R.java is not created for a new Android project

Question

When I create a new android project in Eclipse and I prefer to have the main action by default, my R.java file is not generated.

I saw some questions online and on this site that R.java is not being created, but all because of some manual actions / errors that needed to be fixed during application development.

However, does anyone know why R.java will not be created for a completely new android project, where I did not make any changes manually?

Answer 1

I think your problem is the latest SDK update.

Verify the following operations on two projects:

• In the project properties (eclipse) -> java build path -> order and export, make sure that all your banks in the libs folder are checked.
• And "Android Tools → Fix Project Properties"
• And "Project → Clean"

Hope you helped!

Answer 2

ADT version 22 requires you to install "build tools." To make it work, I had to update:

• SDK Tools
• Platform tools

Then install:

• Build tools

This link recommends adding build tools to your environment path. I had to do the following before creating R.java:

• Add build tools to the PATH environment variable
• Restart Eclipse.

Answer 3

Make sure there are no errors or problems in your project. You can use Windows-View to find and fix it. Common errors are contained in the layout files. Check the AndroidManifest file and see if the activity names correspond to the classes in the source folder. Clean and restore.

Answer 4

R.java is created every time you create an android project for the first time r.java created by default

therefore, check for errors and clean the project.