与NSLog一起使用的"toString()"的Objective-C等效项是什么? [英] What is the Objective-C equivalent for "toString()", for use with NSLog?

问题描述

有没有可以在自定义类中覆盖的方法，以便何时

Is there a method that I can override in my custom classes so that when

      NSLog(@"%@", myObject) 

被称为，它将打印对象的字段(或我认为重要的任何字段)?我想我在寻找与Java toString()等效的Objective-C.

is called, it will print the fields (or whatever I deem important) of my object? I guess I'm looking for the Objective-C equivalent of Java's toString().

推荐答案

它是description实例方法，声明为:

It is the description instance method, declared as:

- (NSString *)description

这是一个示例实现(感谢grahamparks):

Here's an example implementation (thanks to grahamparks):

- (NSString *)description {
   return [NSString stringWithFormat: @"Photo: Name=%@ Author=%@", name, author];
}

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