I have read about the CoreTelephony class and in this CTClass can check caller and find state of call....
But when and how to use this......
I think my application goes to background when call start..
help please or correct me......
It is not possible with the official SDK. The best that you can do is determine if the user is on a call. You can do this by inspecting the size of the status bar frame.
[UIApplication sharedApplication].statusBarFrame
If your asking if you can track phone calls in the background, you can't in all situations.
If you want to know if, at any point in time, when your running, you can. You can access the 'CTCallCenter' currentCalls property and it will give you the state of the call at that point in time.
If you want to track if a incomming call the cause of your application going to the background, you can use the 'CTCallCenter' callEventHandler property.
Not quite sure what you're trying to accomplish but after the call ends the user should automatically be brought back to the app.
It's not possible to get this information with the current SDK, most likely for privacy reasons. I'd recommend filing a feature request with Apple (http://radar.apple.com) however, I doubt it's something they're likely to include in the future.
Related
I want to implement the feature "DO Not Disturb" in iOS 6.
First question : Is there any framework or api apple exposed to control them through the code?
After lot of googling i found an application on the app store "Call Bliss" that provides this functionality and complete control over the calls, sms and mms.
Can anybody explain how this application works?
or
any other work around to learn and implement this feature in iOS?
Thanks in advance...
From reading the description of Call Bliss, it actually sounds quite simple in how it works.
1) Do Not Disturb must be enabled at all times. Not scheduled, not off, but on at all times.
2) It requires you to set the contacts group for exceptions to Do Not Disturb to "Bliss Exceptions". This implies that the application requires access to your address book.
From there, it's probably wise to assume that it manages the contacts in the "Bliss Exceptions" contact group based on whatever parameters you set in the application. It adds and removes people in that group based said parameters.
So to answer your question, no, there is no framework to do this. The way they're doing it is likely the only way to do it currently with no public API for managing do not disturb status.
There is no public API to even access do-not-disturb functionality.
I think this is what the app does:
The app creates and manages its own contact list (called Bliss exceptions)
the user have to select it in the do-not-disturb preferences.
The App can run in the background because it uses location tracking (probably significant only to save battery life), so when the user changes locations it can update the exception list.
When a call is received do-not-disturb system functionality checks the Bliss exceptions list and silences all calls from contacts on the list.
Please note that reviewers complain about the lack of time based call blocking. It is impossible because the app can only execute code when the location is changed.
In my Knowledge there is no way to implement it via code. There is no public api provided for restricting the calls.
But there is an API for detecting the calls : CTCallCenter and a FrameWork called CoreTelephonyFramework
I would like to know if there is a way to know if a user removes my app from his iphone (permanently).
(I would like to handle this kind of event in order to remove it from my DB on my server)
Thank you.
Simple Answer. No. Your best option is to check for inactivity for x amount of time and assume that means it's deleted.
I'm developing a navigation app which uses the UIBackgroundModes=location setting and receives CLLocationManager updates via didUpdateToLocation. That works fine.
The problem is that the intervals between location updates are very hard to predict and I need to make sure the app is called something like once every few seconds to do some other (tiny) amounts of work even if the location did not change significantly.
Can I do that? Am I allowed to do that? And how can I do that?
I found a blog post, but I'm not sure if this is really the way to proceed.
Permissible background operations are pretty limited in scope. You cannot, for example, just leave an NSTimer running to perform some arbitrary code while your application is in the background - so the simple answer to your question is no, you cannot. Definitely read the Apple documentation regarding what is and isn't allowed (most of what's allowed pertains to apps that "need" specific ongoing services, like the ability to play music, or respond to location changes (GPS type apps...). You may be able to construct a viable solution by responding to location or significant location change notifications...
Can i send location updates to my server in background from iOS4?. I want to get users location changes and post it to a server using a web-service call. Main question here is, is it possible to call a web-service or http-post while app is in background?
Absolutely, and you may want to review this earlier thread when I asked the same question - credit due to #RedBlueThing for providing the key information.
I've written this up as an example on our blog as well. The key to this working is beginBackgroundTaskWithExpirationHandler: without that you won't get reliable results as it will perhaps work some of the time, but not others.
Yes. You can basically do anything you want in the background callbacks.
I'd like to add that you should make sure you are aware of the possible impact on battery life, as the antennas may have to be turned on to perform your requests. Perhaps you could store the locations in core data, and post it to the server when the app resumes.
But there's no technical reasons to not do it, and afaik it will pass review too.
I'm trying to develop an application for a jailbroken iPhone similar to Mcleaner or iBlacklist.
What I want my app to be able to do is intercept SMS or Phone events and handle them before they're sent to the appropriate receiver. So for example, I want the application to get an SMS event, compare the sender to an array of numbers, and either process the data or ignore it and pass it off to the SMS app.
In MCleaner, you can define a blacklist of numbers, and if a text message is received that matches the blacklist the user won't get an alert from the phone and the data is instead handled by MCleaner.
How would I go about getting these events, and further, how would I get these before the appropriate apps receive them? From what I understand, I'd need to become a first responder for these things, but I really have no clue where to start. I can't seem to find any hints on how I'd go about this as this app will not be calling apple classes to get the data..
Thanks.
I can only guide in with this, sorry, the code isn't mine to give.
In memory, all the action calls are all just pointers. What you have to do is over ride the pointer to make it point to your own function. Once you do that, you do w/e you want in your function, and then call the default function call. This ensures the integrity of the action calls and allows you to intercept the actions.
You need to use the CKMessage class.
Check this out: http://hexorcist.com/private_frameworks/html/interface_c_k_message.html
and this: http://www.ifans.com/forums/showthread.php?t=232745