ios - UIDocumentInteractionController() swift

Question

我创建了一个文件，我想通过 UIDocumentInteractionController 共享它。

我不确定如何从 documentsPath 和我保存文件的目标路径获取 URL

        let someText = NSString(string: "Test")
        let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String

        let destinationPath = documentsPath.stringByAppendingPathComponent("Data.txt")
        var error:NSError?
        
        let written = someText.writeToFile(destinationPath,
            atomically: true,
            encoding: NSUTF8StringEncoding,
            error: &error)
        
        if written{
            println("Successfully stored the file at path \(destinationPath)")

  let dic = UIDocumentInteractionController()

   self.dic.URL = url
            let v = sender as UIView
            let ok = self.dic.presentOpenInMenuFromRect(
                v.bounds, inView: v, animated: true)
            

Answer 1

修改你的代码如下

import UIKit

class ViewController: UIViewController {
    var docController:UIDocumentInteractionController!

    override func viewDidLoad() {
        let someText = NSString(string: "Test")
        if let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as? String {

        let destinationPath = documentsPath.stringByAppendingPathComponent("Data.txt")
        var error:NSError?

        let written = someText.writeToFile(destinationPath,
            atomically: true,
            encoding: NSUTF8StringEncoding,
            error: &error)

        if written{
            println("Successfully stored the file at path \(destinationPath)")
            }
       if let url = NSURL(fileURLWithPath: destinationPath) {
            docController = UIDocumentInteractionController(URL: url)
        }
        }
    }

    @IBAction func sendFile(sender:AnyObject) {
    docController.presentOptionsMenuFromRect(sender.frame, inView:self.view, animated:true)
    }

}

现在将 IBAction 连接到 Storyboard中的按钮。下一页:

1. 单击左侧边栏中的蓝色项目图标，然后选择水平菜单中的信息。
2. 展开文档类型并在名称字段中输入“txt”，然后Types 字段中的“public.data, public.content”
3. 现在展开Exported UTIs并在Description中输入“txt”字段，Identifier 字段中的“kUTTypeText”和符合字段
中的“public.data, public.content”

所以一切看起来像这样:

您现在可以构建并运行要测试的应用。