The import android.* cannot be resolved for drag and drop example
<p>I am new to java and android.I am following and making app from <a href="http://www.vogella.com/articles/AndroidDragAndDrop/article.html#dialog" rel="nofollow">here</a> for drag and drop.</p>

<p>the following files are giving error of cannot be resolved.</p>

<pre><code>import android.view.View.DragShadowBuilder;
import android.view.View.OnDragListener;
import android.view.DragEvent;
import android.content.ClipData;
</code></pre>

<p>I know that means the above mentioned classes are not present in main library. how should i add them or is there alternate way of doing drag and drop(please explain with give examples). </p>
