ios - 使用Swift在WhatsApp上共享图像

我正在创建一个通过社交媒体平台(尤其是在WhatsApp上)共享图像的应用程序。我尝试使用UIActivityViewController，但显示工作表时它不显示WhatsApp选项。我在线搜索并找到下面的代码:显示工作表时，它显示WhatsApp选项，但是选择WhatsApp选项会导致应用程序崩溃。这是代码:

let controller = UIDocumentInteractionController()
let path = NSSearchPathForDirectoriesInDomains(.DocumentDirectory,.UserDomainMask, true)
let documentDir = path[0] as String

 let imgPath=documentDir.stringByAppendingPathComponent("tmp_flag.png")
 let imageURL = NSURL.fileURLWithPath(imgPath)

  println("Image path :\(imageURL)")

  controller.delegate = self
  controller.UTI = "net.whatsapp.image"
  controller.URL = imageURL!
  controller.presentOpenInMenuFromRect(CGRectZero, inView: self.view, animated: true)

谁能在某个地方发现任何错误？如果没有，是否有人知道如何使其工作？

最佳答案

在Swift 3中使用此代码

@IBAction func whatsappShareWithImages(_ sender: AnyObject) {
    let urlWhats = "whatsapp://app"
    if let urlString = urlWhats.addingPercentEncoding(withAllowedCharacters:CharacterSet.urlQueryAllowed) {
        if let whatsappURL = URL(string: urlString) {

            if UIApplication.shared.canOpenURL(whatsappURL as URL) {

                if let image = UIImage(named: "whatsappIcon") {
                    if let imageData = UIImageJPEGRepresentation(image, 1.0) {
                        let tempFile = URL(fileURLWithPath: NSHomeDirectory()).appendingPathComponent("Documents/whatsAppTmp.wai")
                        do {
                            try imageData.write(to: tempFile, options: .atomic)
                            self.documentInteractionController = UIDocumentInteractionController(url: tempFile)
                            self.documentInteractionController.uti = "net.whatsapp.image"
                            self.documentInteractionController.presentOpenInMenu(from: CGRect.zero, in: self.view, animated: true)

                        } catch {
                            print(error)
                        }
                    }
                }

            } else {
               print("Cannot open whatsapp")
            }
        }
    }

}

将此代码添加到您的应用程序**plist**

<key>LSApplicationQueriesSchemes</key>
<array>
    <string>whatsapp</string>
</array>

您也可以参考小型应用程序以获取参考:https://github.com/nithinbemitk/iOS-Whatsapp-Share

关于ios - 使用Swift在WhatsApp上共享图像，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/28492869/