First time poster!
I am new to Android development and have been following Google\'s HelloView tutorials without problems... until the HelloGridView tutorial. For some r
Usually, in these cases, a clean and rebuild of the project will resolve the problem. It is possible that replacing the images simply forced your R file to refresh.
If not, my only other thought is that android only supports baseline and progressive jpegs. If your jpeg had some sort of weird optimisation on it, that could have made for an invalid resource.