UIImageView不显示问题

        dispatch_async(dispatch_get_main_queue(), ^{
            
            UIImage *image = [UIImage imageNamed:@"ic_sms.png"];
            self.TaskImageView.image = image;

            self.TaskImageView.hidden = NO;
        });
        

涉及到线程问题 uiimageview等组件的操作要放在主线程中

线程资料：

http://www.it165.net/pro/html/201406/16325.html

http://www.cnblogs.com/kenshincui/p/3983982.html