How does Android calculate cache and data size?

Question

How is the size of cache and data calculated in the application properties?

I save all my data to the SD card, but Android shows me that I'm constantly using 4 KB, but on the SD card are about 50 KB. The same with the cache! I put a 3 MB picture in there. But my cache size is zero!

I think I'm using the correct directory: /mnt/sdcard/Android/data/my.package.name/files and /mnt/sdcard/Android/data/my.package.name/cache.

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Has this changed in Android 4.0.x?

See this screenshot:

Answer 1

I believe the Cache size is the size of the Internal Cache directory that is returned by http://developer.android.com/reference/android/content/Context.html#getCacheDir()

I think you've used: http://developer.android.com/reference/android/content/Context.html#getExternalCacheDir()