Develop Reference

Load Embedded Resources as Images in MAUI

I created a simple program with MAUI to load 2 images, specified as Embedded Resources.
This is the MainPage:
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="Surprise.MainPage">
<ScrollView>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="550"/>
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<VerticalStackLayout x:Name="ImageContainer"
Grid.Row="0"
HeightRequest="500"
VerticalOptions="Center"
HorizontalOptions="Center" />
<Grid Grid.Row="1"
HorizontalOptions="Center"
HeightRequest="40">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="30" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Button Text="Image1"
Grid.Column="0"
Clicked="OnImage1ButtonClicked" />
<Button Text="Image2"
Grid.Column="2"
Clicked="OnImage2ButtonClicked" />
</Grid>
</Grid>
</ScrollView>
</ContentPage>
and this is its code behind:
public partial class MainPage : ContentPage
{
private readonly Image _image1;
private readonly Image _image2;
public MainPage()
{
InitializeComponent();
_image1 = new Image()
{
Source = ImageSource.FromResource("Surprise.Resources.Images.image1.jpeg"),
VerticalOptions = LayoutOptions.Center,
HeightRequest = 500
};
_image2 = new Image()
{
Source = ImageSource.FromResource("Surprise.Resources.Images.image2.jpg"),
VerticalOptions = LayoutOptions.Center,
HeightRequest = 500
};
}
private void OnImage1ButtonClicked(object sender, EventArgs e)
{
ImageContainer.Children.Clear();
ImageContainer.Children.Add(_image1);
}
private void OnImage2ButtonClicked(object sender, EventArgs e)
{
ImageContainer.Children.Clear();
ImageContainer.Children.Add(_image2);
}
}
On Windows it works correctly.
On Android sometimes the images are loaded in wrong order or even the same image is loaded when I press each button.
Is it a MAUI bug or I'm missing something?
Thanks in advance.

Well, there are some changes that were made with Maui projects, we now have Maui-specific build actions that you can use to specify to your project/solution what the type of a certain file is.
In your Scenario, you should use the MauiImage build action then just uses the name of the file as shown here: https://learn.microsoft.com/en-us/dotnet/maui/user-interface/controls/image#load-a-local-image should be enough to fix your issue

Xamarin.Android Camera Permissions with ZXing.Net.Mobile only works after app restart

I am using ZXing.Net.Mobile in a Xamarin.Forms project. It works fine on iOS, but on Android, the first time I use the scanner, I get the camera permissions popup, and grant them.
There is no image from the camera immediately after the permissions. If I quit the app and re-launch, the camera works fine from that point forward. How can I get it to work right away? Even if I close my view, dispose and re-initialize it, it still doesn't work until the app restarts.
Here is relevant code:
public partial class CEUScanModalPage : ContentPage, INotifyPropertyChanged {
private bool _isScanning;
public CEUScanModalPage() {
InitializeComponent();
IsScanning = false;
BindingContext = this;
Indicator.Start();
}
public bool IsScanning {
get {
return _isScanning;
}
set {
_isScanning = value;
OnPropertyChanged();
}
}
private async void OnCloseButtonClicked(object sender, EventArgs args) {
await Navigation.PopModalAsync();
}
protected override void OnAppearing() {
base.OnAppearing();
IsScanning = true;
}
protected override void OnDisappearing() {
base.OnDisappearing();
_scanView.OnScanResult -= Handle_OnScanResult;
_scanView.IsAnalyzing = false;
_scanView.IsScanning = false;
ParentGrid.Children.Remove(_scanView);
_scanView = null;
}
public async void Handle_OnScanResult(Result result) {
IsScanning = false;
}
}
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:local="clr-namespace:BehaviorLive" xmlns:grial="clr-namespace:UXDivers.Grial;assembly=UXDivers.Grial" xmlns:ffimageloading="clr-namespace:FFImageLoading.Forms;assembly=FFImageLoading.Forms" xmlns:fftransformations="clr-namespace:FFImageLoading.Transformations;assembly=FFImageLoading.Transformations" xmlns:zxing="clr-namespace:ZXing.Net.Mobile.Forms;assembly=ZXing.Net.Mobile.Forms"
x:Class="BehaviorLive.Views.CEUScanModalPage"
NavigationPage.HasNavigationBar="False"
Style="{ StaticResource MainMenuOrModalBackgroundStyle }">
<ContentPage.Resources>
<ResourceDictionary
Source="/Styles/TabControl/SimpleTabResources.xaml" />
</ContentPage.Resources>
<ContentPage.Content>
<Grid>
<Grid.RowDefinitions>
<RowDefinition
Height="145" />
<RowDefinition
Height="*" />
</Grid.RowDefinitions>
<Grid
RowSpacing="0"
ColumnSpacing="0"
Margin="0,0,0,10"
VerticalOptions="EndAndExpand">
<Grid.RowDefinitions>
<RowDefinition
Height="10" />
<RowDefinition
Height="Auto" />
<RowDefinition
Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition
Width="120" />
<ColumnDefinition
Width="*" />
</Grid.ColumnDefinitions>
<!-- LOGO -->
<Label
Grid.Row="0"
Grid.RowSpan="3"
Margin="20,0"
TextColor="{ DynamicResource InverseTextColor }"
FontSize="74"
FontFamily="{StaticResource FontAwesomeSolid}"
Text="{ x:Static local:FontawesomeSolidFont.Qrcode }"
Style="{ StaticResource FontIcon }"
HorizontalOptions="Start"
VerticalTextAlignment="Center" />
<!-- WELCOME -->
<Label
Grid.Row="1"
Grid.Column="1"
Text="CEU Checkin"
FontSize="22"
TextColor="{ DynamicResource InverseTextColor }"
Style="{ StaticResource LabelBoldStyle }"
VerticalOptions="End"
HorizontalOptions="Start" />
<!-- SUB -->
<Label
Grid.Row="2"
Grid.Column="1"
Text="Scan QR Code to check in/out of your event"
FontSize="16"
TextColor="{ DynamicResource InverseTextColor }"
VerticalOptions="Start"
HorizontalOptions="Start" />
</Grid>
<Grid
Grid.Row="1"
BackgroundColor="{ DynamicResource MainWrapperBackgroundColor }"
grial:Effects.ApplyIOSSafeAreaAsPadding="Bottom" x:Name="ParentGrid">
<!-- TAB -->
<StackLayout x:Name="LoadingIndicator" Grid.Row="0" VerticalOptions="CenterAndExpand">
<local:CustomActivityIndicator
Grid.Row="0"
x:Name="Indicator"
HorizontalOptions="Center"
VerticalOptions="Start" />
<Label
Grid.Row="1"
FontSize="Large"
HorizontalTextAlignment="Center"
Text="{ grial:Translate StringLoading }" />
</StackLayout>
<zxing:ZXingScannerView Grid.Row="0" Grid.RowSpan="2" x:Name="_scanView" OnScanResult="Handle_OnScanResult" IsScanning="{Binding IsScanning}"
WidthRequest="200" HeightRequest="200" />
</Grid>
<!-- CLOSE ICON -->
<Label
Style="{StaticResource IconCloseLabelStyle}">
<Label.GestureRecognizers>
<TapGestureRecognizer
Tapped="OnCloseButtonClicked" />
</Label.GestureRecognizers>
</Label>
</Grid>
</ContentPage.Content>
</ContentPage>
MainActivity.cs
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Permission[] grantResults) {
Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);
base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
}

The best way to fix the issue would be to handle the permission part yourself
A generic permission helper:
using System.Threading.Tasks;
using Xamarin.Essentials;
using static Xamarin.Essentials.Permissions;
public static async Task<PermissionStatus> CheckAndRequestPermissionAsync<TPermission>()
where TPermission : BasePermission, new()
{
TPermission permission = new TPermission();
var status = await permission.CheckStatusAsync();
if (status != PermissionStatus.Granted)
{
status = await permission.RequestAsync();
}
return status;
}
Then use it like
var status = await PermissionsHelper.CheckAndRequestPermissionAsync<Permissions.Camera>();
if(status != PermissionStatus.Granted)
{
return;
}

Xamarin CommunityToolkit - Video record rotated

I've been trying to record a video from Xamarin CommunityToolkit.
When the app it's in portraid mode video it's saved like it's in landscape mode and it's rotated at 90.
I have seen that many people using images can rotate them 90 degrees by controlling the orientation of the phone. But how can I do this with videos?
This is Camera 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="MYAPP.Views.CameraPage"
xmlns:vm="clr-MYAPP.ViewModels"
xmlns:xct="http://xamarin.com/schemas/2020/toolkit"
xmlns:local="clr-namespace:MYAPP.Views;assembly=CustomView"
Title="{Binding Title}">
<AbsoluteLayout>
<StackLayout Orientation="Vertical" Spacing="0" AbsoluteLayout.LayoutFlags="All"
AbsoluteLayout.LayoutBounds="0,0,1,1">
<local:CameraPreview Camera="Rear"
HorizontalOptions="FillAndExpand"
VerticalOptions="FillAndExpand" />
<xct:CameraView
Grid.Column="0"
x:Name="cameraView"
CaptureMode="Photo"
FlashMode="Off"
MediaCaptured="CameraView_MediaCaptured"
OnAvailable="CameraView_OnAvailable"
HorizontalOptions="FillAndExpand"
VerticalOptions="FillAndExpand" />
</StackLayout>
<Button
HorizontalOptions="CenterAndExpand"
VerticalOptions="End"
WidthRequest="500"
HeightRequest="70"
CornerRadius="15"
AbsoluteLayout.LayoutFlags="PositionProportional"
AbsoluteLayout.LayoutBounds="0.5,1,AutoSize,AutoSize"
Margin="0, 0, 0, 30"
x:Name="doCameraThings"
Clicked="DoCameraThings_Clicked"
IsEnabled="False"
Text="Registra" />
</AbsoluteLayout>
</ContentPage>
This is CameraContentPage:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using Xamarin.Essentials;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using Xamarin.Forms.PlatformConfiguration;
using MYAPP.Services;
using Xamarin.CommunityToolkit.UI.Views;
using Xamarin.CommunityToolkit.Core;
namespace MYAPP.Views
{
public partial class CameraPage : ContentPage
{
public CameraPage()
{
InitializeComponent();
Title = "Camera";
cameraView.CaptureMode = CameraCaptureMode.Video;
cameraView.VideoStabilization = true;
}
void DoCameraThings_Clicked(object sender, EventArgs e)
{
cameraView.Shutter();
doCameraThings.Text = cameraView.CaptureMode == CameraCaptureMode.Video
? "Stop Recording"
: "Snap Picture";
}
void CameraView_OnAvailable(object sender, bool e)
{
doCameraThings.IsEnabled = e;
}
void CameraView_MediaCaptured(object sender, MediaCapturedEventArgs e)
{
switch (cameraView.CaptureMode)
{
default:
case CameraCaptureMode.Default:
case CameraCaptureMode.Photo:
break;
case CameraCaptureMode.Video:
FileMediaSource file = e.Video.File;
DependencyService.Get<IStorage>().exportFileMediaSource(file, "asd.mp4");
doCameraThings.Text = "Registra";
DependencyService.Get<IToast>().ShortAlert("Video salvato");
break;
}
}
}
}
I'm using Xamarin.CommunityToolkit ver 1.2.0. How can rotate video when saved ?
MediaCapturedEventArgs Rotarion property it's readonly and return 0.
API Level 29

Missing images on carousel view from urls

I'm making an app with Xamarin Form that should work both on iOS and Android, I have a carousel view with an image inside, so I have tried making a carousel with a cell using this nugget: URL
while working fine on iOS on android the cell keeps crashing so I've changed with a cell containing only one image with a binding on the URL
now everything working but the are sono images sporadically missing inside the carousel.
Am I missing something? is there a nugget package for xamarin form for caching displaying correctly all the images?
thanks
making FFImage.Loading working on Android with no success
android cell
<?xml version="1.0" encoding="UTF-8"?>
<ContentView xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:ffimage="clr-namespace:FFImageLoading.Forms;assembly=FFImageLoading.Forms"
xmlns:local="clr-namespace:CTSApp.Utility"
x:Class="CTSApp.Celle.cella_volantino_android">
<ContentView.Content>
<ScrollView>
<StackLayout HorizontalOptions="FillAndExpand" VerticalOptions="CenterAndExpand">
<local:PinchToZoomContainer>
<local:PinchToZoomContainer.Content>
<Image Source="{Binding url}" HorizontalOptions = "FillAndExpand"
VerticalOptions = "FillAndExpand" />
</local:PinchToZoomContainer.Content>
</local:PinchToZoomContainer>
</StackLayout>
</ScrollView>
</ContentView.Content>
</ContentView>
iOS cell
<?xml version="1.0" encoding="UTF-8"?>
<ContentView xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:ffimage="clr-namespace:FFImageLoading.Forms;assembly=FFImageLoading.Forms"
xmlns:fftransf="clr-namespace:FFImageLoading.Transformations;assembly=FFImageLoading.Transformations"
xmlns:local="clr-namespace:CTSApp.Utility" x:Class="CTSApp.Celle.cella_volantino">
<ContentView.Content>
<ScrollView>
<StackLayout HorizontalOptions="FillAndExpand" VerticalOptions="CenterAndExpand">
<local:PinchToZoomContainer>
<local:PinchToZoomContainer.Content>
<ffimage:CachedImage Grid.RowSpan="2" Aspect="AspectFill"
Source="{Binding url}"
DownsampleToViewSize="false"
LoadingPlaceholder="placeholder.png"
ErrorPlaceholder="placeholder.png"
VerticalOptions="FillAndExpand"
HorizontalOptions="FillAndExpand">
<ffimage:CachedImage.CacheDuration>
<x:TimeSpan>0,0,15,0</x:TimeSpan>
</ffimage:CachedImage.CacheDuration>
</ffimage:CachedImage>
</local:PinchToZoomContainer.Content>
</local:PinchToZoomContainer>
</StackLayout>
</ScrollView>
</ContentView.Content>
</ContentView>
thanks for help.
EDIT
Here is my main activity:
using Android.Content.PM;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
using Plugin.FirebasePushNotification;
using Firebase;
using Plugin.CurrentActivity;
using Plugin.Permissions;
using Xamarin;
using Xamarin.Forms;
using Android.Content.Res;
using SegmentedControl.FormsPlugin.Android;
using ZXing.Mobile;
namespace CTSApp.Droid
{
[Activity(Label = "CTSApp", Icon = "#drawable/ic_launcher", Theme = "#style/MyTheme.Splash", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
protected override void OnCreate(Bundle bundle)
{
TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
base.OnCreate(bundle);
global::Xamarin.Forms.Forms.Init(this, bundle);
MobileBarcodeScanner.Initialize(Application);
Rg.Plugins.Popup.Popup.Init(this, bundle);
ZXing.Net.Mobile.Forms.Android.Platform.Init();
FFImageLoading.Forms.Droid.CachedImageRenderer.Init(enableFastRenderer: true);
Plugin.CurrentActivity.CrossCurrentActivity.Current.Activity = this;
CrossCurrentActivity.Current.Init(this, bundle);
SegmentedControlRenderer.Init();
FirebasePushNotificationManager.ProcessIntent(Intent);
LoadApplication(new App());
}
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Permission[] grantResults)
{
Plugin.Permissions.PermissionsImplementation.Current.OnRequestPermissionsResult(requestCode, permissions, grantResults);
PermissionsImplementation.Current.OnRequestPermissionsResult(requestCode, permissions, grantResults);
global::ZXing.Net.Mobile.Forms.Android.PermissionsHandler.OnRequestPermissionsResult (requestCode, permissions, grantResults);
}
}
}
FFImageLoader version 2.4.3.840
Xamarin form version 2.50
EDIT 2
Maybe I've found the problem, here is the new definitive cell I'm using
<?xml version="1.0" encoding="UTF-8"?>
<ContentView xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:ffimage="clr-namespace:FFImageLoading.Forms;assembly=FFImageLoading.Forms"
xmlns:local="clr-namespace:CTSApp.Utility"
x:Class="CTSApp.Celle.cella_volantino_android">
<ContentView.Content>
<ScrollView>
<StackLayout HorizontalOptions="FillAndExpand" VerticalOptions="CenterAndExpand">
<local:PinchToZoomContainer>
<local:PinchToZoomContainer.Content>
<Image Source="{Binding url}" HorizontalOptions = "FillAndExpand"
VerticalOptions = "FillAndExpand" >
<Image.Source>
<UriImageSource Uri="{Binding url}"
CacheValidity="14"
CachingEnabled="true"/>
</Image.Source>
</Image>
</local:PinchToZoomContainer.Content>
</local:PinchToZoomContainer>
</StackLayout>
</ScrollView>
</ContentView.Content>
</ContentView>
Now I'm using the standard image with caching , now on iOS everything works fine , on android I'm getting error from some pages
ImageLoaderSourceHandler: Could not retrieve image or image data was invalid: Uri:
that obviously does not load, I've followed the tutorial here
https://doumer.me/resolve-image-loading-error-in-xamarin-forms/
Still no luck, but if I turn the phone horizontally the image load correctly, I really have no clue
video here:
https://streamable.com/rk1rv

Here is a sample with CarouselView to show image.All can work in IOS and Android.If want to use ffimage:CachedImage ,replacing Image with it.
Here is Xaml code:
<StackLayout>
<CarouselView x:Name="carousel" ItemsSource="{Binding uris}">
<CarouselView.ItemTemplate>
<DataTemplate>
<Image
x:Name="PlantPicture"
Source="{Binding uri}"
HorizontalOptions="Center"
VerticalOptions="Center"
WidthRequest="150"
HeightRequest="150">
</Image>
</DataTemplate>
</CarouselView.ItemTemplate>
</CarouselView>
</StackLayout>
Model code :
public class FloraData
{
public class StringData
{
public string uri { get; set; }
}
public List<StringData> uris { get; set; }
public FloraData()
{
uris = new List<StringData>() { new StringData() { uri = "https://static.inaturalist.org/photos/504134/medium.jpg?1379628103" },
new StringData() { uri = "https://static.inaturalist.org/photos/8784478/small.jpg?1499006293" },
new StringData() { uri = "https://api.idigbio.org/v2/media/23cbb9eb2750e80848ac95b5d2919323?size=thumbnail" },
new StringData() { uri = "https://api.idigbio.org/v2/media/c085496285be91ace0768eb517cc704b?size=thumbnail" },
new StringData() { uri = "http://swbiodiversity.org/imglib/arizona/IND/IND-0049/IND-0049216_1491615930_tn.jpg" }};
}
}
Finally , ContentPage.cs BindingContext :
FloraData floraData = new FloraData();
carousel.BindingContext = floraData;

Xamarin custom renderer System.ArgumentException when runs

I've created a rendered picker's to center center in the middle of the control but at the moment of entering the page, it shows the following error: System.ArgumentException.
I attach the code to see if you can help me.
In project new class...
using Xamarin.Forms;
namespace MaterialFUR
{
public class PickerCentrat : Picker
{
}
}
In Android ...
using MaterialFUR;
using MaterialFUR.Droid;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;
[assembly: ExportRenderer(typeof(PickerCentrat), typeof(RendererPicker))]
namespace MaterialFUR.Droid
{
public class RendererPicker : EntryRenderer
{
public RendererPicker(Context context) : base(context)
{
}
protected override void OnElementChanged(ElementChangedEventArgs<Entry> e)
{
base.OnElementChanged(e);
if (Control != null)
{
Control.Gravity = GravityFlags.CenterHorizontal;
}
}
}
}
In XAML page...
<?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="MaterialFUR.AgafarMaterialPage"
xmlns:local="clr-namespace:MaterialFUR"
Title="Agafar Material">
<ContentPage.Content>
<StackLayout HorizontalOptions="Center" VerticalOptions="Center" Spacing="25">
<Button x:Name="btnScan" Clicked="btnScan_Clicked" BackgroundColor="Gray" TextColor="White" Text="Llegir codi de barres" FontSize="30" FontAttributes="Bold" BorderRadius="30"/>
<Entry x:Name="entCodi" TextColor="Black" FontSize="30" FontAttributes="Bold" Keyboard="Default" Placeholder="Codi" HorizontalTextAlignment="Center"/>
<Entry x:Name="entQtat" TextColor="Black" FontSize="30" FontAttributes="Bold" Keyboard="Numeric" Placeholder="Quantitat" HorizontalTextAlignment="Center"/>
<local:PickerCentrat x:Name="pckUbicacio" Title="Ubicació" TextColor="Black" FontSize="30" FontAttributes="Bold">
<Picker.Items>
<x:String>SATMOBIL-1</x:String>
<x:String>SATMOBIL-2</x:String>
<x:String>SATMOBIL-3</x:String>
<x:String>SATMOBIL-4</x:String>
<x:String>SATMOBIL-5</x:String>
<x:String>SATMOBIL-6</x:String>
<x:String>SATMOBIL-7</x:String>
<x:String>SATMOBIL-8</x:String>
<x:String>SATMOBIL-9</x:String>
<x:String>TALLER</x:String>
</Picker.Items>
</local:PickerCentrat>
<StackLayout Orientation="Horizontal" Margin="0,100">
<Button x:Name="btnConfirmar" Clicked="BtnConfirmar_Clicked" BackgroundColor="SteelBlue" TextColor="White" Text="Confirmar" FontSize="30" FontAttributes="Bold" BorderRadius="30"/>
<Button x:Name="btnCancelar" Clicked="BtnCancelar_Clicked" BackgroundColor="Gray" TextColor="White" Text="Cancelar" FontSize="30" FontAttributes="Bold" BorderRadius="30"/>
</StackLayout>
</StackLayout>
</ContentPage.Content>
Error displayed.
I appreciate your help, thanks!

Your class needs to Inherit from PickerRenderer
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;
[assembly: ExportRenderer(typeof(PickerCentrat), typeof(RendererPicker))]
namespace MaterialFUR.Droid
{
public class RendererPicker : PickerRenderer
{
public RendererPicker(Context context) : base(context)
{
}
protected override void OnElementChanged(ElementChangedEventArgs<Picker> e)
{
base.OnElementChanged(e);
if (Control != null)
{
Control.Gravity = GravityFlags.CenterHorizontal;
}
}
}
}
When in doubt about which class you need to Inherit from for your CustomRenderer, you can always check on the Xamarin.Forms source code here (for Android).
Hope this helps.