我有一个 UIScrollView，我正在加载一些图像。有时我会对图像应用效果，并且需要一些时间来进行预加载，所以我决定使用 detachNewThreadSelector 在不同的线程上执行此操作。为此，我正在使用 gitHub 上的 KTPhotoBrowser。
所以基本上，我有这样的功能。
- (void)setCurrentIndex:(NSNumber *)newIndex
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
currentIndex_ = [newIndex integerValue];
[self loadPhoto:currentIndex_];
[self loadPhoto:currentIndex_ + 1];
[self loadPhoto:currentIndex_ - 1];
[self unloadPhoto:currentIndex_ + 2];
[self unloadPhoto:currentIndex_ - 2];
[self setTitleWithCurrentPhotoIndex];
[self toggleNavButtons];
[pool release];
}
我称之为使用
[NSThread detachNewThreadSelector:@selector(setCurrentIndex:) toTarget:self withObject:[NSNumber numberWithInt:5]];
当我运行它时，它似乎正在泄漏。我开始怀疑是否应该在 loadPhoto 方法中的代码周围放置 AutoRelease 池。如果您对此代码感到好奇，我已将其包含在下面。
- (void)loadPhoto:(NSInteger)index
{
if (index < 0 || index >= photoCount_) {
return;
}
id currentPhotoView = [photoViews_ objectAtIndex:index];
if (NO == [currentPhotoView isKindOfClass:[KTPhotoView class]]) {
// Load the photo view.
CGRect frame = [self frameForPageAtIndex:index];
KTPhotoView *photoView = [[KTPhotoView alloc] initWithFrame:frame];
[photoView setScroller:self];
[photoView setIndex:index];
[photoView setBackgroundColor:[UIColor clearColor]];
// Set the photo image.
if (dataSource_) {
if ([dataSource_ respondsToSelector:@selector(imageAtIndex:photoView:)] == NO) {
UIImage *image = [dataSource_ imageAtIndex:index];
[photoView setImage:image];
} else {
[dataSource_ imageAtIndex:index photoView:photoView];
}
}
[scrollView_ addSubview:photoView];
[photoViews_ replaceObjectAtIndex:index withObject:photoView];
[photoView release];
} else {
// Turn off zooming.
[currentPhotoView turnOffZoom];
}
}
任何想法将不胜感激。