context
* @return
*/
public static long getTotalRam(Context context) { try { File file = new File("/proc/meminfo"); BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
String line = br.readLine();
br.close();
StringBuffer sb = new StringBuffer();
//MemTotal: 513000 kB
for (char c :line.toCharArray()) { if(c > '0' && c < '9') { sb.append(c);
}
}
return Integer.parseInt(sb.toString())*1024l;
} catch (IOException e) { e.printStackTrace();
return 0;
}
}
//4.0之后可以使用
public long getTotalRam1(Context context) { ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
MemoryInfo outInfo = new MemoryInfo();
am.getMemoryInfo(outInfo);
return outInfo.totalMem;
}
}