Cannot Resolve R in Android Studio . Tried all the standard solutions

Question

I cannot Resolve R: Here is what my Code look like which is posted in a screenshot.

The first solution I tried was: Going to Build and Rebuild, that didn't seemed to work.

The second solution was: Tools==>Android==>Sync Project with Gradle Files.

None of those solutions worked. What do you guys suggest?

Answer 1

What do you guys suggest?

Well, the error tells you exactly what the problem is. dog shirt.jpg has an invalid character (a space, it looks like). Rename that file to use lowercase letters ( a through z ), digits ( 0 through 9 ), and underscores for the base name (the part before the .jpg ).