Using the ReturnButton

UltimatEntryPage.xaml

<?xml version="1.0" encoding="utf-8"?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
             xmlns:ios="clr-namespace:Xamarin.Forms.PlatformConfiguration.iOSSpecific;assembly=Xamarin.Forms.Core"
             xmlns:local="clr-namespace:PhantomLib" 
             xmlns:extensions="clr-namespace:PhantomLib.Extensions;assembly=PhantomLib"
             xmlns:controls="clr-namespace:PhantomLib.CustomControls;assembly=PhantomLib"
             xmlns:effects="clr-namespace:PhantomLib.Effects;assembly=PhantomLib"
             xmlns:behaviors="clr-namespace:PhantomLib.Behaviors;assembly=PhantomLib"
             xmlns:localvms="clr-namespace:PhantomLibSamples.ViewModels;assembly=PhantomLibSamples"
             x:Class="PhantomLibSamples.UltimateEntry.UltimateEntryPage"
             BackgroundColor="{DynamicResource PrimaryColor}"
             Title="Ultimate Entry">
    <ContentPage.Resources>
        <ResourceDictionary>
            <Style x:Key="MaterialEntry" TargetType="controls:UltimateEntry">
                <Setter Property="ThicknessPadding" Value="10,0,2,0" />
                <Setter Property="Grid.Row" Value="1" />
                <Setter Property="TextColor" Value="{DynamicResource PrimaryFontColor}" />
                <Setter Property="ImageTintColor" Value="{DynamicResource AccentColor}" />
                <Setter Property="UnderlineColor" Value="{DynamicResource AccentColor}" />
                <Setter Property="FocusedBackgroundColor" Value="{DynamicResource PrimaryColor}" />
                <Setter Property="BackgroundColor" Value="{DynamicResource PrimaryColor}" />
                <Setter Property="ReturnButton" Value="Next" />
                <Setter Property="PlaceholderColor" Value="{DynamicResource SecondaryFontColor}" />
                <Setter Property="ErrorImageSource" Value="icon_error" />
                <Setter Property="ErrorImageTintColor" Value="{DynamicResource ErrorColor}" />
            </Style>
        </ResourceDictionary>
    </ContentPage.Resources>
    <ContentPage.Content>
        <ScrollView Padding="{DynamicResource Thickness_SafeAreaInsets_LRB}">
            <StackLayout Padding="20">
                <Frame Padding="0" BackgroundColor="Black" CornerRadius="5">
                    <StackLayout Padding="20">
                        <controls:UltimateEntry
                                            Placeholder="Address"
                                            NextView="{x:Reference CityEntry}"
                                            Style="{StaticResource MaterialEntry}"
                                            ReturnButton="Next" />
                        
                        <controls:UltimateEntry x:Name="CityEntry"
                                            Style="{StaticResource MaterialEntry}"
                                            Placeholder="City"
                                            ReturnButton="Done" />
                    </StackLayout>
                </Frame>
            </StackLayout>
        </ScrollView>
    </ContentPage.Content>
</ContentPage>