I have a full fledged app built for windows 8.1...
Through my research, I discovered that the api changes between 8.1 and 10 is nt that much and an app built for 8.1 will work on 10..
So my question now is will a windows 10 app work on windows 8.1?
If yes, how can I go about it?
I've created a report on changes for WinAPI 8 vs WinAPI 10 that may help you to discover differences in details. It's available on this page. The report is generated with the help of the ABI-CC tool.
Since apps built for WP8.1 don't work on WP8, then I doubt that Windows 10 Mobile apps will work on WP8.1. As far as I'm aware, there are more differences between those two systems' API than between 8.1 and 8.0
Btw, are you asking about the desktop systems or the mobile ones (as the tag you used suggests)?
Related
I am an experienced dev that haven't been writing too much code lately, so a bit rusty and would like to have some help in creating the right environment for developing apps for BOTH Win Phone 8.1 (which is what I am carrying on me and would like to test with) and also Win 10 apps (UWP). This is in order to save myself a lot of time in trial and error, which is what I have been doing lately without success.
I have a box at home that is now Windows 10, and I think it was Windows 8 when I bought it. It has both VS 2013 and VS 2015, and I tried to download all the right SDK's to be able to use the Windows Phone 8.1 emulator. It was a nightmare, including going to the BIOS and enabling the Hyper-V thing (I think it worked at some point). Currently I'm having too many problems related to the dev environment, and its getting frustrating. Even the Win 10 emulator is not working. So no UWP emulator nor Windows Phone 8.1 emulator for me right now.
So instead of tackling these problems one by one, my plan is to buy myself a new laptop and build it right, with everything that I need in order to be able to write both Win Phone 8.1 apps, as well as Xamarin, and Windows 10 apps.
I'm wondering if I can ask for a comprehensive list of specifications for me, including recommended OS version (Will Win 7 work? I prefer it), VS version, SDK's, etc.. My goal is that after I buy and setup this laptop, all i'll have to do is just choose the right project and start writing.
Thanks.
Wow, downvoted just like that - not sure why so much.
If someone is looking for an answer or pointer, here's a reply in another forum, which helped me at least:
VS 2017 does not support development of Windows 8.1 store apps - phone or PC. See this link for platform compatibility. You will need to fallback to using VS 2015 for any Windows 8.1 projects. I do Windows 8.1 and 10 development on a single system and it works fine. You just have to have both VS 2015 & 2017 installed. Windows 7 will not work for developing 8.1 and 10 apps. Windows 8.1 has a Universal app target that allowed you to create a single app for PC and phone (I've never used it), but it is nothing like the Windows 10 UWP platform.
I have a requirement to develop a SDK(kind of class library) for Windows app supporting Windows 8.1 and Windows universal apps. Please suggest me the right type to choose for this.
At first I was thinking to use Portable class library supporting these 2 platforms but later on some researching found out Windows Runtime component(Universal apps) and read that using this would support app build using non managed code too(C++, JavaScript) which kind of seemed good for me. but when I try to refer this into a windows 8.1 app it says not supported, Do I need to build a separate windows runtime component again for this(I see Windows runtime component(portable for universal windows 8.1 template)?
Is there any chance I could build this without the need of having 2 projects for different platforms?
I've been able to successfully use a WinRT component targeting Windows 8.1 in a Windows 10 app before, but it might have changed and YMMV. Try it out.
I'm creating apps for windows phone pretty much since the beginning and I was wondering..
Will the Windows Phone apps run on Windows 10 (for Phone) ?
I could not find an answer anywhere and I wonder if the Windows Phone store will just disappear with the new version of Windows.
As Erno said: We don't know yet. But there have been a few clues indeed. I got a newsletter a week ago where Microsoft issued a new challenge on DVLUP that suggests making apps ready for Windows Phone 10 means at least porting them to Windows Phone 8.1:
https://www.dvlup.com/Challenge/c37655f6-1d31-4a67-aa20-dea314a7a03b
Also you can find this statement:
We’re more committed than ever to making sure that you can leverage your work to reach more customers, regardless of where they are, what device type they’re on, or what operating system they’re running. The best way to start preparing for Windows 10 is to start building universal Windows apps today for Windows 8.1.
http://blogs.windows.com/buildingapps/2015/01/22/windows-10-is-empowering-developers-to-dream-again-3/
So with all this in mind Windows 10 seems to drop Silverlight for Windows Runtime (at least they are heavily promoting migrating apps there).
After upgrading my 830 to Windows 10 preview, it seems like even Windows phone 7 apps still work under Windows 10 for phone.
I still wonder how are they going to handle the different stores though.
Anyway, I got my answer.
Wait and see !
Am sure that a Windows Phone 8.1 silver light app would continue to run on Windows 10 Mobile you don't even need to upgrade to Windows 10 OS running Visual Studio 2015 to manage your app on Windows 10 Mobile you can continue to develop with the existing development environment(Windows 8.1 and VS 2013). For the query related to the store please follow the link Get ready for the Unified Dev Center dashboard preview and upcoming Store changes
A user recently reported a problem in regards to not being able to answer "quizzes" in some of the web pages I display in my app. The first thing that popped to mind was that it could be a bug with my app, a bug with the web browser control or some unreliable CSS & Javascript code provided in the web pages.
After investigating it some more i.e. tried it on my web browser on pc in mobile mode and tried it in the regular browser, I noticed that it worked as expected, so I thought it was fair to assume that it wasn't the web pages that were the problem. So it left my app or the web browser control as potential problem.
My app was originally created as a windows phone app for Windows Phone 8 so it would be compatible with both windows phone 8.0 and windows phone 8.1 but to my surprise, after taking a backup and then converting my app from 8.0 to 8.1 the problem got resolved which means that the bug must be coming from the web control itself rather than in my code.
I don't know how popular these questionaires/quizzes are but so far that seems to be the only thing that's affecting the app in regards to web pages, so what do I do?
Now, to my questions (sorry for the long history!):
Will a WP Silverlight 8.1 app work on both Windows Phone 8.0 and 8.1? Sorry if it's a silly question but I've got to ask. If it will, please ignore the other questions.
Should I leave the app as a Windows Phone 8.0 app as it could be affecting a minority of users that want to answer questionnaires/quizzes?
Upgrade the app to Windows Phone 8.1? Not everyone is on 8.1 or 8.1 preview for developers, so this could be a problem??
Upload 2 different versions? Maybe specifically name them as app 8.0 and app 8.1? Feels odd, no? This would also entail maintaining 2 different versions which is a complete pain or is there a better way to handle this i.e. Linked file in the second project?? I haven't checked yet what's changed between the 2. All I know for now is that once I converted my project from 8.0 to 8.1, it worked.
Is there a way to upload both versions to the store as one app and will Windows Phone download the relevant version?
Thanks
Internet Explorer in Windows Phone 8.1 is newer, this is why it works better.
1) No.
2) No.
3) Yes.
4) Yes. You can link files from the one project to another (use add as link feature in Visual Studio).
5) Yes. Windows Phone store can handle 7.5, 8 and 8.1 version very well.
As Microsoft said that windows 8 and windows phone 8 share the same code base. If I use visual studio 2012 RC write an application for windows 8. I want to know whether I can install and run the same application on windows phone 8?
If the answer is yes we can prepare ourselves for windows phone 8 SDK by learning Visual Studio 2012 RC for windows 8 today!
Right now they haven't announced everything, so this is just my speculation.
I guess that you will not be able deploy the same app (xap file) to WP8 and Windows 8. This by design. Why? Because they are very different systems. Your beautiful, fast and awesome Windows Phone app will suck on Windows 8. There is no silver bullet. It's the same for HTML. You have to create separate mobile version of the web app, otherwise nobody will use it.
They share the same kernel and probably plenty of APIs. But that doesn't mean the runtime environment in which your applications run is the same. E.g. very different form factors make it necessary to adapt the app anyway. Since they never said that Windows Phone 8 has the same application programming model as Windows 8 you can at the moment safely expect not to be able to deploy the same app to both Windows 8 and Windows Phone 8.
That being said, you probably can expect to share a lot of code between both systems, especially if you're using either C# or C++ (with native apps coming to WP8 too).
Application compiled for WP8 won't just run on Windows 8, but you can share lot of code into common libraries.
There is a chapter in Windows Phone 8 SDK about targeting both Windows 8 and Windows Phone 8 development. Mostly is possible either by Portable Class Libraries, referencing common files both in W8 and WP8 projects or using Windows Runtime Components.
http://www.microsoft.com/en-us/download/details.aspx?id=35471
Many Application designed for wp8 work on windows8 also as The developer have also to decide whether it will work in both of then,usually windows8 has not enough graphic and motion control so some WP games do not run on windows8,, You can always see any app permission notice to understand whether it work on wp8 or not on other hand there were also some windows game that has as much graphics that WP could not run,,
Like if you want game like assassins creed it will run on both operating system(WP,window) but in different manner
So it's chooses by game properties that define cap package to run or not