title: Cannot scroll dropdown list of AutoCompleteTextView on Android
body: <p>I have an <code>AutoCompleteTextView</code>on an <code>AlertDialog</code>. The dropdown list with the suggestions gets partly covert by the keyboard (see screenshot). The result is that I cannot scroll the list.</p>
  
  <p><img src="https://i.stack.imgur.com/sp1Wx.png" alt="enter image description here"></p>
  
  <p>I already managed to move the dialog to the top of the screen to get more space. When I set <code>android:dropDownHeight</code> to a small value like 150dp the dropdown list is not covert by the keyboard anymore and scrolling works just fine but setting <code>dropDownHeight</code> to a fix value doesn't seem to be a good solution. I want to avoid using "magic numbers" because otherwise I have no guarantee that it will work on all screens.</p>
  
  <p>How can I solve this?</p>