ArrayAdapter requires the resource ID to be a TextView

List<String> list = new ArrayList<String>();
        list.add("张三");
        list.add("lisi");
        list.add("wangwu");
        list.add("张三");
        ArrayAdapter adapter = new ArrayAdapter(this,R.layout.item,list);
        
        spLB.setAdapter(adapter);

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    
    <TextView
        android:id="@+id/textItem"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=".."
        ></TextView>
</LinearLayout>