I'm not sure if this is a Syncfusion or XF problem, but the problem started occurring after the XF 3.5 update. I suspect it's related to the SfListview control, but I can't be sure. I have created a very stripped down version of my app and I'm able to replicate the problem.
My environment:
Visual Studio 15.9.7
Xamarin Forms 3.5.0.169047
My Xamarin app uses .net standard as it's code sharing strategy
Issue happens on Android and iOS builds in release mode
Issue can be reproduced with a small representative app on Android (haven't tried yet on iOS)
Repo attached
Here is the XAML for the MainPage of my basic app:
<?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:sflv="clr-namespace:Syncfusion.ListView.XForms;assembly=Syncfusion.SfListView.XForms"
xmlns:sfPick="clr-namespace:Syncfusion.SfPicker.XForms;assembly=Syncfusion.SfPicker.XForms"
xmlns:local="clr-namespace:SFXF35Test"
x:Class="SFXF35Test.MainPage">
<StackLayout>
<Button x:Name="btnSelectMedia" Text="Select Media" Clicked="BtnSelectMedia_Clicked"/>
<Label x:Name="lblSelectedMedia" Text="None Selected" HorizontalOptions="Center" FontSize="Medium" FontAttributes="Bold" TextColor="Blue"/>
<sfPick:SfPicker x:Name="pickMedia" PickerMode="Dialog" HorizontalOptions="CenterAndExpand" HeaderText="Pick Media"
OkButtonClicked="PickMedia_OkButtonClicked" CancelButtonClicked="PickMedia_CancelButtonClicked" ShowFooter="True" >
</sfPick:SfPicker>
<sflv:SfListView x:Name="lvMediaItems"
ItemTapped="LvMediaItems_ItemTapped"
>
<sflv:SfListView.ItemSize>
<OnIdiom Phone="40" Tablet="75"/>
</sflv:SfListView.ItemSize>
</sflv:SfListView>
</StackLayout>
</ContentPage>
And the code behind:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
namespace SFXF35Test
{
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
}
private void BtnSelectMedia_Clicked(object sender, EventArgs e)
{
}
private void PickMedia_OkButtonClicked(object sender, Syncfusion.SfPicker.XForms.SelectionChangedEventArgs e)
{
}
private void PickMedia_CancelButtonClicked(object sender, Syncfusion.SfPicker.XForms.SelectionChangedEventArgs e)
{
}
private void LvMediaItems_ItemTapped(object sender, Syncfusion.ListView.XForms.ItemTappedEventArgs e)
{
}
}
}
And the redacted App.xaml.cs file
using System;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
[assembly: XamlCompilation(XamlCompilationOptions.Compile)]
namespace SFXF35Test
{
public partial class App : Application
{
public App()
{
InitializeComponent();
Syncfusion.Licensing.SyncfusionLicenseProvider.RegisterLicense("REDACTEDLICENSEKEY");
MainPage = new MainPage();
}
protected override void OnStart()
{
// Handle when your app starts
}
protected override void OnSleep()
{
// Handle when your app sleeps
}
protected override void OnResume()
{
// Handle when your app resumes
}
}
}
