Post screenshot photo on facebook

Hi Guys, First I working in android platform with Facebook SDK. All I want is to post the image into facebook timeline, I saw the way how FB.Feed working, it’s just taking the url image to post the link. But I have a different method I want to share my photo(screenshot taken inside the application) directly into Facebook with Hastag name like #Contest, #Complaints, #Goal, etc… I searched and they said I have to do this in one way which mean I can save my photo into some link with FB.API and use FB.Feed to call the link. But am confused actually I want to share my screenshot into facebook timeline, I want the way to do it. So far I used this unity scripts to share the image but it’s not working.

public void Share()

	IEnumerator ShareImageShot()
		ShareImage = true;

		yield return new WaitForEndOfFrame();
		Texture2D screenTexture = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, true);
		screenTexture.ReadPixels(new Rect(0f, 0f, Screen.width, Screen.height),0,0);
		byte[] dataToSave = screenTexture.EncodeToPNG();
		string destination = Path.Combine(Application.persistentDataPath, Screenshot_Name);
		File.WriteAllBytes(destination, dataToSave);
		var wwwForm = new WWWForm();
		wwwForm.AddBinaryData("image", dataToSave, "InteractiveConsole.png");
		FB.API("me/photos", Facebook.HttpMethod.POST, Callback, wwwForm);


	private Texture2D lastResponseTexture;
	private string lastResponse = "";
	private string ApiQuery = "";
	void Callback(FBResult result)
		lastResponseTexture = null;
		if (result.Error != null)
			lastResponse = "Error Response:

" + result.Error;
else if (!ApiQuery.Contains(“/picture”))
lastResponse = "Success Response:
" + result.Text;
lastResponseTexture = result.Texture;
lastResponse = "Success Response:

There is no error, but when I press the share button nothing happened. please give me the correct way to do this.

You have to first login using

FB.Login("public_profile,email,user_friends", LoginCallback);

LoginCallback you can check if successfully logged in or not using FB.IsLoggedIn is true then call FB.API