What is the function of aapt.exe in Android?


When i list the running processes under windows 7, about 20 aapt.exe processes are showing and they take a lot of memory. This happens when android studio is opened. I am always forced to exit android studio and open it again. How can remedy the situation while leaving android studio running? And what is the function of aapt.exe? I have android studio

aapt.exe is the Android Asset Packaging Tool (aapt). It's designed to take your application resource files, such as the AndroidManifest.xml file and other XML files used for every "Activity" in your Android app, and compile them. An R.java is generated so you can reference your resources from your Java code.

More details here.