What this essentially means is that instead of creating things like user interfaces and strings in code, you create an XML file to hold this information under the ‘res’ project directory.The Eclipse ADT plugin handles actually holding references to all these resources via the R class, which is re-generated whenever a new resource is defined or the project is rebuild and is held under the ‘gen’ project directory. For example, say I had defined a simple Activity layout called “maingui” and tried to reference this in my Activity start up code like so: – The first thing you might notice is that the file under your Eclipse project is missing.I even tried to update eclipse ADT Build: v22.6.2-1085508 but does not update maybe because is portable as is in the office) package com.example.last; import android.support.v7
I am running Eclipse 4.2.2 Juno on Windows 64-bit for development on Android SDK 17 with ADT.
Just today, I cleaned a working project, only to find that the file would no longer generate.
Creating a new "drawables" folder causes Eclipse to throw an error because it would technically lead to a duplicate class - hence the little red cross on your "drawables" folder.
You should move all your images into one of these pre-existing folders then delete the drawables folder you created.
Under Eclipse, go to: – to import your R resource into your project for easy referencing.
However, this isn’t the R file including in your project package.R" statement, XML errors, corruption requiring cleaning and rebuilding, and checking the Android SDK in Project - Java Build Path / Libraries. The only remaining possibility within Gray's list seems to be that either my or Android is broken, so I have included them to make sure I didn't miss any errors. If so follow the below Right click on your project goto properties. Check the error console in your IDE to figure out what's specifically wrong.My main layout: First check if there are any errors in your resource file's. Common problems are: In addition to what Reghunandan said, I just had the same issue after updating to SDK 22 with Eclipse Indigo Win x64.This problem has a very divergent list of possible causes.User Gray, in response to the thread located here, listed a set of articles, all addressing different possible causes. Also goto android sdk manager and check that you have the android sdk build tools installed.He says: And then proceeds to list articles pertaining to different causes of this problem, the links to which I am unable to include, but can be found in the question linked to above. This many not be necessary but make sure you have android build tools installed.