我正在尝试使用 Core Animation 为使用 Texture Packer 制作的精灵表制作动画。
我有一个包含所有精灵内容的 NSCollection。（键和 CGImageRef 的）
My Collection {
"caja01.png" = "<UIImage: 0x1cda57c0>";
"caja02.png" = "<UIImage: 0x1cda61d0>";
"caja03.png" = "<UIImage: 0x1cda62e0>";
"caja04.png" = "<UIImage: 0x1cda63f0>";
"caja05.png" = "<UIImage: 0x1cda6540>";
"caja06.png" = "<UIImage: 0x1cda6650>";
"caja07.png" = "<UIImage: 0x1cda6760>";
"caja08.png" = "<UIImage: 0x1cda68f0>";
}
我尝试使用 CAKeyframeAnimation 制作动画：
NSArray *values = [self.mySprites allValues]; // Get the CGImageRef's from NSDictionary
// Creating a new layer
CALayer *sublayer = [CALayer layer];
sublayer.backgroundColor = [UIColor blueColor].CGColor;
sublayer.frame = imagen.frame;
[self.view.layer addSublayer:sublayer];
// Create an first image from Sprite-sheet
UIImageView *imagen = [[UIImageView alloc]initWithImage:[self.mySprites objectForKey:@"caja01.png"]];
// And add initial content to my layer
sublayer.contents = (id) imagen.image.CGImage;
// Try to make the animation
CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath: @"contents"];
animation.calculationMode = kCAAnimationDiscrete;
animation.duration = 10.0;
[animation setValues:values];
[animation setRepeatCount:2];
[animation setRemovedOnCompletion:NO];
[sublayer addAnimation: animation forKey: @"contents"];
但它不起作用，屏幕上没有任何反应。有什么建议么？谢谢！