的drawRect和AFNetworking

Question

我用下面的代码

 self.imageView = [[UIImageView alloc] init]; 
    [self.imageView setImageWithURL:[NSURL URLWithString:url] placeholderImage:[UIImage imageNamed:@"profile-image-placeholder"]]; 
    [self setNeedsLayout]; 
    [self setNeedsDisplay]; 

但在drawRect中无法看到的图像只是占位符使用在这以下

[self.imageView.image drawAtPoint:CGPointMake(15.0f, 5.0f)]; 

什么想法？

Answer 1

我认为你所需要做的就是这一点。如果单元格被重用，AFNetworking将取消图像操作，因此您不必担心该边缘情况。

[self.imageView setImageWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]] placeholderImage:[UIImage imageNamed:@"profile-image-placeholder"] success:^(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image) { 
     self.imageview.image=image; 
     [self setNeedsLayout]; 
     [self setNeedsDisplay]; 

    } failure:nil];