[IOS:OC] Simple audio playback

Here's an example of a local resource.

Play long music:

#import <AVFoundation/AVFoundation.h>    //url: Network resource path, you can also convert local resources into network resource path    //Get a resource locally, and convert to URL    nsurl * URL = [[NSBundle mainbundle]urlforresource:@ "background music" withextension:@ "CAF"];        Avaudioplayer *player = [[Avaudioplayer alloc]initwithcontentsofurl:url Error:nil];    _player = player;  You need to define a property to point to him, otherwise the method ends up being destroyed, the music stops    //Specifies the number of cycles to play, 0 for once    //or any negative numbers for infinite playback    [player setnumberofloops:-1 ];        Ready to play    [player Preparetoplay];    Play, launch a thread to play    [player play];

Play a short tone, such as responding to a sound when the button is pressed:

    nsurl* URL = [[NSBundle mainbundle]urlforresource:@] sound. * "Withextension:nil";    Create a soundid    systemsoundid soundid;    Audioservicescreatesystemsoundid (__bridge cfurlref) (URL), &soundid);    Play     Audioservicesplaysystemsound (Soundid);

[IOS:OC] Simple audio playback