ios - Apple Mach-O Linker Error for "_AudioServicesCreateSystemSound" and 1 other -


i'm relatively new ios development , i've come across error. adding sound project , i've imported audiotoolbox.framework when try build project gives me above error.it gives me "apple mach-o linker error _audioservicesdisposesystemsoundid" , "linker command failed exit code 1 (use -v see invocation".

this code:

currentlocationviewcontroller.m 

@implementation currentlocationviewcontroller {         cllocationmanager *locationmanager;         cllocation *location;         bool updatinglocation;         nserror *lastlocationerror;         clgeocoder *geocoder;         clplacemark *placemark;         bool performingreversegeocoding;         nserror *lastgeocodingerror;         uiactivityindicatorview *spinner;         systemsoundid soundid;     }

and:

- (void)viewdidload {     [super viewdidload];     [self updatelabels];     [self configuregetbutton];     [self loadsoundeffect]; }

also:

        lastgeocodingerror = error;         if (error == nil && [placemarks count] > 0) {             if (placemark == nil) {                 nslog(@"first time!");                 [self playsoundeffect];             }             placemark = [placemarks lastobject];         } else {             placemark = nil;         }

and finally:

#pragma mark - sound effect  - (void)loadsoundeffect {     nsstring *path  = [[nsbundle mainbundle] pathforresource:@"sound.caf" oftype:nil];      nsurl *fileurl = [nsurl fileurlwithpath:path isdirectory:no];     if (fileurl == nil) {         nslog(@"nsurl nil file file path: %@", path);         return;     }      osstatus error = audioservicescreatesystemsound((__bridge cfurlref)fileurl,&soundid);      if (error != kaudioservicesnoerror) {         nslog(@"error code %ld loading sound @ path: %@", error, path);         return;     } }  - (void)unloadsoundeffect {     audiosystemdisposesystemsoundid(soundid);     soundid = 0; }  - (void)playsoundeffect {     audioservicesplaysystemsound(soundid); }  @end

on lines when call audiosystem/services there yellow warning saying "implicit declaration of function '(what on line)' invalid in c99"

any appreciated! thanks!

change audioservicescreatesystemsound audioservicescreatesystemsoundid


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