我可以使用'for'循環嗎？

-1

我想知道如果我可以使用for代碼循環。請原諒我，我知道這是一個蹩腳的問題，但我是新來的迅速。希望你能幫我這裏，夥計們！我可以使用'for'循環嗎？

非常感謝大家！

代碼：

override func viewDidLoad() { 
    super.viewDidLoad() 

    // Background color 

    let kolorTla = UIColor(red: 0/255.0, green: 66/255.0, blue: 132/255.0, alpha: 1.0) 
    view.backgroundColor = kolorTla 

    // Icons border 

    ramka.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
    ramka.layer.cornerRadius = 5.0 
    ramka.layer.borderWidth = 3 


    // Image 

    skill1.image = UIImage(named: "english") 

    // Image border 

    skill1.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
    skill1.layer.cornerRadius = 5.0 
    skill1.layer.borderWidth = 3 
    skill1.contentMode = .scaleAspectFit 

    // Image 

    skill2.image = UIImage(named: "literature") 

    // Image border 

    skill2.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
    skill2.layer.cornerRadius = 5.0 
    skill2.layer.borderWidth = 3 
    skill2.contentMode = .scaleAspectFit 

    // Image 

    skill3.image = UIImage(named: "idea1") 

    // Image border 

    skill3.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
    skill3.layer.cornerRadius = 5.0 
    skill3.layer.borderWidth = 3 
    skill3.contentMode = .scaleAspectFit

來源

2017-05-24 Bartosz Machowski

這個方法我是一個總的斯威夫特無知，但讓我給您一個建議。忘記它是Swift;假裝它是你熟悉的其他語言。如果你使用其他語言的for循環（或者任何類型的循環），你可以在Swift中使用for循環。 –

您可以在某種程度上。你只需要定義一個你的項目的數組並循環它們。不知道它是否可以爲您節省大量代碼，但確實使它更容易理解。

override func viewDidLoad() { 
    super.viewDidLoad() 

    // Background color 
    let kolorTla = UIColor(red: 0/255.0, green: 66/255.0, blue: 132/255.0, alpha: 1.0) 
    view.backgroundColor = kolorTla 

    // Icons border 
    ramka.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
    ramka.layer.cornerRadius = 5.0 
    ramka.layer.borderWidth = 3 

    // Set Image 
    skill1.image = UIImage(named: "english") 
    skill2.image = UIImage(named: "literature") 
    skill3.image = UIImage(named: "idea1") 

    // Set Image border 
    for skill in [skill1, skill2, skill3] { 
     skill.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
     skill.layer.cornerRadius = 5.0 
     skill.layer.borderWidth = 3 
     skill.contentMode = .scaleAspectFit 
    } 
}

至少在我看來，更好的方法是創建一個簡單的函數來處理這個問題。

override func viewDidLoad() { 
    super.viewDidLoad() 

    // Background color 
    let kolorTla = UIColor(red: 0/255.0, green: 66/255.0, blue: 132/255.0, alpha: 1.0) 
    view.backgroundColor = kolorTla 

    // Icons border 
    ramka.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
    ramka.layer.cornerRadius = 5.0 
    ramka.layer.borderWidth = 3 
    // Set Images 
    setupImageView(imageView: skill1, imageName: "english") 
    setupImageView(imageView: skill2, imageName: "literature") 
    setupImageView(imageView: skill3, imageName: "idea1") 
} 

func setupImageView(imageView: UIImageView, imageName: String) { 
    // Set Image 
    imageView.image = UIImage(named: imageName) 
    // Set Image border 
    imageView.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
    imageView.layer.cornerRadius = 5.0 
    imageView.layer.borderWidth = 3 
    imageView.contentMode = .scaleAspectFit 
}

來源

2017-05-24 17:02:28

太好了，非常感謝！ :) –

我喜歡做出功能的決定。 –

是的，可以。將skill1，skill2和skill3放置在一個數組中，並像這樣迭代它：

var objectArray = [skill1,skill2,skill3] 


for object in objectArray 
{ 
object.layer = .... 


}

來源

2017-05-24 17:01:17 jglasse

太好了，非常感謝！ :) –

當你不能夠使用for遍歷他們修改變量名和循環，你可以把你的skill情況下，在一個數組和循環通過他們的方式。

... 

skill1.image = UIImage(named: "english") 
skill2.image = UIImage(named: "literature") 
skill3.image = UIImage(named: "idea1") 

let skills = [skill1, skill2, skill3] 

for skill in skills { 
    skill.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
    skill.layer.cornerRadius = 5.0 
    skill.layer.borderWidth = 3 
    skill.contentMode = .scaleAspectFit 
}

來源

2017-05-24 17:04:16

太好了，非常感謝！ :) –

你可以只擴展你的ImageView

extension UIImageView { 
    func addCustomLayer() { // add arguments to function if you wish to change the value assigned 
     self.layer.borderColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0).cgColor 
     self.layer.cornerRadius = 5.0 
     self.layer.borderWidth = 3 
     self.contentMode = .scaleAspectFit 
    } 
    } 
}

然後調用每個UIImageView的

for each in [skill1, skill2, skill3] { 
    each.addCustomLayer() 
}

來源

2017-05-24 17:15:33 Lamar

我可以使用'for'循環嗎？

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