title: Please help. Trying to make simple tic tac toe app with android studio. getting error
body: <p>Ok so I am trying to make a tic tac toe game with android studio. I'm running into an error when trying to run the app </p>
  
  <pre><code>Error:(119, 69) error: cannot find symbol variable lib_bg. 
  </code></pre>
  
  <p>I have searched high and low and can't figure out what the problem is. It is referring to a <strong>R.java</strong> file which is self generated which confuses me but obviously can't find these <em>.png</em> image files. I have confirmed these image files are in the project archive. The r.java file doesn't reference anything to these files. I'm lost please help!</p>
  
  <pre><code>       public GameView(Context context, AttributeSet attrs) {
      super(context, attrs);
      requestFocus();
  
      Drawable mDrawableBg = getResources().getDrawable(R.drawable.lib_bg);
      //noinspection deprecation
      setBackgroundDrawable(mDrawableBg);
  
      mBmpPlayer1 = getResBitmap(R.drawable.lib_cross);
      mBmpPlayer2 = getResBitmap(R.drawable.lib_circle);
  </code></pre>