问题
I've looked in DDMS but didn't see anything. Thanks.
回答1:
You should have clicked "Update Heap" button in DDMS in Devices view.
回答2:
You see only about 3Mb (which is great btw) because the VM allocates just as much as it needs. If you start loading images in your app you'll see it grow. When it reaches 16 (for 320x480 devices) or 24 (for larger devices) Mb, you'll get an OutOfMemory error
回答3:
sergiu posted some code here: How do I detect the heap size usage of an android application
来源：https://stackoverflow.com/questions/4516645/how-can-i-see-how-much-memory-my-app-is-using-out-of-its-vm-budget