title: Place button over Image View bottom Line
body: <p>I'm using FrameLayout and want to place the button exactly like this:</p>
  
  <p><img src="https://i.stack.imgur.com/IzANL.png" alt="Sketch"></p>
  
  <p>How can I do this in XML? The button needs to be over the bottom of the image view always.</p>
  
  <p>Here's my xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"&gt;
  
          &lt;ImageView
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:layout_alignParentTop="true"
              android:layout_alignParentLeft="true"
              android:layout_alignParentStart="true"
              android:adjustViewBounds="true"
              android:scaleType="fitCenter"/&gt;
  
          &lt;Button
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_centerHorizontal="true"
              android:layout_alignParentBottom="true"
              android:layout_centerInParent="true" /&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>