Windows 8.1 and windows 10 app issues - windows-store-apps

I have a few questions which i need to be clear on before i do windows 10 development.
1.Will 8.1 app work in windows 10 os(both phone and pc)
2.Is it possible to port 8.1 app (store app) to 10 app through command line. If yes,please explain how.

Yes windows 8.1 app will work just fine on windows 10.
Porting is possible from windows 8.1 to windows 10 as there are API changes so you code can brake. for details how you can port windows 8.1 to windows 10 watch this video
Hope this helps

yes it will work fine. the repository API,s of the Windows 10 might be different but a few changes to them can work very fine.

Related

Deploying Windows Phone 8.1 app to Windows 10 Mobile

I've been developing a Windows Phone 8.1 app using C#/XAML. My configuration is up-to-date Windows 8.1 PC + Visual Studio 2013.
I can test my app on WP 8.1 emulator that comes with VS2013, and also no problem deploying it on physical Windows 8.1 device.
However the app also runs on Windows 10 Mobile because the platform currently allows it that way. Which is good except, my app doesn't work as intended since the device got Windows 10 Mobile Anniversary Update.
I don't know if the problem is in Windows or in my app but that's not important here.
I need to create a hotfix for the issue. And here comes the question. Is there a way to deploy WP 8.1 app to Windows 10 Mobile without submitting it to the store first, without upgrading to Windows 10, and preferably without upgrading to VS2015?
UPDATE The reason I want to deploy WP 8.1 app to Windows 10 Mobile is to test if my patch fixes the issue manifests with Windows 10 Mobile. At the moment I don't understand where is the problem and keep submitting the fix attempts to the store is not ideal.
Thanks.
Is there a way to deploy WP 8.1 app to Windows 10 Mobile without submitting it to the store first, without upgrading to Windows 10, and preferably without upgrading to VS2015?
Yes, it is possible to deploy WP8.1 app to the Windows 10 Mobile without submitting it to store and without upgrading to Windows 10 and without upgrading to VS2015. But you need to make sure you have the Windows 10 Mobile device for you to test.
If the Windows 10 Mobile device is in your side, you can unlock the Windows 10 Mobile device and deploy your app to the Windows 10 Mobile device by using the USB with the same method that you deploy it to the Windows Phone 8.1 Mobile device.
Or you can try to sideload your app on the Windows 10 Mobile device without submitting it to the store by using the Application Deployment tool. For more information, please try to refer to this article:How to deploy Windows Phone 8.1 apps with the Application Deployment tool.

Can Windows 10 UWP run on Windows 8.1 Devices?

I'm building a Windows 10 UWP app, and would like to know if it will run on Windows Phone 8.1 and/or Windows 8.1 Desktop. Windows 8.1 is still quite prevalent, and I would like to be able to reach these users with my app.
Windows 10 apps can only run on Windows 10 (and newer). If you want to target 8.1, you have to build a 8.1. A 8.1 should run on Windows 10 without any problems.

Windows Phone 8.0/coding4fun v1.6.1/InputPrompt disappears on Windows 10 Phones

I have an app, written for Windows Phone 8.0 with Coding4Fun version 1.6.1. When I run the app on Windows 10 Phone, Coding4Fun InputPrompt disappears when the keyboard appears. This happens only on device, in all emulators everything is ok. Any idea, what should I do?
I got this solved by upgrading the 8.0 project to 8.1 Silverlight project in VS2013. 8.1 Silverlight app runs now correctly also in Windows 10 phone.

Are windows 8 apps supportable on windows 10?

I am wondering if windows 8 apps will run on windows 10. I am considering to build an app on windows 8.1 but wondering if windows 10 user would be able to use it.
EDIT: And Vice versa are windows 10 apps supportable on windows 8.
Thanks.
Yes :) Windows 8 and Windows 8.1 will run on Windows 10.
But no, Windows 10 apps will not run on Windows 8 or 8.1.

How to check the app is running on Windows 8.1 OS in Winrt

In my windows metro style application i want to check whether it is running on windows 8 or windows 8.1. please help me.