在我的代码中我有CGMutablePathRef thePath = CGPathCreateMutable（）;如果我不释放它，我实际上会得到成千上万的泄漏，因为我不断地采取行动。但是，如果我发布它，我的游戏最终会崩溃。有任何想法吗？我有可能在错误的地方发布它吗？
-(void)MoveObject:(int)Tag
{
representationX = gameViewObj.spaceshipImageView.center.x;
representationY = gameViewObj.spaceshipImageView.center.y;
CALayer *spaceshipLayer = gameViewObj.spaceshipImageView.layer;
shipAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
CGMutablePathRef thePath = CGPathCreateMutable();
CGPathMoveToPoint(thePath, NULL, representationX, representationY);
statusFire = YES;
BOOL parsedF = NO;
代码的其余部分如下：
-(void)MoveObject:(int)Tag
{
representationX = gameViewObj.spaceshipImageView.center.x;
representationY = gameViewObj.spaceshipImageView.center.y;
CALayer *spaceshipLayer = gameViewObj.spaceshipImageView.layer;
shipAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
CGMutablePathRef thePath = CGPathCreateMutable();
CGPathMoveToPoint(thePath, NULL, representationX, representationY);
statusFire = YES;
BOOL parsedF = NO;
if(Tag==LeftButtonTag)
{
gameViewObj.spaceshipImageView.transform = CGAffineTransformMakeRotation(M_PI + M_PI_2);
previousButtonTag = LeftButtonTag;
representationX--;
CGPathAddLineToPoint(thePath, NULL,representationX, representationY);
parsedF = YES;
}
else if(Tag==UpButtonTag)
{
gameViewObj.spaceshipImageView.transform = CGAffineTransformMakeRotation(0);
previousButtonTag = UpButtonTag;
representationY--;
CGPathAddLineToPoint(thePath, NULL,representationX, representationY);
parsedF = YES;
}
else if(Tag==RightButtonTag)
{
gameViewObj.spaceshipImageView.transform = CGAffineTransformMakeRotation(M_PI/2);
previousButtonTag = RightButtonTag;
representationX++;
CGPathAddLineToPoint(thePath, NULL,representationX, representationY);
parsedF = YES;
}
else if(Tag==DownButtonTag)
{
gameViewObj.spaceshipImageView.transform = CGAffineTransformMakeRotation(M_PI);
previousButtonTag = DownButtonTag;
representationY++;
CGPathAddLineToPoint(thePath, NULL,representationX, representationY);
parsedF = YES;
}
if(parsedF){
shipAnimation.path = thePath;
shipAnimation.delegate = self;
shipAnimation.duration = 0.003;
[spaceshipLayer addAnimation:shipAnimation forKey:@"position"];
//To kill spaceship when moved backwards.
if(playField[representationX][representationY]==3){
[self doDie];
}
if(playField[representationX][representationY] == 2){
if(onSecretLine){
[gameViewObj.spaceshipImageView setCenter:CGPointMake(representationX, representationY)];
oldPositionX = representationX;
oldPositionY = representationY;
}
}
// case: breaking out
if (playField[representationX][representationY]==0){
if (onSecretLine){
if (statusFire)
{
availableOffline = YES;
oldPositionX=gameViewObj.spaceshipImageView.center.x;
oldPositionY=gameViewObj.spaceshipImageView.center.y;
[gameViewObj DrawLine];
onSecretLine = NO;
availableOffline = NO;
}
}
}
if (playField[representationX][representationY]==0)
if (!onSecretLine)
{
BOOL doIt=true;
// ------------------------------
// prevent contact own line
// ------------------------------
// left
if (Tag==LeftButtonTag) {
if (playField[representationX-1][representationY]==3) {
[self doDie];
doIt=false;
}
}
// right
if (Tag==RightButtonTag) {
if (playField[representationX+1][representationY]==3) {
[self doDie];
doIt=false;
}
}
// up
if (Tag==UpButtonTag) {
if (playField[representationX][representationY-1]==3) {
[self doDie];
doIt=false;
}
}
// down
if (Tag==DownButtonTag) {
if (playField[representationX][representationY+1]==3) {
[self doDie];
doIt=false;
}
}
// special things ...
if (doIt)
{
playField[representationX][representationY]=3;
[gameViewObj DrawLine];
}
}
// case: back to the secure line
if (playField[representationX][representationY]==2)
if (!onSecretLine)
{
[gameViewObj.spaceshipImageView setCenter:CGPointMake(representationX, representationY)];
availableOffline = NO;
onSecretLine = YES;
[[NSNotificationCenter defaultCenter] postNotificationName:@"FindBirdCenter" object:nil];
for (int i=0; i<[gameViewObj.birdImageViewArray count]; i++) {
UIImageView* ImgBird=[gameViewObj.birdImageViewArray objectAtIndex:i];
int px=ImgBird.center.x;
int py=ImgBird.center.y;
// cristall point
playField[px][py]=5;
}
[self fillPlaygroundExtended];
//Elan function for filling area enclosed
[self fillAreaEnclosed:gameViewObj._myContext];
// invert ..
[self invertPlayground];
// turn the 3 into -> 20+
[self generateNewSecureLine];
}
if(Tag == UpButtonTag){
[self moveShipUp];
}
else if(Tag == RightButtonTag){
[self moveShipRight];
}
else if(Tag == DownButtonTag){
[self moveShipDown];
}
else if(Tag == LeftButtonTag){
[self moveShipLeft];
}
if(doScore == YES){
[self calculateScore];
doScore = NO;
}
[gameViewObj setNeedsDisplay];
}
}
答案 0 :(得分：9)
您应该在行
之后的路径上执行CGPathRelease（）shipAnimation.path = thePath;
以及
的else语句if(parsedF){
条件（否则如果parsedF为NO，它仍然会泄漏。
答案 1 :(得分：5)
您永远不会发布thePath。至少不在那段代码中。
Core Graphics使用核心基础内存规则，您可以在Memory Management Programming Guide for Core Foundation
阅读简而言之：任何名称中包含Create的函数都将返回一个保留的对象，您需要使用其中Release的名称来释放该对象。如果CGPathRef有CGPathRelease。