ios - Can't import AVFoundation.framework, so app can't play music? -


i new xcode, , trying make simple app playing noise upon button being clicked. asked previous quesiton in had error , user's suggested wasn't importing avfoundation.framework. took suggestion , set import statement, error. please see code below:

my .h file:

#import <uikit/uikit.h> @interface firstviewcontroller : uiviewcontroller @property (weak, nonatomic) iboutlet uilabel *sampletext; @end

my .m file:

#import "firstviewcontroller.h" #import <avfoundation/avaudioplayer.h> @interface firstviewcontroller () @end  @implementation firstviewcontroller @synthesize sampletext = _sampletext;  - (ibaction)beep:(uibutton *)sender {        nsurl* musicfile = [nsurl fileurlwithpath:[[nsbundle mainbundle]                                                    pathforresource:@"button1"                                                    oftype:@"mp3"]];         avaudioplayer *click = [[avaudioplayer alloc] initwithcontentsofurl:musicfile error:nil];         [click play];     //[click release]; }

however, upon building, linker error:

undefined symbols architecture armv7s:   "_objc_class_$_avaudioplayer", referenced from:       objc-class-ref in firstviewcontroller.o ld: symbol(s) not found architecture armv7s clang: error: linker command failed exit code 1 (use -v see invocation)

can please me resolve this? thanks!

you have add avfoundation framework project. click on project @ top of source list on left, select target, go summary pane, , click "+" button under "linked frameworks , libraries".


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