documented android app memory limitation

I have came across some blogs describing the memory limitation i开发者_如何学运维mposed by android system on a running app, but I couldn't find the official document of such topic, can anyone points me to the place where it is mentioned in android official document? thanks.

The documentation you may want is probably the activity manager official documentation. Take a look at the listed methods there, such as

getLargeMemoryClass(), getMemoryClass(), getMemoryInfo(ActivityManager.MemoryInfo outInfo), etc

hope that helps.