title: error :cannot find symbol variable fullscreen_content_controls,fullscreen_content and dummy_button
body: <p>`</p>
  
  <pre><code>&lt;EditText
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/editText"
      android:text="USERNAME"
      android:background="#9E9E9E"
      android:layout_centerVertical="true"
      android:layout_alignStart="@+id/editText2"
      android:layout_alignEnd="@+id/editText2" /&gt;
  
  &lt;EditText
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:inputType="textPassword"
      android:ems="10"
      android:id="@+id/editText2"
      android:text="\NPASSWORD"
      android:background="#9E9E9E"
      android:layout_below="@+id/textView2"
      android:layout_alignParentEnd="true" /&gt;
  
  &lt;Button
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="REGISTER"
      android:id="@+id/button"
      android:layout_alignParentBottom="true"
      android:layout_alignEnd="@+id/editText2"
      android:layout_marginEnd="51dp"
      android:layout_marginBottom="49dp" /&gt;
  
  &lt;Button
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="SIGNIN"
      android:id="@+id/button2"
      android:layout_alignTop="@+id/button"
      android:layout_toStartOf="@+id/editText2" /&gt;
  
  &lt;TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:textAppearance="?android:attr/textAppearanceLarge"
      android:text="             \n           \n                             CBTT      \n \n"
      android:textColor="#FFFFFF"
      android:background="#3F51B5"
      android:id="@+id/textView"
      android:layout_alignParentEnd="true"
      android:layout_alignParentStart="true"
      android:layout_alignParentTop="true" /&gt;
  
  &lt;TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:textAppearance="?android:attr/textAppearanceLarge"
      android:text=" USERNAME \n"
      android:textColor="#000000"
      android:id="@+id/textView2"
      android:layout_centerVertical="true"
      android:layout_alignEnd="@+id/textView3" /&gt;
  
  &lt;TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:textAppearance="?android:attr/textAppearanceLarge"
      android:text=" PASSWORD"
      android:textColor="#000000"
      android:id="@+id/textView3"
      android:layout_alignBottom="@+id/editText2"
      android:layout_alignParentStart="true" /&gt;
  &gt;\
  </code></pre>
  
  <p>
  `   ![I don't change any code in Java I don't know what's the issue][1]
      I have not used any code in Java don't  know what's the issue the above code is my layout xml
      [1]: <a href="http://i.stack.imgur.com/y90xP.png" rel="nofollow">http://i.stack.imgur.com/y90xP.png</a></p>