Getting errors with linking QuartzCore

I am new with Objective C and iPhone development but that is what I am trying to do... Problem is with QuartzCore and basic animation stuff. These lines are from my applicationDelegate:

#import "QuartzCore/QuartzCore.h"
...
-(void)performTransition {

        if(!transitioning) {

            CATransition *transition = [CATransition animation];
            transition.duration = 0.9;
            transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
            transition.type = kCATransitionMoveIn;
            transition.subtype = (isInMainDialog) ? kCATransitionFromRight : kCATransitionFromLeft;

            transitioning = YES;
            transition.delegate = self;
        [window.layer addAnimation:tr开发者_开发知识库ansition forKey:nil];

            if (isInMainDialog) {
                mainController.view.hidden = YES;
                levelController.view.hidden = NO;
                isInMainDialog = false;

                // start game
                [levelController playLevel:1 balls:3 scores:0];
            }
            else {
                mainController.view.hidden = NO;
                levelController.view.hidden = YES;
                isInMainDialog = true;
            }
        }
    }

okay.. This applicationDelegate compiles ok, but when building following errors happen:

"_kCATransitionFromRight", referenced from: _kCATransitionFromRight$non_lazy_ptr in eBreakAppDelegate.o

"_kCAMediaTimingFunctionEaseInEaseOut", referenced from: _kCAMediaTimingFunctionEaseInEaseOut$non_lazy_ptr in eBreakAppDelegate.o

"_kCATransitionMoveIn", referenced from: _kCATransitionMoveIn$non_lazy_ptr in eBreakAppDelegate.o

".objc_class_name_CAMediaTimingFunction", referenced from: literal-pointer@__OBJC@__cls_refs@CAMediaTimingFunction in eBreakAppDelegate.o

"_kCATransitionFromLeft", referenced from: _kCATransitionFromLeft$non_lazy_ptr in eBreakAppDelegate.o

".objc_class_name_CATransition", referenced from: literal-pointer@__OBJC@__cls_refs@CATransition in eBreakAppDelegate.o

ld: symbol(s) not found

collect2: ld returned 1 exit status

So, I guess there is a problem in linking, because there is no problems at compile time. Should I, some how, link the quartz to my project or how could this be fixed?

---

you have to add QuartzCore.framework to your target:

• right click on application target;
• click on [Get Info] in contextual menu;
• in [General] tab there's gonna be two lists, one for dependencies, other for Linked libraries;
• add QuartzCore framework to the botom one.

---

You need to make sure that QuartzCore is added to your project then change this line:

#import "QuartzCore/QuartzCore.h"

to:

#import <QuartzCore/QuartzCore.h>

The quotations tell the linker to look in the project source files. The '< >' tell it to look for frameworks.