Question

I’m developing my very first app on Android, and just by following the “Android Training” I ended in this trouble. I did read it’s something with the libs, but I really don’t understand how to fix it.
The target for this project is Android 2.3.3 (API 10), and I put the “android-support-v4.jar” in the /libs folder, expecting the ant to compile against it automatically with the Android defaults.
Not working. Ant tells errors like this one:

 .......\test1\ActividadPrincipal.java:20: error: cannot find symbol
 [javac]     public void sendMessage (view view)
 [javac]                              ^
 [javac]   symbol:   class view
 [javac]   location: class ActividadPrincipal

Answer 1

Welcome to StackOverflow!

Class names start with a capital letter. It cannot find the class view with a non-capital letter.
Make it (View view).

You should also import the View class in your Activity (at the top):

import android.view.View;