FairEmail/app/src/main/res/layout/fragment_setup.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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:orientation="vertical"
    tools:context=".ActivityView">

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <!-- account -->

        <Button
            android:id="@+id/btnAccount"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:text="@string/title_setup_account"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <ProgressBar
            android:id="@+id/pbAccount"
            style="@style/Base.Widget.AppCompat.ProgressBar"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_marginStart="12dp"
            android:indeterminate="true"
            app:layout_constraintBottom_toBottomOf="@id/btnAccount"
            app:layout_constraintStart_toEndOf="@id/btnAccount"
            app:layout_constraintTop_toTopOf="@id/btnAccount" />

        <TextView
            android:id="@+id/tvAccount"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/title_setup_account_remark"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/btnAccount" />

        <TextView
            android:id="@+id/tvAccountDone"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/title_setup_done"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvAccount" />

        <Button
            android:id="@+id/btnAccountManage"
            style="?android:attr/buttonStyleSmall"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:minHeight="0dp"
            android:minWidth="0dp"
            android:text="@string/title_setup_account_manage"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvAccountDone" />

        <!-- identity -->

        <Button
            android:id="@+id/btnIdentity"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:text="@string/title_setup_indentity"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/btnAccountManage" />

        <ProgressBar
            android:id="@+id/pbIdentity"
            style="@style/Base.Widget.AppCompat.ProgressBar"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_marginStart="12dp"
            android:indeterminate="true"
            app:layout_constraintBottom_toBottomOf="@id/btnIdentity"
            app:layout_constraintStart_toEndOf="@id/btnIdentity"
            app:layout_constraintTop_toTopOf="@id/btnIdentity" />

        <TextView
            android:id="@+id/tvIdentity"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/title_setup_identity_remark"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/btnIdentity" />

        <TextView
            android:id="@+id/tvIdentityDone"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/title_setup_done"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvIdentity" />

        <Button
            android:id="@+id/btnIdentityManage"
            style="?android:attr/buttonStyleSmall"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:minHeight="0dp"
            android:minWidth="0dp"
            android:text="@string/title_setup_identity_manage"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvIdentityDone" />

        <!-- permissions -->

        <Button
            android:id="@+id/btnPermissions"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:text="@string/title_setup_permissions"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            android:visibility="gone"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/btnIdentityManage" />

        <TextView
            android:id="@+id/tvPermissions"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/title_setup_permissions_remark"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            android:visibility="gone"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/btnPermissions" />

        <TextView
            android:id="@+id/tvPermissionsDone"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/title_setup_done"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            android:visibility="gone"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvPermissions" />
    </android.support.constraint.ConstraintLayout>
</ScrollView>