如果我使用以下代码,数据将为nil
dispatch_async(dispatch_get_global_queue(0,0), ^{
UIImage *img = [[UIImage alloc] init];
NSData * data = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString:@"http://www.manipalgrocer.com/image/catalog/BANNER/sweets.jpg"]];
img = [UIImage imageWithData: data];
dispatch_async(dispatch_get_main_queue(), ^{
menuCell.imgMenu.image = img;
});
});
但是,如果我使用以下代码,我将在menuCell中获取图像
dispatch_async(dispatch_get_global_queue(0,0), ^{
UIImage *img = [[UIImage alloc] init];
NSData * data = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString:@"https://www.fooodzapp.com/image/catalog/JUST%20CHILL/Justchill%20(1).png"]];
img = [UIImage imageWithData: data];
dispatch_async(dispatch_get_main_queue(), ^{
menuCell.imgMenu.image = img;
});
});
如果有人知道如何解决此问题,请回复。提前致谢