Is there any working 3rd party sdk is available for windows phone 8 & WInRT, I tried with Higlabo,SharpDropBox etc. But all of these having issues with auth process. If anyone know how to authenticate Dropbox at least creation of signature please help me.
Dropbox don't currently have an SDK for Windows Phone or Win RT.
They do have a a REST API (the best you'll get): https://www.dropbox.com/developers/core/api
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I am starting first project for Windows Phone and it should work on at least Windows Phone 7.5. My question is if should I write app on Windows Phone 7.5 or should I write two app versions - once for Windows Phone 7.5 and another for Windows Phone 8?
I know that app which works on WP7.5 will also work on WP8 but what would you recommend? What would you do?
If you think that writing two apps for both versions is a better idea then should I write app on WP8 first and at the end remove special WP8 features to downgrade it for WP7.5 or maybe I should write WP7.5 app and then add some WP8 features to upgrade it to WP8?
I am asking because I want to learn WP developement and I have two tutorials: "WP7 jumpstart" and "WP8 jumpstart" tutorials (from MSDN) and I am wondering If I can skip WP7 and start directly with WP8?
Standard way will be to create a Windows Phone Class Library that will contain all the code except Page, View or Windows 8 specific code and than create Windows Phone App and set dependency to above created Library project. Now as Rowland Shaw as suggested you can target the Windows Phone app to 7.5 so that it will work for Windows 8 as well and if you want to use any Windows 8 specific API you can create separate application with same Library reference so that all the common code will not be duplicated.
Referr MSDN Link for the same.
If you wish to normally support all screen sizes, you should create 2 apps. Because WP7.x supported only 1 screen resolution, and running on WP8.x with larger screen the app will remain small size.
You would have to use WP7.5 if you are not going to impelement any feature which is present in only WP8
Here is a little question bothering me around, everybody is asking about will wp7 apps run on wp8? but my question is vice-versa. Apps built using sdk8 for wp8 will run on all previous windows phone mobiles especially on wp7.
No, SDK8 uses some Windows phone 8 specific APIs, so Windows phone 7, 7.5, 7.8 users won't be able to download you app.
very straight forward question. My company has developed a windows phone 7 app and have been testing it on a windows phone 7 device. Can we safely assume that the same app will be backwards compatible and work seamlessly on a windows phone 8 device such as a Nokia Lumia 920?
Thanks in advance!
Yes it will work. But it won't take advantage of all the WP8 features like a real WP8 app would. I'd suggest that you create a copy of the project and update it to WP8 for a better performence. Also replace any listboxes with LongListSelectors for example.
In most scenarios it should just work, but you should check this list of known breaking changes and you should also test your app on new devices thoroughly, just in case.
For example FMRadio class is no longer working on WP8 and there are other similar issues:
App platform compatibility for Windows Phone
Could you tell me how I can integrate In-App to Windows Phone 7.
I know that with Windows Phone 8 this feature is native. But we need implement it to WP7 too.
Service should provide opportunity to pay via Card (Master, Visa), SMS, or something else.
I know about Linxter, but it's private beta and developers don't respond to us.
Maybe other services exists?
Thanks.
As I Know you cannot integrate IAP (In App Purchases) in Windows Phone 7 as its dependent on some libraries that are not available for Windows Phone 7 Mango(7.5) and its only exclusively available for Windows Phone 8.
But You can do two things.
If your app is compiled with Windows Phone 7.5 and if its runs on Windows Phone 8 Devices then we can put IAP through reflection method. So If Your Windows Phone 7.5 Compiled app runs on 7.5 firmware devices then there will be no IAP but if the same app runs on 8.0 firmware devices then it will implement IAP.
http://channel9.msdn.com/Shows/Inside+Windows+Phone/Inside-Windows-Phone-45--Adding-In-App-Purchase-as-a-light-up-feature-to-your-Windows-Phone-7-Games
You can use any payment gateway and integrate into your web and once user clicks for Payments then you should open that payment page in webbrowser task and web will be communicated through secure Connection "HTTPS".
I hope it will helps you :)
I am iphone and android developer.I know how to use phone gap for iphone app and android app development.But I am new for windows phone 7 app development using phonegap.I dont know how to start windows phone 7 application development using phone gap.
Please give me advice for this query.
Thanks in advance.
Looks like PhoneGap doesn't support Windows Phone yet.
This post seems to suggest its close though and there is an alpha/beta you can start developing
http://programmersgoodies.com/phonegap-for-windows-phone-7
PhoneGap support for Windows Phone 7 is still in a "pre-alpha" state.
From a practical stand it's not realistic to start developing with it. Some people have started (and apparently submitted apps based on it) but there is no guarantee of future compatibility with what they've done.
When available, it will also only support phones running Mango.