本文介绍了使用核心动画对图像进行排序,接收内存警告的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我收到使用100个动画图像的内存警告,所以我尝试使用核心动画,但这给了我相同的问题。这是因为我不知道如何在当前代码中使用replaceSublayer
UIView* upwardView=[[UIView alloc]init];
[upwardView setFrame:CGRectMake(0, 0, 1024, 768)];
[self.view addSubview:upwardView];
NSArray *animationImages=[NSArray arrayWithObjects:[UIImage imageNamed:@"001.png"],[UIImage imageNamed:@"001.png"],[UIImage imageNamed:@"002.png"],[UIImage imageNamed:@"003.png"],....,nil];
CAKeyframeAnimation *animationSequence = [CAKeyframeAnimation animationWithKeyPath: @"contents"];
animationSequence.calculationMode = kCAAnimationLinear;
animationSequence.autoreverses = YES;
animationSequence.duration = 5.00;
animationSequence.repeatCount = HUGE_VALF;
NSMutableArray *animationSequenceArray = [[NSMutableArray alloc] init];
for (UIImage *image in animationImages)
{
[animationSequenceArray addObject:(id)image.CGImage];
}
CALayer *layer = [upwardView layer];
animationSequence.values = animationSequenceArray;
[layer addAnimation:animationSequence forKey:@"contents"];
推荐答案
我想您还需要再添加几行。只需替换最后三行并添加以下行。
//Prepare CALayer
CALayer *layer = [CALayer layer];
layer.frame = self.view.frame;
layer.masksToBounds = YES;
[layer addAnimation:animationSequence forKey:@"contents"];
[upwardView.layer addSublayer:layer]; // Add CALayer to your desired view
有关实现的详细信息,请查看reference
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