title: Can't get Email address through Facebook Android SDK
body: <p>I tried to use below code to get my facebook email address via my app, but return value is null. </p>
  
  <p>I don't know what the reason, but I can get email address using <code>Graph API explorer</code>.  Is there anybody know what is wrong with this code?</p>
  
  <pre><code>@Override
  
  public void onCreate(Bundle savedInstanceState) {
  
  // Request email address
  
  GraphRequest.newMeRequest(
  
     loginResult.getAccessToken(),new GraphRequest.GraphJSONObjectCallback() {
  
     public void onCompleted(JSONObject me, GraphResponse response) {
  
        Log.d("TEST", response.toString());
        if (response.getError() != null) {
          // handle error
        } else {
          Log.d("TEST", me.toString());
          String email = me.optString("email");
          String id = me.optString("id");
          Log.d("TEST", "Email:" + email);
       }
    }
  }).executeAsync();
  
  LoginButton authButton =(LoginButton) findViewById(R.id.login_button);
  
  List&lt;String&gt; permissions = new ArrayList&lt;&gt;();
  
  permissions.add("public_profile");
  
  permissions.add("email");
  
  authButton.setReadPermissions(permissions);
  
  }
  </code></pre>