Arrays 在Swift3中的字符串数组中选择一个列表

我有个问题。我的数组从列表中随机选取一个字符串，我该怎么做呢

我想从列表中随机挑选一种产品

我的想法是，我可以使用数组再次执行此操作，但我得到以下错误：

EXC_BAD_指令（代码=EXC_i386_INVOP，子代码=0x0

我的代码是：

private func randomProduct() -> Int {
let myArray1 = ["Nintendo Classic Mini NES", "Microsoft Office 2016 Home and Business", "Rubie's Deluxe Muscle Chest Batman Child", "Giro Dime", "Varta Powersports AGM 12V 12Ah 512014010A514", "Pohl-Boskamp Gelomyrtol Forte", "Panasonic ES-LV9N-S803", "Traxxas X-Maxx (77076-4)", "GoPro HERO 4", "Bose Lifestyle 650", "WMF Function 4 Kochtopf-Set 4-teilig", "Microsoft Surface Book", "Hewlett-Packard HP Color LaserJet Pro M252dw (B4A22A)", "Apple iPhone 7", "X-lite X-403GT Elegance", "Denon AVR-X3300W", "Hasbro Spiel des Lebens Banking", "Avent SCD 630/26", "Ray-Ban Aviator Metal RB3025"]
return Int(myArray1[Int(arc4random_uniform(UInt32(myArray1.count)))])!

希望你能帮助我

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Thx太多了！

您很接近了，但是您希望使用随机数Int作为索引来查找数组中的字符串。然后返回字符串。因此，只需做一些更改：

private func randomProduct() -> String { // Return String, not Int
    let myArray1 = ["Nintendo Classic Mini NES", "Microsoft Office 2016 Home and Business", "Rubie's Deluxe Muscle Chest Batman Child", "Giro Dime", "Varta Powersports AGM 12V 12Ah 512014010A514", "Pohl-Boskamp Gelomyrtol Forte", "Panasonic ES-LV9N-S803", "Traxxas X-Maxx (77076-4)", "GoPro HERO 4", "Bose Lifestyle 650", "WMF Function 4 Kochtopf-Set 4-teilig", "Microsoft Surface Book", "Hewlett-Packard HP Color LaserJet Pro M252dw (B4A22A)", "Apple iPhone 7", "X-lite X-403GT Elegance", "Denon AVR-X3300W", "Hasbro Spiel des Lebens Banking", "Avent SCD 630/26", "Ray-Ban Aviator Metal RB3025"]
    return myArray1[Int(arc4random_uniform(UInt32(myArray1.count)))] // Remove the Int()
}

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数组中的所有字符串都不能转换为

Int

…要添加到这一点，您可能需要返回一个

字符串

，并去掉

返回

行中的

Int

。