如何在xml中自动导入“xmlns”Http...pk/res-auto“？或者如何创建包含此”xmlns:app=：app“方案的模板xml？

xmlns:app="http://schemas.android.com/apk/res-auto"

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    ...>
    ...
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:customAttribute="value" />
    ...
</LinearLayout>

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    ...>
    ...
</LinearLayout>