ios内存分配问题截图
我正在测试该项目： 我在截图时注意到内存分配的增长 当我评测该应用程序时，我看到很多内存将在CALayer renderInContext中分配。原因似乎是CGContextDrawImage。但如何解决这个问题呢 我将在此处粘贴必要的代码：ios内存分配问题截图,ios,animation,memory-management,screenshot,ibooks,Ios,Animation,Memory Management,Screenshot,Ibooks,我正在测试该项目： 我在截图时注意到内存分配的增长 当我评测该应用程序时，我看到很多内存将在CALayer renderInContext中分配。原因似乎是CGContextDrawImage。但如何解决这个问题呢 我将在此处粘贴必要的代码： @implementation iBookAnimationViewController - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
@implementation iBookAnimationViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
}
return self;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.view.layer.contents = (id)[UIImage imageNamed:@"Shelf_Contents@2x.png"].CGImage;
UITapGestureRecognizer *gesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(flip:)];
[self.view addGestureRecognizer:gesture];
[gesture release];
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark -
#pragma mark Gesture
- (void)flip:(UIGestureRecognizer*)gesture{
FlipSideViewController *controller = [[FlipSideViewController alloc] init];
controller.delegate = (id<FlipSideDelegate>)self;
[self presentModalViewController:controller animated:YES];
[controller release];
}
#pragma mark -
#pragma mark Animation Methods
- (CATransform3D)transformWithDegrees:(CGFloat)degrees{
if (degrees == 0) {
return CATransform3DIdentity;
}
return CATransform3DMakeRotation((M_PI/180)*degrees, 0.0f, 1.0f, 0.0);
}
- (UIImage*)contentsForView:(UIView*)aView{
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, YES, [[UIScreen mainScreen] scale]);
[aView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{
if (flag) {
[[anim valueForKey:@"ContentsLayer"] removeFromSuperlayer];
[[UIApplication sharedApplication] endIgnoringInteractionEvents];
}
}
- (void)animateFromViewController:(UIViewController*)fromController toViewController:(UIViewController*)toController{
UIImage *image = [self contentsForView:toController.view];
CALayer *contentsLayer = [CALayer layer];
contentsLayer.frame = toController.view.bounds;
contentsLayer.backgroundColor = [UIColor blackColor].CGColor;
[toController.view.layer addSublayer:contentsLayer];
CATransformLayer *transformLayer = [CATransformLayer layer];
transformLayer.frame = contentsLayer.bounds;
[contentsLayer addSublayer:transformLayer];
CALayer *backLayer = [CALayer layer];
backLayer.contents = (id)image.CGImage;
backLayer.doubleSided = NO;
backLayer.frame = transformLayer.bounds;
backLayer.zPosition = 0.0f;
backLayer.transform = [self transformWithDegrees:180.0f];
[transformLayer addSublayer:backLayer];
CALayer *frontLayer = [CALayer layer];
frontLayer.contents = (id)[self contentsForView:fromController.view].CGImage;
frontLayer.doubleSided = NO;
frontLayer.zPosition = FLIP_GAP;
frontLayer.frame = transformLayer.bounds;
frontLayer.masksToBounds = NO;
[transformLayer addSublayer:frontLayer];
CALayer *sideLayer = [CALayer layer];
sideLayer.contents = (id)[UIImage imageNamed:@"Wood Tile.png"].CGImage;
sideLayer.zPosition = FLIP_GAP/2;
sideLayer.frame = CGRectMake(transformLayer.bounds.origin.x-(FLIP_GAP/2), transformLayer.bounds.origin.y, FLIP_GAP, transformLayer.bounds.size.height);
sideLayer.transform = [self transformWithDegrees:90.0f];
[transformLayer addSublayer:sideLayer];
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"sublayerTransform"];
animation.toValue = [NSValue valueWithCATransform3D:[self transformWithDegrees:179.9f]];
animation.duration = ANIMATION_DURATION;
animation.fillMode = kCAFillModeForwards;
animation.removedOnCompletion = NO;
animation.delegate = self;
[animation setValue:contentsLayer forKey:@"ContentsLayer"];
[transformLayer addAnimation:animation forKey:@"FlipAnimation"];
[[UIApplication sharedApplication] beginIgnoringInteractionEvents];
}
#pragma mark -
#pragma mark Modal Prentation Methods
- (void)dismissModalViewControllerAnimated:(BOOL)animated{
UIViewController *modalViewController = self.modalViewController;
[self animateFromViewController:modalViewController toViewController:self];
[super dismissModalViewControllerAnimated:NO];
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque animated:YES];
}
- (void)presentModalViewController:(UIViewController *)modalViewController animated:(BOOL)animated{
[super presentModalViewController:modalViewController animated:NO];
[self animateFromViewController:self toViewController:modalViewController];
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault animated:YES];
}
#pragma mark -
#pragma mark FlipSideDelegate
- (void)dismissFlipSideViewController:(FlipSideViewController*)controller{
[self dismissModalViewControllerAnimated:YES];
}
#pragma mark -
#pragma mark Memory Management
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidUnload {
}
- (void)dealloc {
[super dealloc];
}
@end
@implementation iBookAnimationViewController
-（id）initWithNibName:（NSString*）nibNameOrNil bundle:（NSBundle*）nibBundleOrNil{
self=[super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]；
如果（自我）{
}
回归自我；
}
-（无效）viewDidLoad{
[超级视图下载]；
self.view.layer.contents=（id）[UIImage ImageName:@“Shelf”_Contents@2x.png“].CGImage；
UITapGestureRecognizer*手势=[[UITapGestureRecognizer alloc]initWithTarget:自我操作：@selector（翻转：）]；
[self.view addgestureRecognitor:signature]；
[手势释放]；
[[UIApplication sharedApplication]setStatusBarStyle:UIStatusBarStyleBlackObaque]；
}
-（布尔）应自动旋转指针面定向：（UIInterfaceOrientation）interfaceOrientation{
返回（interfaceOrientation==UIInterfaceOrientationGraphic）；
}
#布拉格标记-
#布拉格标记手势
-（无效）翻转：（UIgestureRecognitor*）手势{
FlipSideViewController*控制器=[[FlipSideViewController alloc]init]；
controller.delegate=（id）self；
[self-presentModalViewController:控制器已设置动画：是]；
[控制器释放]；
}
#布拉格标记-
#pragma标记动画方法
-（CATTransformorM3D）带度数的变换：（CGFloat）度数{
如果（度==0）{
返回CATTransferM3DidEntity；
}
返回CATTransformerM3dMake旋转（（M_PI/180）*度，0.0f，1.0f，0.0）；
}
-（UIImage*）内容查看：（UIView*）查看{
UIGraphicsBeginImageContextWithOptions（self.view.bounds.size，是，[[UIScreen mainScreen]缩放]）；
[aView.layer renderContext:UIGraphicsGetCurrentContext（）]；
UIImage*image=UIGraphicsGetImageFromCurrentImageContext（）；
UIGraphicsSendImageContext（）；
返回图像；
}
-（void）animationDidStop:（CAAnimation*）anim finished:（BOOL）标志{
国际单项体育联合会（旗）{
[[anim valueForKey:@“ContentsLayer”]removeFromSuperlayer]；
[[UIApplication sharedApplication]endIgnoringInteractionEvents]；
}
}
-（void）animateFromViewController:（UIViewController*）从控制器到ViewController:（UIViewController*）到控制器{
UIImage*image=[self-contentsForView:toController.view]；
CALayer*contentsLayer=[CALayer层]；
contentsLayer.frame=toController.view.bounds；
contentsLayer.backgroundColor=[UIColor blackColor].CGColor；
[toController.view.layer addSublayer:contentsLayer]；
CATTransformLayer*transformLayer=[CATTransformLayer层]；
transformLayer.frame=contentsLayer.bounds；
[contentsLayer addSublayer:transformLayer]；
CALayer*backLayer=[CALayer layer]；
backLayer.contents=（id）image.CGImage；
backLayer.doubleside=否；
backLayer.frame=transformLayer.bounds；
backLayer.zPosition=0.0f；
backLayer.transform=[self transformWithDegrees:180.0f]；
[转换层添加子层：背层]；
CALayer*frontLayer=[CALayer layer]；
frontLayer.contents=（id）[self-contentsForView:fromController.view].CGImage；
frontLayer.doubleside=否；
frontLayer.zPosition=翻转间隙；
frontLayer.frame=transformLayer.bounds；
frontLayer.masksToBounds=否；
[转换层添加子层：前层]；
CALayer*侧层=[CALayer层]；
sideLayer.contents=（id）[UIImage ImageName:@“Wood Tile.png”].CGImage；
sideLayer.zPosition=翻转间隙/2；
sideLayer.frame=CGRectMake（transformLayer.bounds.origin.x-（翻转间隙/2），transformLayer.bounds.origin.y，翻转间隙，transformLayer.bounds.size.height）；
sideLayer.transform=[self transformWithDegrees:90.0f]；
[转换层添加子层：侧层]；
CABasicAnimation*动画=[CABasicAnimation animationWithKeyPath:@“子层转换”]；
animation.toValue=[NSValue ValueWithCatTransformM3D:[self-transformWithDegrees:179.9f]]；
animation.duration=动画\持续时间；
animation.fillMode=kCAFillModeForwards；
animation.removedOnCompletion=否；
animation.delegate=self；
[动画设置值：contentsLayer-forKey:@“contentsLayer”]；
[transformLayer addAnimation:animation forKey:@“FlipAnimation”]；
[[UIApplication sharedApplication]beginIgnoringInteractionEvents]；
}
#布拉格标记-
#pragma-mark模态预测方法
-（void）dismissModalViewControllerAnimated:（BOOL）动画{
UIViewController*modalViewController=self.modalViewController；
[self-animateFromViewController:modalViewController到ViewController:self]；
[super dismissModalViewControllerAnimated:否]；
[[UIApplication sharedApplication]setStatusBarStyle:UIStatusBarStyleBlack:YES]；
}
-（void）presentModalViewController:（UIViewController*）已设置动画的modalViewController:（BOOL）已设置动画{
[超级呈现modalViewController:modalViewController动画：否]；
[self-animateFromViewController:self-toViewController:modalViewController]；
[[UIApplication sharedApplication]setStatusBarStyle:UIStatusBarStyleDefault动画：是]；
}
#布拉格标记-
#pragma标记FlipSideDelegate
-（无效）解除FlipSideViewController:（FlipSideViewController*）控制器{
[自我解散Modalviewcontrolleranimated:是]；
}
#布拉格标记-
#pragma标记内存管理
-（无效）未收到记忆警告{
[超级记忆警告]；
}
-（无效）视图卸载{
}
-（无效）解除锁定{
[super dealoc]；
}
@结束