How to get current memory usage in android?

by

CAUTION: This answer measures memory usage/available of the DEVICE. This is NOT what is available to your app. To measure what your APP is doing, and is PERMITTED to do, Use android developer’s answer.

Android docs – ActivityManager.MemoryInfo

  1. parse /proc/meminfo command. You can find reference code here: Get Memory Usage in Android

  2. use below code and get current RAM:

    MemoryInfo mi = new MemoryInfo();
ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
activityManager.getMemoryInfo(mi);
double availableMegs = mi.availMem / 0x100000L;

//Percentage can be calculated for API 16+
double percentAvail = mi.availMem / (double)mi.totalMem * 100.0;

Explanation of the number 0x100000L 

1024 bytes      == 1 Kibibyte 
1024 Kibibyte   == 1 Mebibyte

1024 * 1024     == 1048576
1048576         == 0x100000

It’s quite obvious that the number is used to convert from bytes to mebibyte

P.S: we need to calculate total memory only once. so call point 1 only once in your code and then after, you can call code of point 2 repetitively.

More Related Contents:

  1. Android Studio – How to increase Allocated Heap Size
  2. What is the maximum amount of RAM an app can use?
  3. Android memory allocation
  4. Find the physical address of exception vector table from kernel module
  5. EditText causing memory leak
  6. How to Find memory leaks from native code in android
  7. Is there a minimal heap size for Android versions?
  8. Android emulator freezing OS X v10.9 (Mavericks) with HAXM
  9. Android Use Done button on Keyboard to click button
  10. Android ImageView size not scaling with source image
  11. Android facebook applicationId cannot be null
  12. Only use XHDPI drawables in Android app?
  13. Missing annotations.jar
  14. AppCompat 23.3 Support Vectors no longer work?
  15. stopService doesn’t stop’s my service…. why?
  16. Add Marker on Android Google Map via touch or tap
  17. Error implementing Support Library Action Bar
  18. Android Q (10) ask permission to get access all storage. Scoped storage
  19. Flutter TabBar and SliverAppBar that hides when you scroll down
  20. How to create the checkBox in circular shape?
  21. Multiple onActivityResult for 1 Activity
  22. How to display a Toast in Android AsyncTask?
  23. How to add android.support.v7.widget.GridLayout into intelliJidea?
  24. Android KeyStoreException Unknown Error
  25. Transforming accelerometer’s data from device’s coordinates to real world coordinates
  26. Android: parse XML from string problems
  27. How to make space between LinearLayout children?
  28. How to: Install Plugin in Android Studio
  29. What’s “requestCode” used for on PendingIntent?
  30. Android Understanding Heap Sizes

Leave a Comment