你如何使uiimageview以快速隨機的姿勢出現？

Question

我是新來的swift，我一直想知道如何使uiimageview出現在一個隨機的位置很快。我試圖訪問uii的座標來放入一個隨機數字，但我找不到正確的語法。

Answer 1

這段代碼獲得的x座標的隨機數和y座標的隨機數，然後爲它們分配是UIImageView

let IMAGE_WIDTH = //whatever the width of your uiimageview is 
let IMAGE_HEIGHT = //whatever the height of your uiimageview is 

// calculate the size of the rectangle that the random point can be in 
let VALID_WIDTH = UIScreen.mainScreen().bounds.size.width - IMAGE_WIDTH 
let VALID_HEIGHT = UIScreen.mainScreen().bounds.size.height - IMAGE_HEIGHT 

let x = CGFloat(CGFloat(arc4random()) % VALID_WIDTH) 
let y = CGFloat(CGFloat(arc4random()) % VALID_HEIGHT) 

var myImageview = UIImageView() 
myImageView.frame = CGRectMake(x, y, IMAGE_WIDTH, IMAGE_HEIGHT) 

// add the imageview to the view you want to display it in 
coolView.addSubview(myImageview)