loop/uhabits-android/src/main/res/layout/activity_sync.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2016-2021 Álinson Santos Xavier <git@axavier.org>
  ~
  ~ This file is part of Loop Habit Tracker.
  ~
  ~ Loop Habit Tracker 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.
  ~
  ~ Loop Habit Tracker 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 this program. If not, see <http://www.gnu.org/licenses/>.
  -->

<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="?attr/highContrastReverseTextColor"
    android:fitsSystemWindows="true"
    android:orientation="vertical"
    tools:context=".activities.habits.edit.EditHabitActivity">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="?attr/colorPrimary"
            android:elevation="2dp"
            android:gravity="end"
            android:minHeight="?attr/actionBarSize"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            app:title="@string/device_sync"
            app:titleTextColor="@color/white">

        </androidx.appcompat.widget.Toolbar>

    </com.google.android.material.appbar.AppBarLayout>

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:paddingLeft="4dp"
            android:paddingTop="8dp"
            android:paddingRight="4dp">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:lineSpacingExtra="4sp"
                android:padding="8dp"
                android:paddingBottom="16dp"
                android:textSize="@dimen/regularTextSize"
                android:id="@+id/instructions"
                />

            <!-- Sync Link (QR) -->
            <FrameLayout style="@style/FormOuterBox">

                <LinearLayout
                    style="@style/FormInnerBox">
                    <TextView
                        style="@style/FormLabel"
                        android:translationZ="0.01dp"
                        android:text="@string/sync_link_qr" />

                    <LinearLayout
                        android:id="@+id/errorPanel"
                        android:layout_width="match_parent"
                        android:layout_height="200dp"
                        android:orientation="vertical"
                        android:gravity="center">

                        <TextView
                            android:id="@+id/errorIcon"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:textSize="40dp"
                            android:layout_margin="40dp"
                            android:text="@string/fa_exclamation_circle" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="Error generating code. Please try again later."
                            />
                    </LinearLayout>

                    <ProgressBar
                        android:id="@+id/progress"
                        android:layout_width="50dp"
                        android:layout_height="200dp"
                        android:layout_gravity="center"
                        android:indeterminate="true"
                        />

                    <ImageView
                        android:id="@+id/qrCode"
                        android:layout_margin="10dp"
                        android:layout_width="200dp"
                        android:layout_height="200dp"
                        android:layout_gravity="center"
                        />
                </LinearLayout>
            </FrameLayout>

            <!-- Sync Link -->
            <FrameLayout style="@style/FormOuterBox">

                <LinearLayout style="@style/FormInnerBox">

                    <TextView
                        style="@style/FormLabel"
                        android:text="@string/sync_link" />

                    <TextView
                        android:id="@+id/syncLink"
                        style="@style/FormInput"
                        android:singleLine="true"
                        android:text=""
                        android:background="@drawable/ripple"
                        android:textSize="@dimen/smallTextSize"
                        android:layout_margin="8dp"
                        />
                </LinearLayout>
            </FrameLayout>
        </LinearLayout>
    </ScrollView>

</androidx.coordinatorlayout.widget.CoordinatorLayout>