title: Stuck on White Screen Appears after Facebook login Android
body: <p>I'm using Facebook SDK to login to facebook account...
  after trying to sign in white screen appears and stuck on it..
  this is my code :
  `
  public class MainActivity extends Activity implements OnClickListener{</p>
  
  <pre><code>Facebook fb;
  ImageView pic, button;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      // Toast.makeText(MainActivity.this, "", Toast.LENGTH_SHORT).show();
  
      String APP_ID = "151170088390760"; // getString(R.string.APP_ID);
      fb = new Facebook(APP_ID);
  
      button = (ImageView) findViewById(R.id.login);
      pic = (ImageView) findViewById(R.id.profile_pic);
  
      button.setOnClickListener(this);
      updateButtonImage();
  }
  
  private void updateButtonImage() {
      if(fb.isSessionValid()) {
          button.setImageResource(R.drawable.logout_button);
      }else {
          button.setImageResource(R.drawable.login_button);
      }
  }
  
  @Override
  public void onClick(View v) {
      if(fb.isSessionValid()) {
          try {
              fb.logout(getApplicationContext());
              updateButtonImage();
          } catch (MalformedURLException e) {
              e.printStackTrace();
          } catch (IOException e) {
              e.printStackTrace();
          }
      } else {
          // login to facebook
          fb.authorize(MainActivity.this, new DialogListener(){
  
              @Override
              public void onFacebookError(FacebookError e) {
                  Toast.makeText(MainActivity.this, "onFacebookError()", Toast.LENGTH_SHORT).show();
              }
  
              @Override
              public void onError(DialogError e) {
                  Toast.makeText(MainActivity.this, "onError()", Toast.LENGTH_SHORT).show();
              }
  
              @Override
              public void onComplete(Bundle values) {
                  updateButtonImage();
                  Toast.makeText(MainActivity.this, "onComplate()", Toast.LENGTH_SHORT).show();
              }
  
              @Override
              public void onCancel() {
                  Toast.makeText(MainActivity.this, "onCancel()", Toast.LENGTH_SHORT).show();
              }
          });
      }
  }
  
  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
      super.onActivityResult(requestCode, resultCode, data);
      fb.authorizeCallback(requestCode, resultCode, data);
  }
  </code></pre>
  
  <p>`
  I made sure that the Keystore many times 
  and I have registered my application to facebook developers site
  thank you for helping :)
  this is the white screen pic:</p>
  
  <p><img src="https://i.stack.imgur.com/S7ywY.png" alt=""></p>
  
  <p><strong>NOTE:</strong> I'm using the Facebook SDK 3.0.1</p>
  
  <p><strong>Problem Has been SOLVED:</strong> cuz I tried to login from other facebook account that was not signed as developer</p>
  
  <p><strong>Thank You</strong></p>