id/reference missing in main in Java,android
<p>after declaring button in XML, adding button description in main.java</p>

<p>but in my pc there is no reference/id of the button.i'm novice at thise plz help me how to solve it.</p>

<p>moreover while declaring there is a warning [I18N] Hardcoded string "Button", should use @string resource
is this the problem</p>

<p>please help me.</p>
