Read the total number of Android devices with / proc / meminfo

Question

I am studying the total physical memory of an Android device.

I understand that this data is stored in / proc / meminfo.

how can i read it?

Answer 1

try the following:

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) { } } 

when you read this file, you will get Total Memory in First Line, for example:

 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.

You can use it like this:

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

Hope this helps!