Popping Sound

HiI am working on a kind of VoIP app for the iOS and I am facing 2 problems.1) I would like to monitor the telephony state of the device in order to be able to reject incoming VoIP call when the user is already talking on a telephony call.I am already listening to the events from the CTCallCenter class, but the class does not deliver events when my application is in the background/suspended state.Furthermore the currentCalls set is NOT updated when I check the state while my app in running in the background processing mode.Is there any other way to get the telephony state while the application is running in the background mode ?2) I would like to reject an incoming telephony call (with a busy tone) if the user is already talking on a VoIP call.On the net I found suggestions to use the CTCallDisconnect API, but this is a private API.Is there any public API in order to programmatically disconnect a telephony call ?If this is not possible I would like to reduce the volume of the ringtone/audio notificat

I'm trying to calculate a hash of an audio file so I can check if its unique and prevent duplicates. I'm looking at CryptoSwift but I'm worried it won't work with large audio files. Whats the best way to get a hash on iOS?

Hi!Does anybody know, where I can get good examples/explanation on how to use Swift(pref. 2.0) and Cocoa(OSX)?I'm familiar with programming languages (C/C++), but not very much with GUI programming, although understanding the basic concepts.So, want to understand how to code in Cocoa using MVC and in this context the use of delegates and protocols, which is recommended by Apple.All the examples I found so far, are either rather code fragments or don't go to much into the details of the basics (delegates, MVC) that I need to understand.But just reading the Cocoa API I'm not getting the insight to be able to put this in code.I would like to explore this on my own, but I'm missing some kind of a sound starting point to progress from there.Thanks for any kind of support...

I have a photo app with an action extension (not photo editing) that works well in Photos. I'm in the process of converting that app to freemium (different bundleID but same display names for the extension and app) and at one point I installed the new app with the original app still there during testing on a real phone. Then I saw two identical actions when a photo is selected and the action button is tapped.So, I looked and I may (or may not) have mixed bundleIDs for the various parts (or something), so I changed the display name for the newest app (over and over).Long story short, after deinstalling the original app, resetting the iPhone, cleaning the project, quitting/restarting Xcode, deleting both apps from the phone, reinstalling the new app alone, etc. when I try to use the free app on my phone bizarre things happen (and BTW, everything works fine in the simulator).What happens is that when I select a photo, tap the action button, my action icon is not there. But when I look under More… the single acti

I am working on a music visualization program that takes the audio in for the iPhone mic and based on those parameters I generate video.The problem is, I want to be able to use airplay as a second screen to display the visuals while reading the audio still in from the iPhone mic. Is there a way to do this?Using[session setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionMixWithOthers error:&error]Does not work because it is incompatible with AirPlay. And according to Apple documentation, none of the categories you can use with AirPlay (non-mirror mode) allows you to use the mic. Is there some other way to do it? Because I believe I have seen some apps that do use mic in while using airplay.thanks.

The Lightning Digital AV Adapter provides a HDMI output port. Is HDCP always turned on when audio/video content is outputed through that port to an end device, say a digital TV?