Autocomplete textview android-CodePudding

I am new to android developer.I want to know it is possible to set the selected item’s background of autocomplete text view drop-down menu.I try so many ways but the color change only when click.I can’t use spinner can use only autocomplete textview for school project. Below is example photo.

When drop-down pop up I want selected item with background color.please help!

CodePudding user response：

Your main layout

<com.google.android.material.textfield.TextInputLayout
    style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.ExposedDropdownMenu"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="16dp"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">

    <AutoCompleteTextView
        android:id="@ id/autoCompleteTextView"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:inputType="none"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:ignore="LabelFor" />

</com.google.android.material.textfield.TextInputLayout>

Create an drop_down_style.xml layout in your resources. Add following view...

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@ id/drop_down_text"
    style="?android:attr/dropDownItemStyle"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#C0C000"
    android:gravity="center"
    android:padding="5dp" />

Update your ArrayAdapter as following

List<String> dataList = new ArrayList<>();
dataList.add("1");
dataList.add("2");
dataList.add("3");
dataList.add("4");


AutoCompleteTextView view = findViewById(R.id.autoCompleteTextView);
ArrayAdapter<String> myAdapter = new ArrayAdapter<>(this, R.layout.drop_down_style, R.id.drop_down_text, dataList);
view.setAdapter(myAdapter);

CodePudding user response：

[enter image description here][1]

[1]: https://i.stack.imgur.com/pWG8x.pngstrong text