我正在制作一个有很多动画和嵌套动画的应用程序。
self.countDownAnimationImage = [[UIImageView alloc]initWithImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"3" ofType:@"png"]]];
if([self.deviceType isEqualToString:@"iphone"])
{
self.countDownAnimationImage.frame = CGRectMake(120, 200, 80, 120);
}
else if([self.deviceType isEqualToString:@"iphone5"])
{
self.countDownAnimationImage.frame = CGRectMake(120, 288, 80, 120);
}
[self.view addSubview:self.countDownAnimationImage];
[UIView animateWithDuration:.8
delay:0
options:UIViewAnimationCurveEaseIn
animations:^{
self.countDownAnimationImage.transform = CGAffineTransformScale(self.countDownAnimationImage.transform, 1.5, 1.5);
}
completion:^(BOOL finished) {
[UIView animateWithDuration:.5
delay:0
options:UIViewAnimationCurveEaseIn
animations:^{
self.countDownAnimationImage.alpha = 0;
}
completion:^(BOOL finished)
{
self.countDownAnimationImage.alpha = 1;
self.countDownAnimationImage.image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"2" ofType:@"png"]];
self.countDownAnimationImage.transform = CGAffineTransformScale(self.countDownAnimationImage.transform, .66666667, .6666667);
[UIView animateWithDuration:.8
delay:0
options:UIViewAnimationCurveEaseIn
animations:^{
self.countDownAnimationImage.transform = CGAffineTransformScale(self.countDownAnimationImage.transform, 1.5, 1.5);
self.countDownAnimationImage.alpha = 1;
}
completion:^(BOOL finished) {
[UIView animateWithDuration:.5
delay:0
options:UIViewAnimationCurveEaseOut
animations:^{
self.countDownAnimationImage.alpha = 0;
}
completion:^(BOOL finished) {
self.countDownAnimationImage.alpha = 1;
self.countDownAnimationImage.image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"1" ofType:@"png"]];
self.countDownAnimationImage.transform = CGAffineTransformScale(self.countDownAnimationImage.transform, .66666667, .6666667);
[UIView animateWithDuration:.8
delay:0
options:UIViewAnimationCurveEaseIn
animations:^{
self.countDownAnimationImage.transform = CGAffineTransformScale(self.countDownAnimationImage.transform, 1.5, 1.5);
self.countDownAnimationImage.alpha = 1;
}
completion:^(BOOL finished) {
[UIView animateWithDuration:.5
delay:0
options:UIViewAnimationCurveEaseOut
animations:^{
self.countDownAnimationImage.alpha = 0;
}
completion:^(BOOL finished) {
[self.countDownAnimationImage removeFromSuperview];
}];
}];
}];
}];
}];
} ];
这是一个显示 3-2-1 的开始动画示例
我有更多动画，但都没有那么复杂。我注意到我的应用程序由于内存问题而在 ipad 上崩溃，并运行了仪器。
它没有显示任何泄漏，但分配堆大小不断增加。在进行了 heapshot 分析之后，我注意到大部分内存都被以下内容消耗了：
虚拟机：CoreAnimation
虚拟机：ImageIO_PNG_Data
我尝试查看堆栈跟踪，但无法弄清楚我到底在哪里生成了这个废弃的内存。
我正在使用的动画类型的另一个示例：
UIImageView *animationImage;
if([[UIScreen mainScreen]bounds].size.height == 568)
{
animationImage = [[UIImageView alloc]initWithFrame:CGRectMake(24, 250, 150, 80)];
}
else if([[UIScreen mainScreen]bounds].size.height == 480)
{
animationImage = [[UIImageView alloc]initWithFrame:CGRectMake(24, 200, 150, 80)];
}
else
{
animationImage = [[UIImageView alloc]initWithFrame:CGRectMake(184, 511, 218, 118)];
}
CGRect frame = animationImage.frame;
frame.size.height*=1.8;
frame.size.width*=1.8;
[animationImage setFrame:frame];
animationImage.image =[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:imageName ofType:@"png"]];
animationImage.alpha = 0;
[self.view addSubview:animationImage];
[UIView animateWithDuration:.5
delay:0
options:UIViewAnimationCurveEaseIn
animations:^{
animationImage.alpha=1;
[animationImage setFrame:frame];
}
completion:^(BOOL finished) {
[UIView animateWithDuration:1.5
delay:.6
options:UIViewAnimationCurveEaseOut
animations:^{
animationImage.alpha=0;
CGRect frame = animationImage.frame;
if([[UIScreen mainScreen]bounds].size.height > 568)
{
frame.origin.y-=210;
}
else
{
frame.origin.y-=90;
}
[animationImage setFrame:frame];
}
completion:^(BOOL finished) {
[animationImage removeFromSuperview];
}];
}];