mihon/app/src/main/res/layout/pref_library_columns.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:app="http://schemas.android.com/apk/res-auto"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:orientation="horizontal"
              android:paddingBottom="@dimen/dialog_content_padding"
              android:paddingLeft="@dimen/dialog_content_padding"
              android:paddingRight="@dimen/dialog_content_padding"
              android:paddingTop="@dimen/dialog_margin_top_content">

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/portrait"/>

        <eu.kanade.tachiyomi.widget.MinMaxNumberPicker
            android:id="@+id/portrait_columns"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:descendantFocusability="blocksDescendants"
            app:max="10"
            app:min="0"/>

    </LinearLayout>

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/landscape"/>

        <eu.kanade.tachiyomi.widget.MinMaxNumberPicker
            android:id="@+id/landscape_columns"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:descendantFocusability="blocksDescendants"
            app:max="10"
            app:min="0"/>

    </LinearLayout>

</LinearLayout>