WP8 stop OS from processing tags when phonegap-nfc is in foreground about phonegap-nfc HOT 13 CLOSED

+1 for a solution :)

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Given a tag with a URI - TNF_WELL_KNOWN, Type U, Payload http://windowsphone.com

My WP8 code can read NFC tags OK with the following

proximityDevice.SubscribeForMessage("NDEF", MessageReceivedHandler);

MessageReceivedHandler manually parses the NDEF message

The problem is that even though my app is running, WP8 prompts the user "Receive content? Someone is sharing a website from windowsphone.com with you." This WP8 dialog shows up over my app.

When my app is running in the foreground I want WP8 to ignore NFC tags. (This is what Android does with foreground dispatch.)

I tried adding additional subscribers for "Windows", "WindowsURI" but that didn't work either. I need something like Javascript's e.preventDefault().

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I assume you took a read through https://ndef.codeplex.com/ ?

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Half way down this page: http://developer.nokia.com/Community/Wiki/Windows_Phone_8:_Treasure_Hunt_Application_Example_using_NFC_and_Nokia_Maps_API

Search for "using Windows.Networking.Proximity;"

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@JohnMcLear Just tried the NDEF Demo example from ndef on codeplex. It has the same problem when scanning a URI tag. The app reads the tag, but so does WP8, so the user gets a dialog box over the app.

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oh boy ;\ looks like that's the best experience we can get now then?

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The Nokia NFC Write app is able to suppress WP8 from reading tags while it is writing to a tag
http://www.windowsphone.com/en-gb/store/app/nokia-nfc-writer/709e64e0-5849-4ce4-b252-b7b252aefacf

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Just an update, me and don both bumped folks at MS and NOK about this issue, we're awaiting a response.

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http://msdn.microsoft.com/en-us/library/windows/apps/hh701129.aspx

Windows will always handle "WindowsUri" messages by prompting the user to view a received URI ... even if another app is also subscribed to "WindowsUri".

Windows will always handle "WindowsMime" messages by prompting the user to view the mime content that was received, even if an app is also subscribed for the mime content.

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Testing other apps:

http://www.windowsphone.com/en-us/store/app/nfc-publisher-pro/45f5f690-c894-4087-9cc0-708d7624b886 manages to suppress during write, not during read. <-- might be worth contacting this author? -- appears to be the case that if you are publishing at the time it will suppress a message? [email protected] being their email

https://projects.developer.nokia.com/nfctagreader does not suppress on read

http://www.windowsphone.com/en-gb/store/app/nfc-tag-writer/895711f1-2b38-4af1-8780-f6501f4371e0 does not suppress on read/write

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@JohnMcLear it is probably fine to call nfc.write(message, success, failure) anytime on WP8, since WP8 probably doesn't attempt the write until a tag is in range. Android is different where nfc.write must be called from inside the callback when a NFC tag is in range. I'll see if that works, then figure out the correct way to document it or change the code.

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+1 @don -- Thanks

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Documentation looks OK https://github.com/chariotsolutions/phonegap-nfc#nfcwrite

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