iPhone error:cannot find protocol declaration for MPMusicPlayerController

Question

Hi i have the following error in my code error:cannot find protocol declaration for MPMusicPlayerController and am completely stumped as to what it means.

Any insight into this is greatly appreciated.

Answer 1

1. Add mediaPlayer framework to your project

2 add #import to your class file

EDIT : This code compiled without errors (for OS 3.0)

#import "UntitledAppDelegate.h"
#import <MediaPlayer/MediaPlayer.h>

@implementation UntitledAppDelegate

@synthesize window;


- (void)applicationDidFinishLaunching:(UIApplication *)application {    

    MPMusicPlayerController *mc;
    [window makeKeyAndVisible];
}

@end

Answer 2

I had the same issue. Maybe you don't have the framework linked in the project?

Right-click your Target file on Groups & Files in XCode. On the window that opens there will be a list of Linked Libraries. Click + and add MediaPlayer.framework