iphone - 一元表达式的无效参数类型“void”

Question

我正在编写 iOS 应用程序，但出现此错误：

一元表达式的参数类型“void”无效

这是代码：

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
  //code here
}

Answer 1

You got your method inside another method's body (maybe you've missed to type its closing } ?). That's why you get the error. Try to move it outside somewhere in your .m file.

Answer 2

检查函数上方的行。你有不平衡的parantheses吗？您是否声明了一些不完整的声明？