使用Facebook SDK上传Unity中的屏幕截图

Question

我正在尝试使用Facebook SDK使用FB.Feed()而不是FB.API()将屏幕截图上传到Facebook，以便用户可以将消息写入其帖子。 我能够在Unity Editor上使用它，但是当我在Android上试用它时，我得到：

“此对话​​框已传递错误参数。

API错误代码：100
API错误说明：参数无效
错误消息：图片URL格式不正确“

这是我写的代码：

var width = Screen.width;
var height = Screen.height;
var tex = new Texture2D(width, height, TextureFormat.RGB24, false);
// Read screen contents into the texture
tex.ReadPixels(new Rect(0, 0, width, height), 0, 0);
tex.Apply();
byte[] screenshot = tex.EncodeToPNG();
File.WriteAllBytes(Application.persistentDataPath + "/Screenshot.png", screenshot);

//Application.CaptureScreenshot(Application.persistentDataPath + "/Screenshot.png");
Debug.Log(Application.persistentDataPath + "/Screenshot.png");
Debug.Log("Does File Exist? " + File.Exists(Application.persistentDataPath + "/Screenshot.png"));
Debug.Log("File://" + Application.persistentDataPath + "/Screenshot.png");
FB.Feed(
    picture: "File://" + Application.persistentDataPath + "/Screenshot.png"
);

Answer 1

您无法使用FB.Feed()将图像上传到Facebook， picture参数必须是网页中的网址。

要上传图像，您可以使用FB.API("me/photos")方法

private void TakeScreenshot()
{
    var width = Screen.width;
    var height = Screen.height;
    var tex = new Texture2D(width, height, TextureFormat.RGB24, false);
    // Read screen contents into the texture
    tex.ReadPixels(new Rect(0, 0, width, height), 0, 0);
    tex.Apply();
    byte[] screenshot = tex.EncodeToPNG();

    WWWForm wwwForm = new WWWForm();
    wwwForm.AddBinaryData("image", screenshot, "screenshot.png");

    FB.API("me/photos", HttpMethod.POST, CallBack, wwwForm);
}