Integrating cocos2d in an existing app - OR - where does the white rectangle come from?

I have created a "normal" app - initially without cocos2d. Now I need cocos2d in this app. So I added all the frameworks that are included when creating a cocos2d app and just copied the cocos2d group from another project by dragging it to my project.

For the init for cocos2d I get the application's window in an ivar of the ViewController which runs the init.

@interface MyViewController : UIViewController <UINavigationControllerDelegate> {
    UIWindow *window;

}
@property (nonatomic, retain) IBOutlet UIWindow *window;


- (void) setupMyVC;

@end

@implementation MyViewController

@synthesize window;

-(void) viewDidLoad {
    [self setupMyVC];
}

- (void) setupMyVC
{
    //get the mainWindow for the CC_DIRECTOR_INIT() 
    MyAppDelegate *mainDelegate = (MyAppDelegate *)[[UIApplication sharedApplication]delegate];
    self.window = mainDelegate.mainWindow;




    // CC_DIRECTOR_INIT()
    //
    // 1. Initializes an EAGLView with 0-bit depth format, and RGB565 render buffer
    // 2. EAGLView multiple touches: d开发者_如何学Pythonisabled
    // 3. creates a UIWindow, and assign it to the "window" var (it must already be declared)
    // 4. Parents EAGLView to the newly created window
    // 5. Creates Display Link Director
    // 5a. If it fails, it will use an NSTimer director
    // 6. It will try to run at 60 FPS
    // 7. Display FPS: NO
    // 8. Device orientation: Portrait
    // 9. Connects the director to the EAGLView
    //
    CC_DIRECTOR_INIT();

    // Obtain the shared director in order to...
    CCDirector *director = [CCDirector sharedDirector];

    // Sets landscape mode
    [director setDeviceOrientation:kCCDeviceOrientationLandscapeLeft];

    // Turn on display FPS
    [director setDisplayFPS:YES];

    // Turn on multiple touches
    EAGLView *view = [director openGLView];
    [view setMultipleTouchEnabled:YES];

    // Default texture format for PNG/BMP/TIFF/JPEG/GIF images
    // It can be RGBA8888, RGBA4444, RGB5_A1, RGB565
    // You can change anytime.
    [CCTexture2D setDefaultAlphaPixelFormat:kTexture2DPixelFormat_RGBA8888];    


    [[CCDirector sharedDirector] runWithScene: [RecScene scene]];
}


@end

The code works - EXCEPT THAT I GET A WHITE RECTANGLE in the lower left corner (about 5 x 20 large). This rectangle is on top of every sprite I add.

Is that OK, just to drag the cocos2d Group into my app + adding the required frameworks to integrate cocos2d?

Is there something missing?

Or where does the rectangle come from?

Tanks so much for your help!

This could indicate that you forgot to add the file fps_images.png to your project's resources. In the lower left corner cocos2d displays the current framerate if enabled. Since you have it enabled with

[director setDisplayFPS:YES];

I strongly assume that this is your problem. Either turn of the FPS display or add the fps_images.png to your project's resources.