The applying runtime The 3rd surroundings is the single within which your software runs — for this reason, one of many Android emulators. In constructing your improvement surroundings — both should you put in the SDK or if you happen to arrange the ADT plug-in — you place up a number of Android digital units (AVDs). for those who create a brand new Android venture you affiliate it with one of many AVDs. The plug-in makes use of the correct profile to establish either the compilation surroundings and the emulator used for working the appliance, lowering the opportunity for a mismatch among the runtime surroundings: an program compiled opposed to the Android 2. 2 libraries would possibly not run on a 1. five platform. tasks For software program builders, Eclipse tasks correspond to courses they're constructing. For Android software program builders, they correspond to Android purposes. inside Eclipse, initiatives are how Eclipse plug-ins be aware of which software program to function on: in case you create an Android venture, the venture facts contains info that Eclipse makes use of to choose code from numerous plug-ins to accomplish a number of operations. The ADT plug-ins are invoked to aid create a undertaking with definitely the right set of documents and listing constitution for an Android software. in case you paintings at the records in an Android undertaking, the precise editors are used if you open XML documents resembling layouts and the take place. in the event you alter records in a venture, definitely the right developers are known as to construct the appliance. developers and Artifacts The Eclipse framework defines the idea that of a “builder,” used to generate undertaking artifacts from their assets. Artifacts are records equipped from resource documents. The Android Eclipse plug-in defines a number of new developers that create . dex documents from . category records, create Java constants that establish assets laid out in XML, create . apk records, and practice different Android-specific operations which are a part of turning code into an installable package deal. Eclipse will regenerate the installable program everytime you make adjustments. you'll want to consistently be capable of run it or debug it. The transformation of . category documents, that are the output of the Java compiler, to . dex documents, that are bytecode interpreted through the Dalvik VM, is a neat trick: it helps you to application in Java, utilizing the very hugely constructed modifying and refactoring instruments, in addition to a variety of different instruments created to augment the productiveness and reliability of Java coding. Extensions Extensions are all of the locations the place a plug-in extends Eclipse performance. You won’t control or switch extensions as an Android software program developer, yet whereas we've got that Plug-ins view open, let’s take a quick examine the various extensions the Android plug-ins upload. it will offer you a extra concrete thought of the connection of the ADT plug-ins and the remainder of the Eclipse approach. within the Plug-ins view, as proven in determine 5-2, double-click at the plug-in named com. android. ide. eclipse. adt and you may see an Extensions view, directory the extensions within the plug-in, as proven in determine 5-3.