IOS audio playback

Source: Internet
Author: User
IOS audio playback uses the avfoundation framework. It contains three main classes: avaudioplayer, avaudiorecorder, and avaudiosession. They are responsible for audio playback, recording, and configuration, and all have the corresponding delegate protocol. Supported formats include: CAF, m4a, MP3, AIF, WAV, AU, SND, and AAC. provides basic playback operations: Create, prepare, play, pause, skip, and stop, and supports the use of multiple avaudioplayer objects. Supports volume control, loop playback, and left-right channel settings.

The avaudioplayerdelegate Protocol has the following important methods:

The audioplayerbegininterruption method is called when an application is interrupted (for example, an application is called by answering a call or pressing the Home key. Audioplayerendinterruption method, which is called when the interrupt ends and is returned to the application. Audioplayerdidfinishplaying: successfully: method. This method is called after the audio playback is complete. If the value of successfully is yes, the audio is played normally. If the value of NO, the playback ends because the audio data decoding fails. Audioplayerdecodeerrordidoccur: Error: method. This method is called when an audio decoding error occurs during playback.


Instance: 1. Create an empty application project and add the homeviewcontroller page.

The homeviewcontroller. H code is as follows:

# Import <uikit/uikit. h> # import <avfoundation/avfoundation. h> @ interface homeviewcontroller: uiviewcontroller <avaudioplayerdelegate> {}

@ End

The homeviewcontroller. m code is as follows:

# Import "homeviewcontroller. H "@ interface homeviewcontroller () @ end @ implementation homeviewcontroller-(void) playaudiofile :( nsstring *) soundfilename {nsstring * filename = [[nsbundle mainbundle] pathforresource: soundfilename oftype: @ "MP3"]; nsurl * fileurl = [nsurl fileurlwithpath: Filename]; nserror * error = nil; avaudioplayer * player = [[avaudioplayer alloc] initwithcontentsofurl: fileurl error: & E Rror]; If (! Player) {} else {[Player setnumberofloops:-1]; // The default value is 0, indicating that the playback ends once. If it is set to a negative value, the audio content will be played continuously. [PLAYER setdelegate: Self]; [player play] ;}}

// Pause playing when the program is interrupted

-(Void) audioplayerbegininterruption :( avaudioplayer *) player {[Player pause];}

// Resume playing when the program ends and returns to the program.

-(Void) audioplayerendinterruption :( avaudioplayer *) player {[player play];}-(void) viewdidload {[self playaudiofile: @ "mm"]; // play the audio [Super viewdidload];}

@ End


Download source code:/files/Hanjun/audio.rar

Related Article

E-Commerce Solutions

Leverage the same tools powering the Alibaba Ecosystem

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.