Android How do you get total memory RAM in the device?

Question

I can get total available memory by:

ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
activityManager.getMemoryInfo(memoryInfo);
memoryInfo.availMem;

However, how do you get Total memory (RAM) of the device?

I did read: How do I discover memory usage of my application in Android?

It doesn't seem like adding pidMemoryInfo.getTotalPss() gives me the total memory either.

I guess you can do this way 'memoryInfo.totalMem' – Hamza Mehmood Sep 07 '16 at 05:45 — Hamza Mehmood, Sep 07 '16 at 05:45

score 15 · Accepted Answer · answered Nov 28 '12 at 10:28

15

Try this works for me.

public static String getTotalRAM() {
    RandomAccessFile reader = null;
    String load = null;
    try {
        reader = new RandomAccessFile("/proc/meminfo", "r");
        load = reader.readLine();
    } catch (IOException ex) {
        ex.printStackTrace();
    } finally {
        // Streams.close(reader);
    }
    return load;
}

answered Nov 28 '12 at 10:28

sandy

3,346
4
35
45

no this is not give any memory size of RAM dude its print then read string object like "reader is == java.io.RandomAccessFile@413b39c0" – Bhanu Sharma Jun 20 '14 at 11:29
1

why comment out the cleanup? – Matt K Jul 03 '14 at 15:29

score 3 · Answer 2 · answered Feb 06 '13 at 19:16

MemoryInfo class has added totalMem in API 16. Please give a try.

public long totalMem Added in API level 16 The total memory accessible by the kernel. This is basically the RAM size of the device, not including below-kernel fixed allocations like DMA buffers, RAM for the baseband CPU, etc.

score 3 · Answer 3 · answered Oct 23 '10 at 01:46

3

If you don't find something else, you could bypass android and read /proc/meminfo which is what the 'free' command on a more ordinary linux distribution does

answered Oct 23 '10 at 01:46

Chris Stratton

38,489
6
80
115

Android How do you get total memory RAM in the device?

3 Answers3

Linked