设计库本身就够了

包括这样

<android.support.design.widget.TextInputLayout
    android:id="@+id/til_id"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="125dp"
    >

    <AutoCompleteTextView
        android:id="@+id/auto_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:enabled="false"
        android:hint="Id"

        android:singleLine="true"/>
</android.support.design.widget.TextInputLayout>