borepin/Borepin/Borepin/Page/AddServerProcess/SelectServerPage.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"
             x:Class="Borepin.Page.AddServerProcess.SelectServerPage"
             xmlns:converters="clr-namespace:Borepin.Converter"
             Title="Connect to Server">
    <ContentPage.Resources>
        <ResourceDictionary>
            <converters:InvertBoolConverter x:Key="InvertBoolConverter"/>
        </ResourceDictionary>
    </ContentPage.Resources>
    <ContentPage.Content>
        <StackLayout Padding="20">
            <StackLayout IsVisible="{Binding IsBusy}">
                <ActivityIndicator IsRunning="{Binding IsBusy}"></ActivityIndicator>
            </StackLayout>
            <StackLayout IsVisible="{Binding IsBusy, Converter={StaticResource InvertBoolConverter}}">
                <Label Text="Host" Style="{StaticResource Style_Label_Property_Title}"></Label>
                <Entry Text="{Binding Server}"/>
                <Button Text="Connect to Server" Command="{Binding ConnectToServerCommand}" Style="{StaticResource Style_Button_Primary}"/>
                <Button Text="Scan QR-Code" Command="{Binding ScanCodeCommand}" Style="{StaticResource Style_Button_Primary}">
                    <Button.IsVisible>
                        <OnPlatform x:TypeArguments="x:Boolean"
                    iOS="false"
                    Android="true"/>
                    </Button.IsVisible>
                </Button>
            </StackLayout>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>