我正在使用 iOS 5 SDK 开发一个 iOS 应用程序,启用了自动引用计数。但是我有一个正在大量创建的特定对象,必须在一秒钟后释放,否则设备会变得非常慢。看起来它们没有发布,因为设备非常慢。启用 ARC 时有没有办法手动释放对象?
编辑:我的代码,每秒调用 200 次以产生火花。它们在 0.8 秒后淡出,因此在那之后它们就没有用了。
int xanimationdiff = arc4random() % 30;
int yanimationdiff = arc4random() % 30;
if (arc4random()%2 == 0) {
xanimationdiff = xanimationdiff * -1;
}
if (arc4random()%2 == 0) {
yanimationdiff = yanimationdiff * -1;
}
Sparkle *newSparkle = [[Sparkle alloc] initWithFrame:CGRectMake(20 + arc4random() % 280, 20, 10, 10)];
//[newSparkle setTransform:CGAffineTransformMakeRotation(arc4random() * (M_PI * 360 / 180))]; //Rotatie instellen (was niet mooi, net sneeuw)
[self.view addSubview:newSparkle];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.8];
[newSparkle setFrame:CGRectMake(newSparkle.frame.origin.x - xanimationdiff, newSparkle.frame.origin.y - yanimationdiff, newSparkle.frame.size.width, newSparkle.frame.size.height)];
newSparkle.alpha = 0;
[UIView commitAnimations];
闪闪发光的目标代码:
#import "Sparkle.h"
@implementation Sparkle
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"sparkle.png"]]];
}
return self;
}
@end