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

Note that memory usage on modern operating systems like Linux is an extremely complicated and difficult to understand area. In fact the chances of you actually correctly interpreting whatever numbers you get is extremely low. (Pretty much every time I look at memory usage numbers with other engineers, there is always a long discussion about what they actually mean that only results in a vague conc

[dmp939]

dumpsys meminfo の読み方

[androidzaurus]

Androidアプリのメモリ使用量詳細。