如何将图像加载到iphone系统缓存中?

我尝试将以下代码添加到viewDidLoad方法中:

for (int i = 0; i < appDelegate.detailSectionsDelegateDict.count; i++) {
         NSString *imageString = [NSString stringWithFormat:@"%@",[[appDelegate.detailSectionsDelegateDict objectAtIndex:i] objectForKey:@"MainTrackImage"]];
        NSString *bundlePath = [[NSBundle mainBundle] bundlePath];
        UIImage* theImage;
        theImage = [UIImage imageNamed:imageString];
         [imageCacheArray insertObject:theImage atIndex:i];
}

然后在cellforrowatinexpath方法中从imageCacheArray中绘制正确的图像。但结果仍然是不稳定的滚动。

谢谢!