How send image to WhatsApp from my application?

Question

In July 2013 WhatsApp opened their URL schemes for our apps. I have sent text to Whatsapp from my application, but now I would like send a image. How send a image to Whatsap

Answer 1

Here is a finally working solution for Swift. The method is triggered by a button. you can find some more explanations here

import UIKit

class ShareToWhatsappViewController: UIViewController, UIDocumentInteractionControllerDelegate {
    var documentController: UIDocumentInteractionController!
    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    @IBAction func shareToWhatsapp(sender: UIButton) {
        let image = UIImage(named: "my_image") // replace that with your UIImage

        let filename = "myimage.wai"
        let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, false)[0] as! NSString
        let destinationPath = documentsPath.stringByAppendingString("/" + filename).stringByExpandingTildeInPath
        UIImagePNGRepresentation(image).writeToFile(destinationPath, atomically: false)
        let fileUrl = NSURL(fileURLWithPath: destinationPath)! as NSURL

        documentController = UIDocumentInteractionController(URL: fileUrl)
        documentController.delegate = self
        documentController.UTI = "net.whatsapp.image"
        documentController.presentOpenInMenuFromRect(CGRectZero, inView: self.view, animated: false)
    }
}