Create a Passcode for windows mobile application - windows-phone-8

i Want to implement a passcode let say of 4 digits like we usually implement in Android. I know how to create it in android, but how can i make it done for windows phone 8.

What do you mean by passcode? Do you want to implement it in your own application as a special login page or do you want to make it global for the entire phone?
If the former, simply create a special intro page.
If the latter, than it cannot be done at all since you do not have access to global functionality.

Related

Html link phone number detect if application is installed

If I link a phone number with HTML like this:
123456789
The Browser gives me a response if I want to start an application, in my case Skype.
Now my question, is it possible to create a selfmade window and tell something like download and install Skype if none suitable application like Skype to use that functionality is installed.
That's not possible. Which program is used to open a resource is solely at the discretion of the user's browser/computer. There is (and should be) no way to interfere with that. It would cause terrible security problems if a webpage had the ability to direct a browser towards a certain program or register if a specific program is installed.

Is there a Common Sharing UI in Windows Phone 8?

I know how to use the various tasks/launchers in Windows Phone to share a link or status on twitter, etc. However, is there anything built into the Windows Phone 8.x API to create a sharing screen like the one shown in the image below?
I've seen this same screen in both native Windows Phone apps (e.g. when tap-n-hold to share an app in the app list) as well as 3rd party apps (e.g. IMDB). Seeing this, I'd like to think this is available to be used by custom apps
Can anyone tell me if this exists as a shared component/API? If not, does anyone have some sample code for creating the page dynamically?
Ok, it turns out there is an API (via the Share Contract) in Windows Phone for this. It is called DataTransferManager.ShowShareUI and you can find out more information about it here.
Unfortunately, there is not others shared component/API (I also try to find it).
But by using Launchers you help provide a consistent user experience throughout the Windows Phone platform, so users already know "how to share".

Overlay an app on top of another

Any way I can write a windows store app (for phone or other) which will allow me to draw on top of other apps? In other words, I'd like my app to run in the background and not handle any user gestures but be able to draw on a semi-transparent overlay / canvas above any other running apps. I can do this in windows 7 but WinRT is new to me.
thanks
I do not believe it is possible due to the sandboxed nature of Windows Store Apps to do something like this (much akin to iOS). Windows 8 has much tighter security in its applications, so much so that you can't even take a screenshot in a metro app, because if a user has split the screen to hold two apps, you could potentially capture information from the other application.
Please correct me if I'm wrong, but I've encountered this problem before and have found no viable solution.

taking automatic photos windows phone

I want my windows phone application to take automatic photos without the users intervention.
The cameraCaptureTask.Show() method opens the camera application and this is not what I want to do. I want to be able to take photos without asking the user to click on anything.
how can I do that?
Use PhotoCaptureDevice documented here: Capturing photos for Windows Phone.
However, when do you want to take photos? What is the logic behind it? Be aware that your application must be running to take photos programmatically.

Windows Phone User Login

I am wanting to start programming games on the Windows Phone and wondering what the best way is to log a user in a session on the Windows Phone. Is it possible to do it with XBOX LIVE? Or do I have to hand-craft my own Login system?
You can have a look at Windows Azure Mobile Services (http://www.windowsazure.com/en-us/develop/mobile/) to help you out in authentication mechanisms, enabling you to have out-of-the-box support for Microsoft accounts, facebook, google and twitter (it's currently free and you can also use it for more things than just this).
If you don't want to use any external support, then you'll have to have your own hand-crafted login system and somewhere to hold it in (you could also use Mobile Services for that).
If you need any sample code, just drop me a line and I'll try to gather something up. :)