UIView - NSURLConnection 不调用委托
我正在使用 Objective-C 类 (UIView)。在该类中，我调用 NSURLConnection （将 NSURLConnectionDelegate 添加到 .h）当我启动连接时，没有任何反应。它没有调用它的方法。是否无法在 UIView 类中调用 NSURLConnection 或者我做错了什么？
谢谢。
I'm using an Objective-C class (UIView). In that class I'm calling an NSURLConnection (added NSURLConnectionDelegate to .h) When I start the connection, nothing happens. It's not calling its methods. Is it just not possible to call NSURLConnection in a UIView class or am I doing something wrong?
Thanks.
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首先，仅将
NSURLConnection的委托。其次，
UIView绝对是一个错误的候选NSURLConnection委托，因为：UIView是 MVC 的视图部分；UIViewController中。这使得 UIViewController 成为
NSURLConnection委托的更好选择。First of all, it's not enough to add
<NSURLConnectionDelegate>to your object's interface declaration, you should explicitly set it as theNSURLConnection's delegate.Secondly,
UIViewis definitely a wrong candidate as anNSURLConnectiondelegate, because:UIViewis the view part of MVC;UIViewController.That makes
UIViewControllera better choice as anNSURLConnectiondelegate.您应该在 UIViewController 中执行此操作。看看苹果的文档：
因此 UIView 不是执行与服务器交互之类的操作的正确位置。
You should do this in your UIViewController. Take a look at Apples documentation:
So UIView is not the correct place to do stuff like interaction with a server.