fedilab-Android-App/app/src/main/res/layout/datetime_picker.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
    Copyright 2017 Thomas Schneider

    This file is a part of Fedilab

    This program is free software; you can redistribute it and/or modify it under the terms of the
    GNU General Public License as published by the Free Software Foundation; either version 3 of the
    License, or (at your option) any later version.

    Fedilab is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
    the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
    Public License for more details.

    You should have received a copy of the GNU General Public License along with Fedilab; if not,
    see <http://www.gnu.org/licenses>.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <DatePicker
        android:id="@+id/date_picker"
        android:layout_width="match_parent"
        android:calendarViewShown="true"
        android:gravity="center"
        android:spinnersShown="false"
        android:layout_height="wrap_content" />
    <TimePicker
        android:visibility="gone"
        android:gravity="center"
        android:id="@+id/time_picker"
        android:layout_weight="4"
        android:layout_width="match_parent"
        android:layout_height="0dp" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="horizontal">
        <Button
            android:id="@+id/date_time_cancel"
            android:layout_width="wrap_content"
            android:text="@string/cancel"
            android:layout_height="40dp"
            style="@style/Base.Widget.AppCompat.Button"
             />
        <ImageButton
            android:layout_marginStart="10dp"
            android:layout_marginLeft="10dp"
            android:visibility="gone"
            android:id="@+id/date_time_previous"
            android:layout_width="40dp"
            android:src="@drawable/ic_skip_previous"
            android:layout_height="40dp"
            style="@style/Base.Widget.AppCompat.Button"
            android:contentDescription="@string/previous" />
        <ImageButton
            android:id="@+id/date_time_next"
            android:layout_marginStart="10dp"
            android:layout_marginLeft="10dp"
            android:src="@drawable/ic_skip_next"
            android:layout_width="40dp"
            android:layout_height="40dp"
            style="@style/Base.Widget.AppCompat.Button"
            android:contentDescription="@string/next"/>
        <ImageButton
            android:visibility="gone"
            android:layout_marginStart="10dp"
            android:layout_marginLeft="10dp"
            android:id="@+id/date_time_set"
            android:src="@drawable/ic_check"
            android:layout_width="40dp"
            android:layout_height="40dp"
            style="@style/Base.Widget.AppCompat.Button"
            android:contentDescription="@string/validate"/>
    </LinearLayout>

</LinearLayout>