NSArray字符串排序问题[重复]

Question

所以我有以下代码：

NSArray *pathArray = @[@"path/Documents/page9.png",
    @"path/Documents/page8.png",
    @"path/Documents/page10.png",
    @"path/Documents/page11.png",
    @"path/Documents/page0.png",
    @"path/Documents/page12.png",
    @"path/Documents/page6.png",
    @"path/Documents/page4.png",
    @"path/Documents/page5.png",
    @"path/Documents/page1.png",
    @"path/Documents/page7.png",
    @"path/Documents/page3.png",
    @"path/Documents/page2.png"];

如果我现在使用以下方法对数组进行排序：

[pathArray sortUsingSelector:@selector(caseInsensitiveCompare:)];

数组排序错误

结果：

pathArray: (
    "path/Documents/page0.png",
    "path/Documents/page1.png",
    "path/Documents/page10.png",
    "path/Documents/page11.png",
    "path/Documents/page12.png",
    "path/Documents/page2.png",
    "path/Documents/page3.png",
    "path/Documents/page4.png",
    "path/Documents/page5.png",
    "path/Documents/page6.png",
    "path/Documents/page7.png",
    "path/Documents/page8.png",
    "path/Documents/page9.png"}

带有"page10.png", "page11.png" and "page12.png" 组件的元素应该是最后三个元素。是否存在涵盖此问题的其他选择器？

如果不是，怎么可能做到这一点？

Answer 1

你可以使用这个实现你自己的比较方法：

[pathArray sortUsingComparator:^(id one, id two) {
    return [one compare:two options:NSCaseInsensitiveSearch | NSNumericSearch];
}

Answer 2

这是因为你的文件名不一致，例如：

path/Documents/page0.png

应该是：

path/Documents/page00.png

每个文件都有一个 2 位数字。解决此问题后，您的排序将正常工作。