使用Facebook SDK来上传截图在Unity

Question

我正在尝试使用Facebook SDK使用FB.Feed()代替FB.API()，使用户可以写一个消息，他们的帖子上传截图到Facebook。我能得到这个团结编辑工作，但是当我尝试在我的Android，我得到：

“这个对话框已经通过了错误的参数

API错误代码：100
API错误说明：无效的参数
错误消息：图片网址的格式不正确”

这里是我写的代码：

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

不能上传图片使用FB.Feed()给Facebook，picture parametr必须在网站的网址。

要上传图片，你可以使用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); 
}