pengyingh

摘要： origion：http://www.alterplay.com/ios-dev-tips/2009/10/asynchronous-uiimage.htmlEverybody needed or will need to load images from web. The easiest way to do it is to get NSData from NSURL and create UIImage:UIImage *myImage = [[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:[NSURL URLWithS 阅读全文

摘要： A good example for using allocWithZone: is when you are implementing the NSCopy protocol, which allows you make your custom objects copyable (deep copy / copy by value) like: ClassName *newObject = [currentObject copy]; //results in newObject being a copy of currentObject not just a reference to itT 阅读全文