How to save a recorded audio in objective C (iPhone) -

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i using av audio framework record audio files on iphone. here current code : 

nsarray *dirpaths; nsstring *docsdir;  dirpaths = nssearchpathfordirectoriesindomains(                                                nsdocumentdirectory, nsuserdomainmask, yes); docsdir = [dirpaths objectatindex:0]; nsstring *soundfilepath = [docsdir                            stringbyappendingpathcomponent:@"sound.caf"];  nsurl *soundfileurl = [nsurl fileurlwithpath:soundfilepath];  nsdictionary *recordsettings = [nsdictionary                                  dictionarywithobjectsandkeys:                                 [nsnumber numberwithint:avaudioqualitymin],                                 avencoderaudioqualitykey,                                 [nsnumber numberwithint:16],                                  avencoderbitratekey,                                 [nsnumber numberwithint: 2],                                  avnumberofchannelskey,                                 [nsnumber numberwithfloat:44100.0],                                  avsampleratekey,                                 nil];  nserror *error = nil;  audiorecorder = [[avaudiorecorder alloc]                  initwithurl:soundfileurl                  settings:recordsettings                  error:&error];

now have function , want send sound.caf file function like: 

nsdata *sounddata = [nsdata datawithcontentsoffile:[[nsbundle mainbundle] pathforresource:soundfilepath oftype:@"caf"]];

but reason above line seems return 0kb file.

any suggestions?

in code, file url not global. try code given

first of have start new audio session:

-(void) initaudiosession {      avaudiosession * audiosession = [avaudiosession sharedinstance];          [audiosession setcategory:avaudiosessioncategoryplayandrecord error: &error];          [audiosession setactive:yes error: &error]; }  -(void) recordstart {  nsarray *dirpaths = nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes);      nsstring *docsdir = [dirpaths objectatindex:0];      tempfilepath = [nsurl fileurlwithpath:[docsdir stringbyappendingpathcomponent:[nsstring stringwithformat: @"%@.%@",audiofilename, @"caf"]]];       nsmutabledictionary* recordsetting = [[nsmutabledictionary alloc] init];     [recordsetting setvalue :[nsnumber numberwithint:kaudioformatappleima4] forkey:avformatidkey];     [recordsetting setvalue:[nsnumber numberwithfloat:44100.0] forkey:avsampleratekey];      [recordsetting setvalue:[nsnumber numberwithint: 2] forkey:avnumberofchannelskey]; stringbyappendingpathcomponent: [nsstring stringwithformat: @"%@.%@",audiofilename, @"caf"]]];       recorder = [[ avaudiorecorder alloc] initwithurl:tempfilepath settings:recordsetting error:&error];     [recorder setdelegate:self];      [recorder preparetorecord];      [recorder record]; }  -(void) stoprecording{     [recorder stop]; }  -(void) playrecord{     avplayer = [[avaudioplayer alloc] initwithcontentsofurl:tempfilepath error:&error];     [avplayer preparetoplay];     [avplayer play]; }

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