How to show AutoCompleteTextView suggestions in landscape orientation

@vamsiampolu answer is correct but if you want to use same by using java, you can use

    itemautoTxt.setImeOptions(EditorInfo.IME_FLAG_NO_EXTRACT_UI);

where itemautoTxt is AutoCompleteTextView

hope this will helpful to others.

In the layout where you defined your AutoCompleteTextView use android:imeOptions=flagNoExtractUi

The flag prevents the element from going full-screen when it is rotated to landscape mode.

Firstly, set this android:imeOptions="flagNoExtractUi" in XML.

Secondly, your dropdown may be under your keybord or above it. So it may not fit on screen - appear below or above the visible area of the screen. To fix this use android:dropDownAnchor="@id/your_view" to pin dropdown to the required view.

Thirdly, the dropdown may not appear on some devices or may appear unstable.