Required files in the Android project

The res directory, src directory, and androidmanifest.xml files are required for Android projects. Other directories and other files are optional.
The Res directory holds various resource files for Android projects, such as layout files, and resource files in various XML formats under the values directory, such as string resource files: string.xml; color resource files: colors.xml; Size resource file: Dimens.xml.
The SRC directory is just a normal directory where Java source files are saved.
The Androidmanifest.xml file is a system manifest file for Android projects that controls the overall properties of the Android app's name, icon, access rights, and so on.
Bin: This directory is used to store the generated target files, such as Java binaries, resource packaging files (. AP_ suffixes), executable files (. dex suffixes) of the Dalvik virtual machine, and so on.
Gen: This directory is used to save an R.java manifest file that is automatically generated by Android.

The androidmanifest.xml manifest file can usually protect the following information:
The package name of the application, which will be the unique identity of the app.
The components that the application contains, such as activity, Service, Broadcastreceiver, ContentProvider, and so on.
The minimum version that is compatible with the application.
The application uses the permission declarations required by the system.
The permission declarations that are required by other programs to access the program.

Required files in the Android project