I am attempting to download a contact from a webservice and want to save it to the SIM card as a .vcf file in order to use the 'import from sim card' functionality on wp7. I am not seeing any access to the sim card in the msdn refeference. Does anyone have an idea of if this is possible?
Thanks!
mark
There's no way to access the underlying hardware of a wp7, this includes the sim card.
You could save each contact at a time using a SavePhoneNumberTask, but you would need to ask the user permission before it imports or your app will fail certification.
As Joseph mentions, you cannot write directly to the SIM card. Given the extent of information available in VCF, I'd recommend using SaveContactTask to allow the user to save the details.
Doing so will navigate away from your application while the user saves the contact, but it will notify you after come back (even if they cancelled)
Related
First, forgive my complete ignorance. I've tried to research this, but I clearly don't know the correct terminology for what I'm trying to accomplish.
I'm trying to set up NFC chips that link to separate, unique profiles. The profiles will be to a web app, but I want to hide the hyperlink to prevent someone from being able to copy the direct link to the profile and put it into another NFC Chip.
Example: A Plastic Business Card with an NFC chip that takes someone to a unique web app profile on their phone. I want to make sure someone can't create a new card and copy/paste the profile link into the new card on their own.
Note: The NFC Chip at this current moment will NOT be used for contactless payments.
Thanks.
So first point, security on NFC is hard, you can make it more difficult but not impossible to get the data from the card depending on how tightly you can control access to readers etc.
But from the sounds of it you are looking just to prevent casual copying.
It also sounds that you want the reading device to be a reading device.
So there are various techniques you can use to prevent casual copying, below I'll list a few in some order of complication (some can be used in combination with others):-
There is a common theme and drawbacks to some of these techniques.
You have to write your own phone App and get it to display the web App in it's own webview as you do not want the URL shown in a standard web browsers address bar.
Any protections you put in the phone App can be extracted from it by reverse engineering the phone App.
Use a NFC Tag like the Ntag21x range that has read password protection. You would write a phone App that knows the password to read the URL and then the App displays it
Encrypt the data on the card using standard encryption method and write an phone App that knows how to decrypt it and has the encryption keys to read the URL
Don't use a standard data format like Ndef but use your own data format again you phone app needs to know how you formatted the data to display
You can make reverse engineering of item 1 and 2 harder by not storing the "secrets" in the App itself but have it get it across the network at run time, but getting the secret can be reverse engineered or sniffed from the network.
I want to know please if it is possible to build a cast app for google home which casts content from an app to Chromecast using Google home. For example, "Ok google, play XXXAudio/videoContent from XXXApp on the TV."
This means that I want to cast a content from XXXApp to Chromecast, but without using the phone to do that, but rather using Google home.
I have imagined doing that like : Google home retrieves the requested data from the XXXApp then casts the content, through the receiver, to Chromecast. The requested content is then displayed on the TV.
Any help or advice will be appreciated.
It depends exactly what you want your cast app to do.
If you want to be able to provide media just like someone like Spotify or a local streaming radio station does, you need to parter with Google. You'll then have access to a range of partner solution feed options.
If you have other cast apps that you want, or other things that you may want to cast to a tv (for example) - these aren't currently available. However, Smart Displays using the Assistant are coming shortly, and these may start to introduce capabilities that will also be available for cast devices.
One could probably do something that started the cast app from an existing supported device and then, once running, control it via an Action. But this isn't something directly available right now.
I have made a Parse-based app that allows the user to send a push notification to everyone who downloads the app. It's a kind of quick public address system for a congregation, school, club, etc.
Other leaders have expressed an interest in my app for their communities. But these people are not tech-savvy and have no interest in becoming Apple developers for $100 a year, so building custom apps for them is not an option. Even if I did it for them, I would be concerned that they would mess something up that would require a lot of time on my part to repair. They just want to use the app for their communities.
My question: Could I make custom apps for these groups, keep them on my iTunesConnect account, and simply make a new Parse account for each app? That way, the group leaders would only need to know how to log into Parse and send a push notification on the Parse website.
Thank you,
Eli
You could. It could be done with a single app that everyone downloads and then configures to connect it to their specific parse app.
It's possible that you could write the app so it doesn't know the parse account details and they need to be entered on the device. It's also possible that you could supply that detail with an invite e-mail that opens the app and has the details in the URL query.
I am working on an app that requires payment to be collected from customers. I have few questions related to braintree integration with my app. I am actually struggling a bit with the workings of the braintree so thought of checking here.
The PCI compliance is critical so i do not want to store anything in my app or the backend server. Can I achieve this with braintree? I also don’t want customer to retype the credit card information when they come back to the app. As I understand there is a Vault functionality which can do this but I was not sure.
Do I invoke the braintree API from iOS app directly or do I need to first send the credit card information to my backend layer and then invoke the Braintree APIs from backend. I don’t want to transmit anything to my server due to the PCI compliance so I am hoping that I can just invoke the braintree API directly from the iOS APP and when user comes back, again invoke the braintree Vault API from the APP and pull the previously used credit card.
appreciate if anyone can pls. direct me to some kind of architecture / white paper/best practice on this. I went thru the APIs document on braintree site which provides and good API documents but i could not find the high level architecture document on this.
Thanks in advance..
Yes. https://articles.braintreepayments.com/control-panel/vault/overview
Yes use from iOS. https://developers.braintreepayments.com/ios+ruby/start/hello-client
for number three... I'm not sure where to find that. Definitely ask support
How can I detect if a yahoo user is online or offline? I got connected to the yahoo server but I dont know what kind of packet to send to yahoo and then where in the received packet I can find the information about the user?
Thank you.
You may want to try using libyahoo2 (or reading the source), they also have partial YMSG9 protocol documentation which may be insightful.
For detecting user online offline status programatically, i dont have any idea. But I can suggest a way out, if you can do it programmatically.
We detect user by the chat environment in yahoo. If your partner is appearing offline, then from chat window we try to load environment. If environment gets loaded 100% on the other end then the user is in invisible mode else he is really offline.