Ich arbeite gerade an einem iPhone-Spiel und muss einige Animationen im laufenden Betrieb erstellen. Die Animation basiert auf mehreren Bildern, und da der Bereich der Bildkombinationen zu groß ist und es unmöglich ist, alle Sequenzen vorab zu erstellen, würde ich gerne jedes Mal, wenn sich die Situation ändert, eine Reihe von Bildern neu berechnen können.Speicherlecks in der Bild-Erstellungsfunktion
Die Funktion erstellt eine Reihe von Bildern, die als Animationssequenz verwendet werden. Ich muss mit zwei Dinge helfen:
- Es gibt mehrere große Speicherlecks sind, dass ich Schwierigkeiten habe zu finden - ich brauche Hilfe sie
- Ortung Da ich auf das iPhone neu bin, was ich wissen will, ob es ist ein besserer Weg, es zu tun, wenn Sie einen besseren Vorschlag haben, wie es zu schreiben, bitte teilen ...
Code:
(void) updateImages:(int) smallPicID
{
CGRect smallPicRect;
smallPicRect.size = CGSizeMake(25.0f, 25.0f);
//TODO: add smallPic location for every image. Currently the values only match the first image...
static const CGPoint smallPicLocation[11][SMALLPIC_LOCATION_COUNT] =
{
{ {126.0f, 153.0f},{105.0f, 176.0f}, {115.0f, 205.0f}, {145.0f, 211.0f}, {166.0f, 188.0f}, {156.0f, 159.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} },
{ {183.0f, 91.0f}, {201.0f, 97.0f}, {205.0f, 115.0f}, {191.0f, 127.0f}, {173.0f, 122.0f}, {169.0f, 124.0f} }
};
for(int i = 0; i < self.m_finalImages.count; ++i)
{
// start with base image
UIImage * baseImg = [self.m_finalImagesEmpty objectAtIndex:i];
CGImageRef baseImgCtx = baseImg.CGImage;
// Create the bitmap context that matches the baseImg parameters
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGContextRef newImgCtx = CGBitmapContextCreate(NULL,
CGImageGetWidth(baseImgCtx),
CGImageGetHeight(baseImgCtx),
8, 0, colorSpace,
(kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst));
CGColorSpaceRelease(colorSpace);
if (newImgCtx == NULL)
{
// error creating context
assert(0);
return;
}
// Get empty drum image width, height.
size_t w = CGImageGetWidth(baseImgCtx);
size_t h = CGImageGetHeight(baseImgCtx);
CGRect rect = {{0,0},{w,h}};
// Draw the image to the bitmap context.
// newImgCtx now contains the full empty drum image.
CGContextDrawImage(newImgCtx, rect, baseImgCtx);
CGContextSaveGState(newImgCtx);
// translate & scale because of origin difference between UIKit and CG
CGContextTranslateCTM(newImgCtx, 0, h);
CGContextScaleCTM(newImgCtx, 1, -1);
int startLocation = 0;
int endLocation = SMALLPIC_LOCATION_COUNT;
// for each location
for(int j = startLocation; j < endLocation; j++)
{
// if its empty, nothing to do, move to next bullet
if (m_locationStatus[j] == CY_EMPTY)
continue;
UIImage * srcImg;
switch (m_locationStatus[j])
{
case CY_FULL: srcImg = [self.m_finalImagesLoaded objectAtIndex:i]; break;
case CY_USED: srcImg = [self.m_finalImagesSpent objectAtIndex:i]; break;
}
// create small image containing only the smallpic from the src img
smallPicRect.origin = smallPicLocation[i][j];
CGImageRef smallpicCGImg = CGImageCreateWithImageInRect(srcImg.CGImage, smallPicRect);
// draw the smallpic into the new context
CGContextDrawImage(newImgCtx, smallPicRect, smallpicCGImg);
CGImageRelease(smallpicCGImg);
}
CGContextRestoreGState(newImgCtx);
// update the image from the context
UIImage *baseImg = [self.m_finalImages objectAtIndex:i];
CGImageRef imgref = CGBitmapContextCreateImage(newImgCtx);
//[baseImg release];
[baseImg initWithCGImage:imgref];
CGContextRelease(newImgCtx);
}
}
Hier ist ein verwandter Thread auf Apples Website: http://discussions.apple.com/thread.jspa?threadID=1664673 – Demi