Question

我正在研究阅读Android设备的物理RAM总量。

我知道这些信息存储在/ proc / meminfo中。

我怎么读它？

Answer 1

试试这个：

   public void getTotalMemory() {  
    {
    String str1 = "/proc/meminfo";
    String str2;        
    String[] arrayOfString;
    long initial_memory = 0;
    try {
    FileReader localFileReader = new FileReader(str1);
    BufferedReader localBufferedReader = new BufferedReader(    localFileReader, 8192);
    str2 = localBufferedReader.readLine();//meminfo
    arrayOfString = str2.split("\\s+");
    for (String num : arrayOfString) {
    Log.i(str2, num + "\t");
    }
    //total Memory
    initial_memory = Integer.valueOf(arrayOfString[1]).intValue() * 1024;   
    localBufferedReader.close();
    } 
    catch (IOException e) 
    {       
    }
  }

当您阅读此文件时，您将获得第一行的总内存，如：

MemTotal:          94096 kB

Answer 2

public long getTotalMemory() {
    String str1 = "/proc/meminfo";
    String str2="";
    String[] arrayOfString;
    long initial_memory = 0, free_memory = 0;
    try {
        FileReader localFileReader = new FileReader(str1);
        BufferedReader localBufferedReader = new BufferedReader(
            localFileReader, 8192);
        for (int i = 0; i < 2; i++) {
            str2 =str2+" "+ localBufferedReader.readLine();// meminfo  //THIS WILL READ meminfo AND GET BOTH TOT MEMORY AND FREE MEMORY eg-: Totalmemory 12345 KB //FREEMEMRY: 1234 KB  
        }
        arrayOfString = str2.split("\\s+");
        for (String num : arrayOfString) {
            Log.i(str2, num + "\t");
        }
        // total Memory
        initial_memory = Integer.valueOf(arrayOfString[2]).intValue();
        free_memory = Integer.valueOf(arrayOfString[5]).intValue();

        localBufferedReader.close();
    } catch (IOException e) {
    }
    return ((initial_memory-free_memory)/1024);
}

Answer 3

availMem should tell you the total available memory on the system.

你可以这样使用它：

ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
MemoryInfo mi = new MemoryInfo();
activityManager.getMemoryInfo(mi);
Log.d("FreeRam: ", "" + mi.availMem);

希望它有所帮助！

用/ proc / meminfo读取android设备的ram总量

3 个答案: