title: how to get json response in webview
body: <pre><code> protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_login);
      activity = this;
      mContext = getApplicationContext();
      util = new Login_Utils(mContext, activity);
  
      Intent intent = getIntent();
      url = intent.getExtras().getString("url");
  
      webView = (WebView)findViewById(R.id.webview_Login);
      webView.setWebViewClient(new WebViewClient(){
  
          @Override
          public boolean shouldOverrideUrlLoading (WebView view, String url) {
  
              return false;
          }
  
  
          public void onPageFinished(WebView view, String urlConnection){
  
          }
      });
      webView.loadUrl(url);
  
  }
  </code></pre>
  
  <p>My app has 2 types of login. 
  1. create account in the app and login
  2. login with well-known website (facebook, etc....)</p>
  
  <p>If I tried to login with the method 2, the webview shows the login screen of the website. (all work needed to implement login mechanism is done in server side)</p>
  
  <p>If the id and password are match, the server give back some information as a json format.</p>
  
  <p>So, I want to get json object. </p>