termux-shared/src/main/res/layout/activity_text_io.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <include
        layout="@layout/partial_primary_toolbar"
        android:id="@+id/partial_primary_toolbar"/>

    <TextView
        android:id="@+id/text_io_label"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="@dimen/content_padding"
        android:gravity="start|center_vertical"
        android:textSize="14sp"
        android:textStyle="bold"
        android:textColor="@android:color/black"
        android:visibility="invisible" />

    <View
        android:id="@+id/text_io_label_separator"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginHorizontal="@dimen/content_padding"
        android:background="@android:color/darker_gray"
        android:visibility="invisible" />



    <androidx.constraintlayout.widget.ConstraintLayout
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <!-- id must be assigned to scroll views to restore scroll position automatically on activity resume -->
        <androidx.core.widget.NestedScrollView
            android:id="@+id/text_io_nested_scroll_view"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:padding="@dimen/content_padding_half"
            android:fillViewport="true"
            app:layout_constraintBottom_toTopOf="@+id/text_io_text_character_usage"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">

                <HorizontalScrollView
                    android:id="@+id/text_io_horizontal_scroll_view"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:fillViewport="true">

                    <LinearLayout
                        android:id="@+id/text_io_text_linear_layout"
                        android:layout_width="wrap_content"
                        android:layout_height="match_parent"
                        android:orientation="vertical">

                        <EditText
                            android:id="@+id/text_io_text"
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:gravity="start|top"
                            android:inputType="textMultiLine"
                            android:importantForAutofill="no"
                            tools:ignore="LabelFor" />
                    </LinearLayout>

                </HorizontalScrollView>
            </LinearLayout>
        </androidx.core.widget.NestedScrollView>

        <TextView
            android:id="@+id/text_io_text_character_usage"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingEnd="@dimen/content_padding_half"
            app:layout_constraintBottom_toBottomOf="parent"
            android:gravity="end|center_vertical"
            android:textSize="12sp"
            android:textColor="@android:color/black"
            android:visibility="invisible" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</LinearLayout>