/// <summary> /// Shows the native SLComposeViewController to post a message with image and/or URL on Facebook, Twitter, or Weibo. /// Raises PostCompleted event when completed.</summary> /// <remarks> /// This is available in iOS 6.0 and later. /// </remarks> /// <param name="serviceType"> The service to post to. See <see cref="SLRequest">Constants in SLRequest</see>.</param> /// <param name="message"> The message to post or can be null.</param> /// <param name="image"> The image to post or can be null.</param> /// <param name="url"> The URL to post or can be null.</param> /// <param name="checkServiceAvailable"> Whether to check if the service is available first.</param> /// <returns> True if it is able to show the native view controller; false if the service type is not available.</returns> public static bool Post(string serviceType, string message, UIImage image, String url, bool checkServiceAvailable) { if (checkServiceAvailable && !SLComposeViewController.IsAvailable(serviceType)) { return(false); } var vc = SLComposeViewController.ComposeViewController(serviceType); if (vc.IsNil) { return(false); } vc.completionHandler = _composeViewCompleted; if (message != null) { vc.SetInitialText(message); } if (image != null) { vc.AddImage(image); } if (url != null) { vc.AddURL(new NSURL(url)); } UIApplication.deviceRootViewController.PresentViewController(vc, true, null); return(true); }