You want to be able to record audio files on an iOS device.
in the AV Foundation framework.
AVAudioRecorder class in
the AV Foundation framework facilitates audio recording in iOS
applications. To start a recording, you need to pass various pieces of
information to the
initWithURL:settings:error: instance method of
This is a local URL. The AV Foundation framework will decide which audio format should be used for the recording based on the file extension provided in this URL, so choose the extension carefully.
Examples include the sampling rate, channels, and other information that will help the audio recorder start the recording. This is a dictionary object.
NSErrorwhere any initialization errors should be saved to
The error information could be valuable later, and you can retrieve it from this instance method in case something goes wrong.
settings parameter of the
initWithURL:settings:error: method is
particularly interesting. There are many keys that could be saved in the
settings dictionary, but we will
discuss only some of the most important ones in this recipe:
The format of the recorded audio. Some of the values that can be specified for this key are the following: