I'm just starting to look into developing android apps and don't currently own one, but it says it here:
http://developer.android.com/guide/t...damentals.html
I'm no expert on this, but yes, it sounds like android will kill the app if it runs low on resources. HOWEVER, I dont think it means it is the most power efficient. I could make an app that makes the screen always on and full brightness, constantly use data, wifi, gps, etc. It wouldn't use alot of memory but it would drain the battery.
So I would think that you would still want to kill an app that you do not need running if it constantly uses power. But if its some standalone thing that doesnt do anything, I dont think it hurts to keep it running.
For example, if you have an email app set to check email every 5 seconds, it will uses alot of power vs having it check every 5 hours. But it may not use that much memory.
I'm guessing here, so someone can correct me if I'm wrong.
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