ios - 如何按降序方式对数组进行排序？

Question

我在我的应用程序中得到数组作为响应。现在我想根据每个对象的价格对这个数组进行排序，那么我该怎么做呢？在我的应用程序中，我以这种方式收到响应。

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`get_available_busdetail" =     (
            {
        FirmaNo = 284;
        IslemTipi = 1;
        "company_logo_url" = "aHR0cHM6Ly9ldGlja2V0LmlwZWt0ci5jb20vd3Nib3MzL0xvZ29WZXIuQXNweD9mbnVtPTI4NA==";
        "company_name" = "Metro Turizm";
        "departure_city" = ANTALYA;
        "destination_city" = "\U0130STANBUL";
        firmaAdi = "Metro Turizm";
        hatNo = 1;
        "info_i" = "ANTALYA ->\U0130STANBUL ";
        price = 75;
        saat = "MTkwMC0wMS0wMVQxMDozMDowMCswMjowMA==";
        seat = "2+1";
        seferTakipNo = 073403;
        tarih = "2016-03-09";
        time = "10:30";
    },
            {
        FirmaNo = 20;
        IslemTipi = 1;
        "company_logo_url" = aHR0cHM6Ly9ldGlja2V0LmlwZWt0ci5jb20vd3Nib3MzL0xvZ29WZXIuQXNweD9mbnVtPTIw;
        "company_name" = "\U0130smail Ayaz";
        "departure_city" = ANTALYA;
        "destination_city" = "\U0130STANBUL";
        firmaAdi = "\U0130smail Ayaz";
        hatNo = 6;
        "info_i" = "Alanya ->ANTALYA ->\U0130STANBUL ";
        price = 70;
        saat = "MTkwMC0wMS0wMVQxMDowMDowMCswMjowMA==";
        seat = "2+1";
        seferTakipNo = 179680;
        tarih = "2016-03-09";
        time = "13:00";
    },




 {
        FirmaNo = 284;
        IslemTipi = 1;
        "company_logo_url" = "aHR0cHM6Ly9ldGlja2V0LmlwZWt0ci5jb20vd3Nib3MzL0xvZ29WZXIuQXNweD9mbnVtPTI4NA==";
        "company_name" = "Metro Turizm";
        "departure_city" = ANTALYA;
        "destination_city" = "\U0130STANBUL";
        firmaAdi = "Metro Turizm";
        hatNo = 1;
        "info_i" = "ANTALYA ->\U0130STANBUL ";
        price = 70;
        saat = "MTkwMC0wMS0wMVQxNjowMDowMCswMjowMA==";
        seat = "2+2";
        seferTakipNo = 073430;
        tarih = "2016-03-09";
        time = "16:00";
    })

现在我想根据每个对象值 Price 以降序误差对这个数组进行排序，所以基于它我如何按降序对它进行排序。

Answer 1

objective-C

NSSortDescriptor *descriptor = [[NSSortDescriptor alloc] initWithKey:@"price"  ascending:NO];
NSArray * sortedArray =[yourArrayName sortedArrayUsingDescriptors:[NSArray arrayWithObjects:descriptor,nil]];

swift

var descriptor: NSSortDescriptor = NSSortDescriptor(key: "price", ascending: False)
var sortedArray: NSArray = yourArrayName.sortedArrayUsingDescriptors([descriptor])