AndroidStudyMemo (Resource)＝Instrumentation

http://developer.android.com/reference/android/app/Instrumentation.html

Base class for implementing application instrumentation code. When running with instrumentation turned on, this class will be instantiated for you before any of the application code, allowing you to monitor all of the interaction the system has with the application. An Instrumentation implementation is described to the system through an AndroidManifest.xml's <instrumentation> tag.