阅读安卓设备的RAM与/ proc/meminfo的总ammount

Question

我正在阅读阅读安卓设备的物理RAM的总量。

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) 
    {  
    } 
    } 

当你阅读这个文件，你将获得总内存在第一行，如：

MemTotal:   94096 kB 

Answer 2

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

您可以使用它像：

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

希望它能帮助！

Answer 3

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); 
}