AutoCompleteText not update popup background-CodePudding

I am using AppCompatAutoCompleteTextView but I cannot change the background of the dropdown list or neither the color of the background of the selector. I tried color or drawable but nothing change.

     <androidx.appcompat.widget.AppCompatAutoCompleteTextView
                    android:id="@ id/topicEt"
                    android:layout_width="match_parent"
                    android:layout_height="48dp"
                    android:layout_marginTop="4dp"
                    android:background="@drawable/corner_shape_spinner_darkness"
                    android:dropDownHeight="wrap_content"
                    android:hint="@string/support_select_topic"
                    android:inputType="none"
                    android:editable="false"
                    android:paddingStart="12dp"
                    android:textAppearance="@style/Body_12"
                    android:textColor="@color/white"
                    android:textColorHint="@color/gray200"
                    android:drawableEnd="@drawable/dropdown_icon_selector"
                    android:paddingEnd="14dp"
                    android:dropDownSelector="@color/lightness100"
                    android:popupBackground="@color/darkness100"/>

Any idea ?

CodePudding user response：

The background color of the dropdown list in the AppCompatAutoCompleteTextView can be changed by setting the popupBackground attribute. However, if you're unable to change the background color, try the following:

Step 1: Create a custom drawable for the popup background and set it using the popupBackground attribute.

<androidx.appcompat.widget.AppCompatAutoCompleteTextView
                ...
                android:popupBackground="@drawable/custom_popup_background"
                ... />

Step 2: Create a custom dropdown selector and set it using the dropDownSelector attribute.

<androidx.appcompat.widget.AppCompatAutoCompleteTextView
                ...
                android:dropDownSelector="@drawable/custom_dropdown_selector"
                ... />

Try these steps and let me know if it helps.

CodePudding user response：

You can change the AppCompatAutoCompleteTextView selector background with app:backgroundTint attribute.

And change the background of the dropdown list programmatically with either:

autoCompleteTV.setDropDownBackgroundDrawable(ColorDrawable(Color.RED))
autoCompleteTV.setDropDownBackgroundResource(resourceId) // takes a color/drawable resource