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Thomas Moore
4,275 Pointsdoing the Android Development Track. When I try to run the first app "package R does not exist". What do?
Have followed the steps exactly. First time running app and I get this error.
6 Answers
Thomas Moore
4,275 PointsTHANK YOU. Running the Update on Eclipse seems to have solved the problem.
Excited to continue the course now haha
Nathan Bird
2,189 PointsThis has happened to me twice. The R.java file just flat out goes missing. (I end up copying and pasting most of the code into a new project.)
Ben Jakuben
Treehouse TeacherDo you get any errors when it disappears? Here's one suggestion you can try: http://stackoverflow.com/a/17314800/475217
Nathan Bird
2,189 PointsWhen I'm use the findViewById(R.id.someId) method there is no R file so I get an error. That's all.
Nathan Bird
2,189 PointsI think it's the same problem as Thomas' because in the Fun Facts project there are 3 findViewById() calls which would explain the 3 errors. The fourth error is just saying the app compilation failed.
Ben Jakuben
Treehouse TeacherLooks like something isn't building correctly in your project. Do you get any kind of errors or warnings in any of the panes at the bottom of Android Studio? What happens if you click on Build > Make Project?
Thomas Moore
4,275 Points"Gradle build finished with 4 errors" "'Cannot resolve symbol R"
I want to say it's something going wrong with my java installation because the javac -version command still returns an error...
Ben Jakuben
Treehouse TeacherOkay, click on the Gradle Console in the lower right to see what Gradle errors you have. It could definitely be related to a Java error, but hopefully the gradle errors will help track it down. (You should have other errors running Android Studio if something is wrong with Java.)
Thomas Moore
4,275 PointsIt's three "package R does not exist"s and one "Error:Execution failed for task ':app:compileDebugJava'.
Compilation failed; see the compiler error output for details."
Ben Jakuben
Treehouse TeacherI've seen that error, but don't know exactly what is causing it without some code. Can you paste in the contents of your file build.gradle in the app module of your project?
Which video are you at? Have you changed any code, or is it failing to run the very first time?
Thomas Moore
4,275 PointsI'll try that later this afternoon.
This is the very first build. No code has been altered. It fails to run from the very beginning.