在Pages-Swift中打开文本

Question

在我的Swift 2应用程序中，用户通过文本字段创建一串文本，然后将其共享给另一个应用程序。现在，我只能将文本共享作为.txt文件，当我打开系统共享对话框时，它不向Open In Pages提供选项。我如何才能使用户可以选择在Pages中将其输入的文本作为文档打开？

我必须将文本转换为.docx或.pages格式吗？如果是这样，怎么样？

Answer 1

诀窍是将文件本地保存为.txt文件，然后使用UIDocumentInteractionController打开它。以下是完整的示例代码：

import UIKit

class ViewController: UIViewController, UIDocumentInteractionControllerDelegate {

    var interactionController: UIDocumentInteractionController?

    func openInPages(body: String, title: String) throws {
       // create a file path in a temporary directory
       let fileName = "\(title).txt"
       let filePath = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent(fileName)

       // save the body to the file
       try body.writeToFile(filePath, atomically: true, encoding: NSUTF8StringEncoding)

       // for iPad to work the sheet must be presented from a bar item, retrieve it here as below or create an outlet of the Export bar button item.
       let barButtonItem = navigationItem.leftBarButtonItem!

       // present Open In menu
       interactionController = UIDocumentInteractionController(URL: NSURL(fileURLWithPath: filePath))
       interactionController?.presentOptionsMenuFromBarButtonItem(barButtonItem, animated: true)
    }
}

从代码中的任意位置拨打openInPages（例如，当用户按下Export栏按钮项时）：

openInPages("This will be the body of the new document", title: "SomeTitle")