I can find the ways to receive and handle shared Text/Data on Xamarin.Android how can the same be done on Xamarin.iOS?
When you share something on WhatsApp I want my app to show up here:
Then I need to handle the data. I really cannot find many answers to this, some say it can't be done using xamarin. Others want to rely on WhatsApp's API. The rest use Swift or Java where I need C#.
Any help would be highly appreciated. Thank you for your time.
This is iOS Share Extension and can be done on Xamarin.iOS
There is a detailed document here for all other iOS Extensions since iOS 8 with a short video. A tutorial for Today Extension but the creation of Share Extension is similar.
https://learn.microsoft.com/en-us/xamarin/ios/platform/extensions
You can look at the Xamarin.iOS sample code for Share extension (which meets your issue: https://developer.xamarin.com/samples/monotouch/ios8/Share/
Related
Im trying to create an UWP App that allows the users to scan documents with TWAIN. I tried a few nugets such as Atalasoft DotTwain, NTwain, TwainDotNet and Saraff.Twain. All of them have samples made in WPF, Winforms... except the Saraff.Twain nuget that have a sample made in UWP.
The problem here is that when I run the WPF and Winforms samples all of them works pretty nice, basically is what I need to do but in UWP and when I try to use the code of the samples on my own App it doesn't build because it doesn't recognize a lot of classes even with the Using sentences at the start of my class.
The Saraff.Twain UWP sample doesn't build and i can't find another Twain UWP Sample on google.
Im not putting code because there is no particular problem but if you want it just leave a comment and I'll upload some.
Does anyone have used TWAIN in an UWP APP successfully? I'm very lost with it... Hope any of you have the key to the gate. Thanks.
UWP has its own document scanner API. In addition, it is possible to use Dynamic Web TWAIN in a UWP app. Check this blog: https://www.dynamsoft.com/codepool/uwp-document-scanning-web-twain.html
I would like to know if there is any recognition system for Xamarin Forms that can recognise a point (for example a green filled circle) with the camera, in order to extract info from that point (like coordinates).
I know that EmguCV maybe can do that, but the samples are not working and if you want to use it on Xamarin Forms, you have to pay a commercial license, what does not make sense to me if I can't test it before.
Any info about this would be greatly appreciated.
I see 3 ways for you:
use EmguCV:
I use EmguCV for Xamarin Forms, and it's working pretty well.
But it's pretty complicated to configure it... Try this tutorial: Using Emgu with Xamarin Forms. I think you can test it without buying a licence but only on a simulator...
I also found an Azure service called "Custom Vision". You can train a neural network? to recognize objects on your pictures... Take a look at here (there is a free plan): Custom vision Azure service
Finally, If you have enough skill in image processing you can do it by yourself (there are many tutorial on the web).
==> For me the first solution is the best (Emgu is really powerfull). So if you plan to use it for several projects, I suggest you to buy a licence...
"Custom Vision" Azure service look really convenient but I don't know if it fit your needs... You have to test it, and the free plan is limited too...
Good luck
I am looking to create a videocall app but I am a bit unsure where I should start. Preferably I would like to implement a service like skype or something similiar to avoid creating the entire code myself but maybe that is what i have to do. I have a camera stream already implemented (avfoundation) but i can imagine there is a lot of work left in order to create a fully working videocall code.
What options do you guys think I have? Is it possible to implement skype for xamarin forms? I also saw a component called Twilio that you can use in xamarin forms but it seems like it is not supporting a video call, atleast not the component in xamarin forms.
Any help, tips, links is greatly appreciated!
You could use Azure Media Services for this.
https://azure.microsoft.com/en-us/services/media-services/
I am currently working on a solution where i want to livestream from my app. I succesfully get my camerastream working with avfoundation. The next step in order to complete my task is to send my video frames to a rtmp server but I am not sure on how i can accomplish this in xamarin forms ios.
For swift there is a library called https://github.com/jgh-/VideoCore that solves this but do we have something similiar in xamarin (any library) or documentation on examples that tackles this issue?
Thanks a lot!
Maybe it's a bit late for you, but this can probably help someone who wants to do the same thing (like I did), you can use the Xamarin port of LFLiveKit:
https://github.com/rhedgpeth/Xamarin-LFLiveKit
You'll have to implement a custom renderer to use it with forms, but it's not too hard if you follow the sample project in the repository.
I'm developping a SmartDevice application (Pocket PC 2003 template) in C# for a device with Windows Mobile 6.1. I need to use the camera of this device (photos, video); to do this work i tried using the CameraCaptureDialog class but it does not work for Pocket PC applications.
So, I documented on the internet and found that I probably refer to DirectShow API, but the problem is that I do not know where to start because I can't found a working/correct example.
My questions:
Is this the right way? Are there alternatives?
Where I can find a very good example that shows how to do this work?
You may try directshowbetcf: http://alexmogurenko.com/blog/directshownetcf/ if you really want to go with DirectShow and NetCF.
There's plenty of examples of directshow on the web. There is a site dedicated to converting the API over to C# which makes it a lot easier, maybe this was it http://directshownet.sourceforge.net/about.html. I struggled with DirectShow until I read the book "programming directshow" from microsoft press. About a third of that way through that book it all seemed incredibly easy and I was able to complete what I wanted. In the end it's a lot like referencing any library and using the classes from within that library. The added difficulty is that you need to add wrappers because they are all COM objects but that has been done for you.
This might be useful to you to understand the DirectShow technology. Basically gives a start to DirctShow and explains some of the important points. But its C++ not C#. Hope this help
Basic Video Capture
DirectShow is the video capture API in Windows Mobile 6. There is a Video Capture Filter there and all in all things are designed pretty much the same way they are in Windows.
The problem is that however that this is a native API, and not just in Windows Mobile. To develop in C# you need some bindings and they are missing. On desktop there is DirectShow.NET, which is a missing piece, but it does not seem to fit well for CE. Yet you still need to fill this gap in Windows Mobile.
To work it around you have a few ways, the first would be to go through DirectShow.NET and update it appropriately to start working on your device, strip parts missing in mobile OS etc. This would get you a twin for DS.NET but for mobile operating system.
Another option would be to do some C++ development and implement the minimal sufficient feature set in that domain, exposing the component via COM. Then you will reference this from managed code and things will get connected together. And another obvious option would be to use a third party solution which already does one of the mentioned above.