iOS NSArray 排序

Question

我有一个嵌套数组，想通过内部数组中存在的键对其进行排序。下面给出的是我的数组，我想使用 NSSortDescriptor 或其他方式对其进行排序。

fares(
{
    pid = 1;
    type1 = (
    {
        color = "red";
        size = "big";
        properties = (
        {
            mod = "auto";
            payment = "EMI";
            moresegs = (
            {
                id = 141;
                name = "abcd";
                duration = "1 year"
            })
        })
    });
    type2 = (
    {
        color = "green";
        size = "small";
        properties = (
        {
            mod = "auto";
            payment = "EMI";
            moresegs = (
            {
                id = 141;
                name = "abcd";
                duration = "1 year"
            })
        })
    })
}

{
    pid = 1;
    type1 = (
    {
        color = "red";
        size = "big";
        properties = (
        {
            mod = "auto";
            payment = "EMI";
            moresegs = (
            {
                id = 141;
                name = "abcd";
                duration = "1 year"
            })
        })
    });
    type2 = (
    {
        color = "green";
        size = "big";
        properties = (
        {
            mod = "auto";
            payment = "EMI";
            moresegs = (
            {
                id = 141;
                name = "abcd";
                duration = "1 year"
            })
        })
    })
})

如何使用键 "type2->properties->payment" 对上述数组进行排序？

--------更新------------

我修改了数组并使用 NSSortDescriptor 解决了我的问题

Answer 1

试试这个:

NSSortDescriptor *descriptor = [[NSSortDescriptor alloc] initWithKey:@"type1.size" ascending:YES];
NSArray *finalArray = [self.firstArray sortedArrayUsingDescriptors:[NSArray arrayWithObjects:descriptor,nil]];