I'm working on a mobile App using Xamarin Forms, I'm facing an issue that is working as expected on Android but not on IOS, I have a share button that will call the built-in share of the working platform passing the title and uri, however on IOS this functionality seems not working as expected, I don’t know if it’s slow or had other problem, so that you have to hit the share icon many time to get the share popup displayed (again this is working very good on Android).
Please Advise, The following is the code:
<StackLayout Grid.Column="2" Grid.ColumnSpan="2" Spacing="0" Margin="0,5,13,0">
<StackLayout.GestureRecognizers>
<TapGestureRecognizer Tapped="ImageButton_Clicked"/>
</StackLayout.GestureRecognizers>
<Image Source="export" HeightRequest="27" WidthRequest="20" VerticalOptions="Center" HorizontalOptions="End" Margin="0,0,0,0"/>
</StackLayout>
private async void ImageButton_Clicked(object sender, System.EventArgs e)
{
await Share.RequestAsync(new ShareTextRequest
{
Uri = "http://myurl",
Title = "My Title"
});
}
In additional to my previous question I will share the whole xaml code hop this may give a clear view:
Xaml Code:
<?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:prism="clr-namespace:Prism.Mvvm;assembly=Prism.Forms"
xmlns:Helpers="clr-namespace:StandardsView.Helper"
xmlns:telerikDataControls="clr-namespace:Telerik.XamarinForms.DataControls;assembly=Telerik.XamarinForms.DataControls"
xmlns:telerikListView="clr-namespace:Telerik.XamarinForms.DataControls.ListView;assembly=Telerik.XamarinForms.DataControls"
xmlns:local="clr-namespace:StandardsView.Views"
xmlns:telerikPrimitives="clr-namespace:Telerik.XamarinForms.Primitives;assembly=Telerik.XamarinForms.Primitives"
prism:ViewModelLocator.AutowireViewModel="True"
x:Class="StandardsView.Views.PreviewStandard"
x:Name="parent"
xmlns:ios="clr-namespace:Xamarin.Forms.PlatformConfiguration.iOSSpecific;assembly=Xamarin.Forms.Core"
ios:Page.UseSafeArea="False"
NavigationPage.HasNavigationBar="False"
BackgroundImageSource="{Binding AppModel.BackgroundImage}"
IsEnabled="{Binding AppModel.IsBusy, Converter={Helpers:InverseBoolConverter}}">
<Grid RowSpacing="0" >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<telerikDataControls:RadListView x:Name="listView" Margin="10,0,0,0" SelectionMode="None" ItemsSource="{Binding AppModel.Benchmarks}" HeaderTemplate="{StaticResource ListHeaderTemplate}" FooterTemplate="{StaticResource ListFooterTemplate}">
<telerikDataControls:RadListView.ItemStyle>
<telerikListView:ListViewItemStyle BackgroundColor="Transparent" BorderLocation="None" BorderWidth="0" BorderColor="Transparent" />
</telerikDataControls:RadListView.ItemStyle>
<telerikDataControls:RadListView.SelectedItemStyle>
<telerikListView:ListViewItemStyle BackgroundColor="Transparent" />
</telerikDataControls:RadListView.SelectedItemStyle>
<telerikDataControls:RadListView.ItemTemplate>
<DataTemplate>
<telerikListView:ListViewTemplateCell>
<telerikListView:ListViewTemplateCell.View>
<StackLayout Padding="0" Spacing="0" BackgroundColor="Transparent" Margin="0,0,0,10">
<telerikPrimitives:RadBorder CornerRadius="15, 15, 0, 0" Padding="0" Margin="0,0,12,0">
<telerikPrimitives:RadBorder.Triggers>
<DataTrigger TargetType="telerikPrimitives:RadBorder" Binding="{Binding ResourceCount}" Value="0">
<Setter Property="CornerRadius" Value="15"/>
</DataTrigger>
</telerikPrimitives:RadBorder.Triggers>
<Grid BackgroundColor="White">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="19"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="10"/>
</Grid.ColumnDefinitions>
<StackLayout Grid.Column="2" Grid.ColumnSpan="2" Spacing="0" Margin="0,5,13,0">
<StackLayout.GestureRecognizers>
<TapGestureRecognizer Command="{Binding ShareCommand}" />
</StackLayout.GestureRecognizers>
<Image Source="export" HeightRequest="27" WidthRequest="20" VerticalOptions="Center" HorizontalOptions="End" />
</StackLayout>
<StackLayout Grid.Column="1" Grid.ColumnSpan="2" Padding="0,0,0,10">
<Grid Margin="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="130"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<BoxView BackgroundColor="{StaticResource CPALMS_BlueGreen}" CornerRadius="0,0,5,5" HeightRequest="22" WidthRequest="130"/>
<Label Text="{Binding Code}" Style="{StaticResource BrowseItemTitle}" />
</Grid>
<Label MinimumHeightRequest="50" Style="{StaticResource BrowseItemDescription16}" Text="{Binding Description}" Margin="0,7,0,7" />
<StackLayout>
<StackLayout.Triggers>
<DataTrigger TargetType="StackLayout" Binding="{Binding Remarks}" Value="">
<Setter Property="IsVisible" Value="False"/>
</DataTrigger>
</StackLayout.Triggers>
<BoxView HeightRequest="1" BackgroundColor="{StaticResource CPALMS_BlueGreen}" ></BoxView>
<Label Style="{StaticResource StdClarificationsTitleLabel}" Text="Clarifications" />
<Label Style="{StaticResource StdClarificationsLabel}" Text="{Binding Remarks}" />
</StackLayout>
<BoxView HeightRequest="1" BackgroundColor="{StaticResource CPALMS_BlueGreen}" ></BoxView>
<Label Style="{StaticResource StdInfoLabel}">
<Label.Triggers>
<DataTrigger TargetType="Label" Binding="{Binding ContentComplexityDescription}" Value="">
<Setter Property="IsVisible" Value="False"/>
</DataTrigger>
</Label.Triggers>
<Label.FormattedText>
<FormattedString>
<Span Text="Content Complexity: " />
<Span Text="{Binding ContentComplexityDescription}"/>
</FormattedString>
</Label.FormattedText>
</Label>
<Label Style="{StaticResource StdInfoLabel}">
<Label.Triggers>
<DataTrigger TargetType="Label" Binding="{Binding DateStandard}" Value="">
<Setter Property="IsVisible" Value="False"/>
</DataTrigger>
</Label.Triggers>
<Label.FormattedText>
<FormattedString>
<Span Text="Date Adopted/Revised: " />
<Span Text="{Binding DateStandard}"/>
</FormattedString>
</Label.FormattedText>
</Label>
</StackLayout>
</Grid>
</telerikPrimitives:RadBorder>
<telerikPrimitives:RadBorder CornerRadius="0, 0, 15, 15" Padding="0" Margin="0,-2,12,0">
<telerikPrimitives:RadBorder.Triggers>
<DataTrigger TargetType="telerikPrimitives:RadBorder" Binding="{Binding ResourceCount}" Value="0">
<Setter Property="IsVisible" Value="false"/>
</DataTrigger>
</telerikPrimitives:RadBorder.Triggers>
<Grid BackgroundColor="#F29A33" Padding="0,5,0,5">
<Grid.GestureRecognizers>
<TapGestureRecognizer Tapped="PreviewStd" />
</Grid.GestureRecognizers>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="19"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="40"/>
<ColumnDefinition Width="7"/>
</Grid.ColumnDefinitions>
<StackLayout Grid.Column="1" Padding="0,0,5,10">
<StackLayout.GestureRecognizers>
<TapGestureRecognizer Tapped="PreviewStd"/>
</StackLayout.GestureRecognizers>
<Label Style="{StaticResource previewRelatedResourceLabel}">
<Label.GestureRecognizers>
<TapGestureRecognizer Tapped="PreviewStd"/>
</Label.GestureRecognizers>
<Label.FormattedText>
<FormattedString>
<Span Text="{Binding ResourceCount}" FontSize="{StaticResource LargeHeaderSize}" />
<Span Text="{Binding RelatedResourcesLabel}" />
</FormattedString>
</Label.FormattedText>
</Label>
</StackLayout>
<StackLayout Grid.Column="2" Spacing="0" Padding="0,5,0,0">
<StackLayout.GestureRecognizers>
<TapGestureRecognizer Tapped="PreviewStd"/>
</StackLayout.GestureRecognizers>
<Image Source="rightarrow" HeightRequest="31" WidthRequest="31" VerticalOptions="Center" HorizontalOptions="End" Margin="0,0,0,0"/>
</StackLayout>
</Grid>
</telerikPrimitives:RadBorder>
</StackLayout>
</telerikListView:ListViewTemplateCell.View>
</telerikListView:ListViewTemplateCell>
</DataTemplate>
</telerikDataControls:RadListView.ItemTemplate>
<telerikDataControls:RadListView.LayoutDefinition>
<telerikListView:ListViewLinearLayout VerticalItemSpacing="4"/>
</telerikDataControls:RadListView.LayoutDefinition>
</telerikDataControls:RadListView>
<local:NavigationBar Grid.Row="1" prism:ViewModelLocator.AutowirePartialView="{x:Reference parent}" VerticalOptions="End"/>
<local:LoadingPanel Grid.RowSpan="2" prism:ViewModelLocator.AutowirePartialView="{x:Reference parent}" IsVisible="{Binding AppModel.IsBusy}"/>
</Grid>
</ContentPage>
Model Class:
using Prism.Commands;
namespace StandardsView.Models.Entities
{
public class StandardViewModel
{
public virtual int ID { get; set; }
public virtual string Description { get; set; }
public virtual string Code { get; set; }
public virtual string DateStandard { get; set; }
public virtual string Status { get; set; }
public virtual string SubjectAreaName { get; set; }
public virtual string GradeLevelCode { get; set; }
public virtual string DomainAlias { get; set; }
public virtual string DomainDescription { get; set; }
public virtual string IdeaAlias { get; set; }
public virtual string IdeaTitle { get; set; }
public virtual int ResourceCount { get; set; }
public virtual string Remarks { get; set; }
public virtual string RelatedResourcesLabel { get; set; }
public virtual string ContentComplexityDescription { get; set; }
public DelegateCommand ShareCommand { get; set; }
}
}
ViewModel:
using Prism.Commands;
using Prism.Navigation;
using System;
using Xamarin.Forms;
using Xamarin.Essentials;
namespace StandardsView.ViewModels
{
public class PreviewStandardViewModel : ViewModelBase
{
public DelegateCommand PreviewCommand { get; }
public PreviewStandardViewModel(INavigationService navigationService)
: base(navigationService)
{
App.GlobalAppModel.Benchmarks[0].ShareCommand = new DelegateCommand(() => ShareBenchmark());
AppModel = App.GlobalAppModel;
ShowBackButton = true;
Instructions = "Benchmark details";
PreviewCommand = new DelegateCommand(() => PreviewBenchmark());
}
private void PreviewBenchmark()
{
Launcher.OpenAsync(new Uri(string.Format(Constants.previewStandardUrl, App.GlobalAppModel.Benchmarks[0].ID)));
}
private void ShareBenchmark()
{
Device.BeginInvokeOnMainThread(async () =>
{
string strUri = string.Format(Constants.previewStandardUrl, App.GlobalAppModel.Benchmarks[0].ID);
string strTitle = App.GlobalAppModel.Benchmarks[0].Code;
string strText = App.GlobalAppModel.Benchmarks[0].Code + " - " + App.GlobalAppModel.Benchmarks[0].Description;
await Share.RequestAsync(new ShareTextRequest
{
Uri = strUri,
Title = strTitle,
Text = strText
});
});
}
}
}
Also there is an important info that I have to mention, in the code above you will see in the Model class a DelegateCommand declared inside it and on the ViewModel class you will see that this delegate is assigned to the method, well this is the last of my tries and before that try I was using:
<StackLayout Grid.Column="2" Grid.ColumnSpan="2" Spacing="0" Margin="0,5,13,0">
<StackLayout.GestureRecognizers>
<TapGestureRecognizer Tapped="ImageButton_Clicked"/>
</StackLayout.GestureRecognizers>
<Image Source="export" HeightRequest="27" WidthRequest="20" VerticalOptions="Center" HorizontalOptions="End" Margin="0,0,0,0"/>
</StackLayout>
private void ImageButton_Clicked(object sender, System.EventArgs e)
{
Device.BeginInvokeOnMainThread(async () =>
{
string strUri = string.Format(Constants.previewStandardUrl, App.GlobalAppModel.Benchmarks[0].ID);
string strTitle = App.GlobalAppModel.Benchmarks[0].Code;
string strText = App.GlobalAppModel.Benchmarks[0].Code + " - " + App.GlobalAppModel.Benchmarks[0].Description;
await Share.RequestAsync(new ShareTextRequest
{
Uri = strUri,
Title = strTitle,
Text = strText
});
});
}
So all of those cases lead to the same behavior, I shared now all my code hopefully this will help to understand my problem better.
