如何使用 Swift 以编程方式粘贴？

Question

I want to have a button the user can press that will automatically paste whatever text is in the clipboard into a UITextView .

How can I do that in Swift?

It has been answered here but it's in Objective-C.

Answer 1

You should just be able to convert those to Swift:

@IBAction func copy() {
    let pb: UIPasteboard = UIPasteboard.generalPasteboard();
    pb.string = textView.text // Or another source of text
}

@IBAction func paste() {
    let pb: UIPasteboard = UIPasteboard.generalPasteboard();
    textView.text /*(Or somewhere to put the text)*/ = pb.string
}

Answer 2

You can implement copy and paste method in Swift like:

// Function receives the text as argument for copying
func copyText(textToCopy : NSString)
{
    let pasteBoard    = UIPasteboard.generalPasteboard();
    pasteBoard.string = textToCopy; // Set your text here
}

// Function returns the copied string
func pasteText() -> NSString
{
    let pasteBoard    = UIPasteboard.generalPasteboard();
    println("Copied Text : \(pasteBoard.string)"); // It prints the copied text
    return pasteBoard.string!;
}

Answer 3

For Swift 5.0 and up

func copyText(from text: String) {
    weak var pb: UIPasteboard? = .general
    pb?.string = text
}

func pasteText() -> String? {
    weak var pb: UIPasteboard? = .general
    
    guard let text = pb?.string else { return nil}
    
    return text
}