CAAnimation 레이어가 뷰의 프리뷰 변환을 취소합니다.

Question

간단한 변환 애니메이션을 UIIMageView에 사용하고 있습니다.

[UIView animateWithDuration:2 delay:0 options:UIViewAnimationOptionBeginFromCurrentState|UIViewAnimationOptionCurveEaseInOut animations:^{ 
     CGAffineTransform translate = CGAffineTransformMakeTranslation(0, -[self percentFromHeight:20]); 
     clueImage.transform = translate; 
    } completion:^(BOOL finished) { 
     [self.cluWordSelectionView setaWordsObjects:[NSArray arrayWithArray:[self.whiteCard clueWordObjectsForSoundAtIndex:self.index]]]; 

     [self addSubview:cluWordSelectionView]; 
     [clueImage.layer addAnimation:[Animations shakeAnimation] forKey:@"shake"]; 

    }]; 

당신은 완료 후 내가보기에 다른 흔들림 애니메이션 추가하고 볼 수 있듯이 :

[clueImage.layer addAnimation:[Animations shakeAnimation] forKey:@"shake"]; 

그 다음과 같습니다

+(CAAnimation*)shakeAnimation { 

CAKeyframeAnimation* animation = [CAKeyframeAnimation animationWithKeyPath:@"transform"]; 

CGFloat wobbleAngle = 0.06f; 

NSValue* valLeft = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(wobbleAngle, 0.0f, 0.0f, 1.0f)]; 
NSValue* valRight = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(-wobbleAngle, 0.0f, 0.0f, 1.0f)]; 
animation.values = [NSArray arrayWithObjects:valLeft, valRight, nil]; 
animation.beginTime = 3; 
animation.autoreverses = YES; 
animation.duration = 0.125; 
animation.repeatCount = HUGE_VALF; 

return animation; 

} 

문제는 그 때 shakeAnimation 뷰가 원래 위치로 "점프"시작합니다. 어떻게 방지 할 수 있습니까? 왜 이런 일이 일어나고 있습니까?

감사

샤니

Answer 1

새로운 애니메이션이 수행해야하는 전류 (번역) 계정으로 변환 :

layer

CATransform3D leftTransform = CATransform3DMakeRotation(wobbleAngle, 0.0f, 0.0f, 1.0f); 
    leftTransform = CATransform3DConcat(layer.transform, leftTransform); 
    CATransform3D rightTransform = CATransform3DMakeRotation(-wobbleAngle, 0.0f, 0.0f, 1.0f); 
    rightTransform = CATransform3DConcat(layer.transform, rightTransform); 

    NSValue* valLeft = [NSValue valueWithCATransform3D:leftTransform]; 
    NSValue* valRight = [NSValue valueWithCATransform3D:rightTransform]; 

애니메이션 될 계층이다.