I didn't find any answer on this. Because i want to use imeoption as actionSearch and then i want my autocomplete to behave like multiline EditText
.
So, I remove actionsearch as an ime option and place multiline. It's not what i want but still satisfy atleast achieve 50%.
<AutoCompleteTextView
android:id="@+id/txtTags"
android:layout_width="fill_parent"
android:layout_height="44dip"
android:layout_marginLeft="12dip"
android:layout_marginRight="12dip"
android:background="@drawable/borderforloginedittext"
android:hint="eg: Breakfast, spicy, italian "
android:inputType="textPersonName|textMultiLine"
android:paddingLeft="70dp"
android:dropDownHeight="fill_parent"
android:dropDownWidth="match_parent"
android:textColor="#333333"
android:textColorHint="#999999"
android:textSize="16sp" >
</AutoCompleteTextView>
This code provide me one option to use multiline.