Hi there, It sounds like your project hadn't been compiled.
The R class is Android Resource management class and is automatically generated when an Android project is compiled. R.layout.main basically means the layout file /res/layout/main.xml. Android has a declarative layout concept so you can declare your layout in XML which is what the main.xml file is doing. Uncomment the lines you have commented and try cleaning your project and rebuilding it. You should find that the R class is created in the / bin folder. In terms of the emulator it can take a while to start up and the screen you describe is the emulator starting. Try waiting a little longer and you should be presented with the Android OS and all things going well your application will automatically startup. Declaring layout: http://developer.android.com/guide/topics/ui/declaring-layout.html Providing resources: http://developer.android.com/guide/topics/resources/providing-resources.html Eggsy On Nov 15, 7:51 pm, Houston startup coder <[email protected]> wrote: > I'm on Mac OS X Leopard and installed the ADT plugin into Eclipse > Galileo. I followed all these steps to get started: > > http://developer.android.com/sdk/index.html > > My SDK version is 2.2 API 8 revision 2 and I just used the Hello World > tutorial found here: > > http://developer.android.com/resources/tutorials/hello-world.html > > When I first created the Android application, I saw this error in the > Eclipse console: > > [2010-11-13 18:20:43 - HelloAndroid] ERROR: Unable to open class > file / > Users/mydirectory/Documents/workspace/HelloAndroid/gen/com/example/ > helloandroid/R.java: No such file or directory > > I commented out this line to fill in the few lines from the tutorial: > > setContentView(R.layout.main); > > When I ran the app, it launched my emulator but all I saw was a > vertical screen on the left that said "ANDROID" and phone buttons on > the right. I did not see the "Hello, Android" text from the > tutorial. > > Any ideas? -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
