如何从Facebook获取ParseUser的名称？

Question

我在获取通过Facebook登录的Parse用户的名称时遇到了很大的问题。

登录正常，我可以在解析数据浏览器上看到用户令牌，ParseUser.getCurrentUser返回一个ParseUser和所有，但是我不知道我可以从facebook上获取用户名吗？

到目前为止，我的代码是

ParseFacebookUtils.logIn(C_RegisterLogin.this, new LogInCallback()
{
    @Override
    public void done(ParseUser user, ParseException err)
    {
        progressdialog.dismiss();

        if (user == null)
        {
            Toast toast = Toast.makeText(getApplicationContext(), "Login via Facebook failed!", Toast.LENGTH_LONG);
            toast.setGravity(Gravity.TOP, 0, 20);
            toast.show();
        }
        else
        {
            if (user.isNew())
            {
            }

            List args = new ArrayList<String>();
            args.add("name");
            JSONObject result = new JSONObject(ParseFacebookUtils.getSession().requestNewReadPermissions(C_RegisterLogin.this, args);
            String facebookname = result.optString("name");

            Toast toast = Toast.makeText(getApplicationContext(), "Thanks, "+facebookname+". You are now successfully logged in!", Toast.LENGTH_LONG);
            toast.setGravity(Gravity.TOP, 0, 20);
            toast.show();
            finish();
            startActivity(new Intent(C_RegisterLogin.this, E_SelectJourney.class));
        }
    }
});

Answer 1

解决了它，只需要它使用来自facebook的Request.executeMeRequestAsync，对于它的会话参数，我使用了会话Parse给我：D

if (ParseFacebookUtils.getSession().isOpened())
{
    Request.executeMeRequestAsync(ParseFacebookUtils.getSession(), new Request.GraphUserCallback()
    {
        @Override
        public void onCompleted(GraphUser user, Response response)
        {
            if (user != null)
            {
                progressdialog.dismiss();
                Toast toast = Toast.makeText(getApplicationContext(), "Thanks, " + user.getName() + ". You are now successfully logged in through Facebook!", Toast.LENGTH_LONG);
                toast.setGravity(Gravity.TOP, 0, 20);
                toast.show();
                finish();
                startActivity(new Intent(C_RegisterLogin.this, E_SelectJourney.class));
            }
        }
    });
}

Answer 2

Request.executeMeRequestAsync方法已被弃用，因此对于Facebook SDK 3.21，您需要使用

   if (ParseFacebookUtils.getSession().isOpened()){
Request.newMeRequest(ParseFacebookUtils.getSession(), new Request.GraphUserCallback()
{
    @Override
    public void onCompleted(GraphUser user, Response response)
    {
        if (user != null)
        {
            progressdialog.dismiss();
            Toast toast = Toast.makeText(getApplicationContext(), "Thanks, " + user.getName() + ". You are now successfully logged in through Facebook!", Toast.LENGTH_LONG);
            toast.setGravity(Gravity.TOP, 0, 20);
            toast.show();
            finish();
            startActivity(new Intent(C_RegisterLogin.this, E_SelectJourney.class));
        }
    }
}).executeAsync();}