unfortunately, app has stopped when trying to log into Facebook from mobile

Questions & Answers
1

I managed to incorporate the Facebook API into my project successfully, meaning, my game can take screenshots and post them into Facebook when clicking a button. However, this only works when running the application within the editor; touching that same button on my android device crashes the application instead (Unfortunately, appName has stopped).

I have been looking for a solution to this issue two days now, and while I came across a lot of different fixes, nothing seems to work; I already tried generating the correct hash key (with several different approaches), the apparently famous Rafael Fix, I tried fixing the screen orientation issue via AndroidManifest.xml, and I tried commenting the ScreenShot posting code (to make sure that Login is at fault).

I haven’t made the app public on facebook, or uploaded to game to the play store yet (since it isnt ready for release yet anyways), but I don’t think that should cause the game to crash like this.

I have a couple of days off my mandatory army service, and I really wanted to get this up and running before I had to go back to base. But, I am at my wit’s end.

I’d really appreciate it if anyone could help me out with this.

Relevant Code:

  void Awake() {

        FB.Init(SetInit, OnHideUnity); 
    }


    private void SetInit() {

        print("FB: Init");

        if (FB.IsLoggedIn) print("FB: logged in");

        else print("FB: Not logged in");
    
    }


    public void FBLogin() {

        FB.LogInWithPublishPermissions(new List<string>() { "email", "publish_actions" }, AuthCallback);
        
    }


    void AuthCallback(ILoginResult result) {

        if (FB.IsLoggedIn) {

            print("FB: Login success");
            StartCoroutine(TakeScreenshot());
        }

        else print("FB: Login failure");
      
    }



    public void ShareScore() {

        if (!FB.IsLoggedIn) FBLogin();
    }

    

    private IEnumerator TakeScreenshot() {

        yield return new WaitForEndOfFrame();
        //print("W : " + Screen.width + " H : " + Screen.height); 
        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();

        var wwwForm = new WWWForm();
        wwwForm.AddBinaryData("image", screenshot, "InteractiveConsole.png");
        wwwForm.AddField("message", "herp derp.  I did a thing!  Did I do this right?");
        FB.API("me/photos", HttpMethod.POST, ShareCallback, wwwForm);
    }
    


    private void ShareCallback(IResult result) {

        if (result == null) {

            print("no result");     
            return;
        }

        // Some platforms return the empty string instead of null.
        if (!string.IsNullOrEmpty(result.Error)) print(result.ToString());
        
        else if (result.Cancelled) print("Cancelled");
        
        else if (!string.IsNullOrEmpty(result.RawResult)) print("Sucess, check log");
        
        else print("empty"); 
        
    }


    private void OnHideUnity(bool isGameShown) {

        print("FB: Hide Unity : " + !isGameShown);
       /* if (!isGameShown) Time.timeScale = 0;
        else Time.timeScale = 1;*/
    }
2

Your code work in your Editor but no in android phone.

You need to change this:

public void FBLogin() {
 
         FB.LogInWithPublishPermissions(new List<string>() { "email", "publish_actions" }, AuthCallback);
 
}

To this:

public void FBLogin() {
 
         FB.LogInWithReadPermissions(new List<string>() { "email" }, AuthCallback);
         FB.LogInWithPublishPermissions(new List<string>() { "publish_actions" }, AuthCallback);
         
}