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 savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);          sub = (Button) findViewById(R.id.btn_submit);         sub.setOnClickListener(new View.OnClickListener() {              @Override             public void onClick(View v) {                  username = (EditText) findViewById(R.id.uname);                 password1 = (EditText) findViewById(R.id.editText2);                 uname = (String) username.getText().toString();                 pass = (String) password1.getText().toString();                  if (uname.equalsIgnoreCase("uname"))                     if (pass.equalsIgnoreCase("pass"))                         Toast.makeText(main.this, "user is authenticated", Toast.LENGTH_LONG).show();                     else                         Toast.makeText(main.this, "Password Invalid", Toast.LENGTH_LONG).show();                 else                     Toast.makeText(main.this, "User or Password Invalid", Toast.LENGTH_LONG).show();             }         });     } } 

code showing the following error..

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

Answer 1

Try removing the capital letter. res\layout\contactus.xml