私は成功し、ここで見つけたコードでインスピレーションを得ましたhttp://www.mycodestudio.com/blog/2011/01/10/coreanimation/ (そして、彼自身はhttp://www.mentalfaculty.com/からインスピレーションを得ました) mentalfaculty/Blog/Entries/2010/9/22_FLIPPIN_OUT_AT_NSVIEW.html )
とにかく、私がしていることは 2 つのビューの間を行き来します。
- (void)flip{
@synchronized(self){
if(!self.flipping){
self.flipping = YES;
UIView *bottomView = self.currentView == self.primaryView ? self.secondaryView : self.primaryView;
CALayer *top = self.currentView.layer;
CALayer *bot = bottomView.layer;
CAAnimation *topAnimation = [self flipAnimationWithDuration:self.speed/2.0 forLayerBeginningOnTop:YES scaleFactor:1];
CAAnimation *bottomAnimation = [self flipAnimationWithDuration:self.speed/2.0 forLayerBeginningOnTop:NO scaleFactor:1];
CGFloat zDistance = 1500.0f;
CATransform3D perspective = CATransform3DIdentity;
perspective.m34 = -1. / zDistance;
top.transform = perspective;
bot.transform = perspective;
topAnimation.delegate = self;
[CATransaction setCompletionBlock:^{
[top removeAllAnimations];
[self.currentView removeFromSuperview];
self.currentView = bottomView;
[self addSubview:bottomView];
[CATransaction setCompletionBlock:^{
self.flipping = NO;
[bot removeAllAnimations];
}];
[CATransaction begin];
[bot addAnimation:bottomAnimation forKey:@"flip"];
[CATransaction commit];
}];
[CATransaction begin];
[top addAnimation:topAnimation forKey:@"flip"];
[CATransaction commit];
}
}
}
-(CAAnimation *)flipAnimationWithDuration:(NSTimeInterval)aDuration forLayerBeginningOnTop:(BOOL)beginsOnTop scaleFactor:(CGFloat)scaleFactor
{
// Rotating halfway (pi radians) around the Y axis gives the appearance of flipping
CABasicAnimation *flipAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.y"];
CGFloat startValue = beginsOnTop ? 0.0f : M_PI/2;
CGFloat endValue = beginsOnTop ? -M_PI/2 : 0.0f;
flipAnimation.fromValue = [NSNumber numberWithDouble:startValue];
flipAnimation.toValue = [NSNumber numberWithDouble:endValue];
// Shrinking the view makes it seem to move away from us, for a more natural effect
// Can also grow the view to make it move out of the screen
CABasicAnimation *shrinkAnimation = nil;
if (scaleFactor != 1.0 ) {
shrinkAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
shrinkAnimation.toValue = [NSNumber numberWithFloat:scaleFactor];
// We only have to animate the shrink in one direction, then use autoreverse to "grow"
shrinkAnimation.duration = aDuration * 0.5;
shrinkAnimation.autoreverses = YES;
}
// Combine the flipping and shrinking into one smooth animation
CAAnimationGroup *animationGroup = [CAAnimationGroup animation];
animationGroup.animations = [NSArray arrayWithObjects:flipAnimation, shrinkAnimation, nil];
// As the edge gets closer to us, it appears to move faster. Simulate this in 2D with an easing function
animationGroup.timingFunction = [CAMediaTimingFunction functionWithName:beginsOnTop?kCAMediaTimingFunctionEaseIn:kCAMediaTimingFunctionEaseOut];
animationGroup.duration = aDuration;
// this really means keep the state of the object at whatever the anim ends at
// if you don't do this then it reverts back to the original state (e.g. brown layer)
animationGroup.fillMode = kCAFillModeForwards;
animationGroup.removedOnCompletion = NO;
return animationGroup;
}
2 つのビューの名前は primaryView と secondaryView です。任意のビュー (ImageView、テキスト ビューなど) を使用できます。