Main directories and files of Android projects

Main directories and files of Android projects

Every Android project necessarily have these files and directories.

1. AndroidManifest.xml file  -Explain fundamental characteristic of app and defines each of its components.
2. src/  -it is the directory of main source file and by default includes an Activity class which run when app is running.
3. res/  -it contain sub directories of application resources. 

• drawable-hdpi/ - stores drawable objects in directory designed for high density screen.
• drawable-mdpi/- stores drawable objects in directory designed for medium density screen.
• drawable-ldpi/- stores drawable objects in directory designed for low density screen.
• layout/ -it is the directories which defines user interface.
• value/- contain various xml file which contain collection of resources.