使用自定义对象排序数组 [英] Sort array with custom objects

问题描述

我正在尝试对一个数组进行排序，这个数组充满了我编写的类中的对象。我编写的类包含一个NSString本身，作为名称。所以我想做的是根据对象包含的name属性对数组进行排序。我试过这么简单：

I'm trying to sort an array, filled with objects from a class i wrote. The class i wrote contains an NSString itself, as the "name". So what i wanna do, is to sort the array, based on the name property the objects contain. I tried the simple:

[anArray sortedArrayUsingSelecter: CaseInsensitiveCompare];

但是你可以猜到，它将caseInsensitiveCompare消息发送给对象本身，它不会回应那个。

But as you can guess, it sends the caseInsensitiveCompare message to the objects itself, and it won't respond to that one.

所以我猜我必须让我的对象能够响应caseInsensitiveCompare？不太确定如何编写这样的方法，所以任何指针都很可爱。

So i'm guessing i have to make my objects able to respond to the caseInsensitiveCompare? Not quite sure how to write such a method, so any pointers would be lovely.

谢谢

推荐答案

您可以使用方法 sortedArrayUsingComparator ：

NSArray *sortedArray = [anArray sortedArrayUsingComparator:^(MyClass *a, MyClass *b) {
    return [a.name caseInsensitiveCompare:b.name];
}];

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