title: Couldn't resolve resource @drawable/homebackground
body: <p>I created a new project in <strong>Android Lollipop</strong> (API 21) using Studio(64) and Java 7. When I try to add a background on main layout (relative layout) I am getting error</p>
  
  <p><img src="https://i.stack.imgur.com/ESHqn.png" alt="enter image description here"></p>
  
  <p>My res folder structure is </p>
  
  <p><img src="https://i.stack.imgur.com/e2Ywo.png" alt="enter image description here"></p>
  
  <p>NOTE: I have placed 720x1280 img in all drawable* folders.</p>
  
  <p>My XML is </p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
      android:layout_height="match_parent"
      tools:context=".MainActivity"
      android:padding="0dp"
      android:background="@drawable/homebackground"&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>I tried using PNG / JPG.. but still I am getting same error. <strong>Can someone tell where am I going wrong ?</strong></p>
  
  <hr>
  
  <p>I referred these, but they are not related to my problem or don't solve my problem</p>
  
  <p><a href="https://stackoverflow.com/questions/21542573/couldnt-resolve-resource-drawable-backround-png">Couldn&#39;t resolve resource @drawable/backround.png</a></p>
  
  <p><a href="https://stackoverflow.com/questions/8390733/relativelayout-couldnt-resolve-resource-android">RelativeLayout &quot;Couldn&#39;t resolve resource...&quot; Android</a></p>
  
  <p><a href="https://stackoverflow.com/questions/21358776/android-image-cant-convert-to-drawable">Android image can&#39;t convert to drawable</a></p>