你好,我有产品表和产品详细信息视图为每个产品我有很多图像,下载和缓存在磁盘和内存,每次用户选择一个产品,以检查其细节我正在检索缓存的图像,并设置为我的四UI
ImageView在UITableViewController中的自定义单元格内,我无法设置图像,尽管我可以通过NSLog()函数记录它我正在使用此代码：
int index = 0;
int indexOfImages = 1;
self.imageCache = [[SDImageCache alloc] initWithNamespace:@"menuImage"];
for ( UIImageView *currentImageView in cell.contentView.subviews)
{
NSLog(@"the imageindex is: %d",indexOfImages);
NSLog(@"the index is: %d",index);
NSLog(@"the count is: %lu",(unsigned long)[self.currentProduct.mirsaProductUrlImage count]);
if (index < [self.currentProduct.mirsaProductUrlImage count] ) {
[self.imageCache queryDiskCacheForKey:self.currentProduct.mirsaProductUrlImage[indexOfImages]
done:^(UIImage *image,SDImageCacheType cacheType) {
if (image) {
currentImageView.image = image;
}
}];
indexOfImages++;
index++;
}
else
{
break;
}
}
and if i try to change the loop way to this
for ( UIImageView *currentImageView in self.tableView.subViews)
i got this error UITableViewWrapperView setImage:]: unrecognized selector sent to instance
我只是想知道我是否以错误的方式循环,我的意思是我无法通过这个循环达到他们或发生了什么？
解决方法
你必须改变循环：
for ( UIView *currentView in cell.contentView.subviews)
{
if([currentView isKindOfClass:[UIImageView class]])
{
// here Do All the stuff for imageViews
}
}
做所有这些东西在cellForRowAtIndexPath
并改变imageView图像采取的弱视频imageView这样的例子：
__weak UIImageView *weakImage = currentImageView;
[self.imageCache queryDiskCacheForKey:self.currentProduct.mirsaProductUrlImage[indexOfImages]
done:^(UIImage *image,SDImageCacheType cacheType) {
if (image) {
weakImage.image = image;
}
}];
