res\layout\Contact_us.xml: Invalid file name: must contain only [a-z0-9_.]

Question

public class main extends Activity {

    EditText username,password1;
    Button sub;
    String uname,pass;

    @Override
    public void onCreate(Bundle savedIns         


        

Answer 1

it should be contactus.xml, You should follow below listed naming convention:

File name must contain only lowercase a-z, 0-9, or _.

only a-z,mind that not capital...and white-space not allowed

name must start with a character.not with a Number(0-9)

name only _ symbol allowed.no other symbol alowed.