如何使用Swift以编程方式粘贴？

Question

我想要一个用户可以按下的按钮，它会自动将剪贴板中的任何文本粘贴到UITextView。

我怎样才能在Swift中做到这一点？

已经回答here，但它在Objective-C中。

Answer 1

你应该能够将它们转换为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

您可以在Swift中实现复制和粘贴方法，如：

// 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

对于 Swift 5.0 及更高版本

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
}