Android | Running your first Android app After successfully Setting up an Android project , all of the default files are created with default code in them. Let us look at this default code and files and try to run the default app created. The panel on the left side of the android studio window has all the files that the app includes. Under the java folder , observe the first folder containing the java file of your project. "> For every activity, a “.java” file and a “.xml” file is created. In this case for MainActivity, “MainActivity.java” and “activity_main.xml” are created. The above java file shows us the default code that is present when an app is created. An activity is created that extends AppCompactActivity class. The “ res ” folder contains “ layout ” subfolder, which includes the xml files of the projects. "> You can find the activity_main.xml file under the layout folder. This the XML file corresponding to the MainActivity. There is an onCreate function...
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