async System.Threading.Tasks.Task doAGraphReqest_Photo(string text, string publishToken, EventHandler <bool> done)
{
try
{
BasicFacebookProfileInfo facebookProfile = await this.GetBasicProfileInfo();
var parameters = new NSDictionary("picture", UIImage.FromFile("logo-512x512.png").AsPNG(), "caption", text);
string userID = facebookProfile.Id;
string graphPath = "/" + userID + "/photos";
var request = new Facebook.CoreKit.GraphRequest(graphPath, parameters, publishToken, null, "POST");
var requestConnection = new GraphRequestConnection();
requestConnection.AddRequest(request, (connection, result1, error1) => {
if (error1 != null)
{
done(this, false);
return;
}
string id = (result1 as NSDictionary)["post_id"].ToString();
});
requestConnection.Start();
}
catch (Exception)
{
done(this, false);
}
}
public Task <FacebookUser> Login()
{
var window = UIApplication.SharedApplication.KeyWindow;
var vc = window.RootViewController;
while (vc.PresentedViewController != null)
{
vc = vc.PresentedViewController;
}
var tcs = new TaskCompletionSource <FacebookUser>();
LoginManager manager = new LoginManager();
manager.LogOut();
manager.LoginBehavior = LoginBehavior.SystemAccount;
manager.LogInWithReadPermissions(new string[] { "public_profile", "email" }, vc, (result, error) =>
{
if (error != null || result == null || result.IsCancelled)
{
if (error != null)
{
Debug.WriteLine(error.LocalizedDescription);
}
Debug.WriteLine(error.LocalizedDescription);
tcs.TrySetResult(null);
}
else
{
var request = new Facebook.CoreKit.GraphRequest("me", new NSDictionary("fields", "id, first_name, email, last_name, picture.width(1000).height(1000)"));
request.Start((connection, result1, error1) =>
{
if (error1 != null || result1 == null)
{
Debug.WriteLine(error1.LocalizedDescription);
tcs.TrySetResult(null);
}
else
{
var id = string.Empty;
var first_name = string.Empty;
var email = string.Empty;
var last_name = string.Empty;
var url = string.Empty;
try
{
id = result1.ValueForKey(new NSString("id"))?.ToString();
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
try
{
first_name = result1.ValueForKey(new NSString("first_name"))?.ToString();
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
try
{
email = result1.ValueForKey(new NSString("email"))?.ToString();
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
try
{
last_name = result1.ValueForKey(new NSString("last_name"))?.ToString();
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
try
{
url = ((result1.ValueForKey(new NSString("picture")) as NSDictionary).ValueForKey(new NSString("data")) as NSDictionary).ValueForKey(new NSString("url")).ToString();
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
if (tcs != null)
{
tcs.TrySetResult(new FacebookUser(id, result.Token.TokenString, first_name, last_name, email, url));
}
}
});
}
});
return(tcs.Task);
}
