Android Open Source - sami-android-demo Accounts Web Client

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License

The source code is released under:

Apache License

Java Source Code

package io.samsungsami.android;
/*w w w .j a  va 2 s.c o m*/
import android.annotation.SuppressLint;
import android.os.Build;
import android.util.Log;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class AccountsWebClient extends WebViewClient{
  
  public static final String TAG = AccountsWebClient.class.getName();
  private static final String FORM_SELECTOR = "document.querySelectorAll('form[id*=\"input\"], form[id*=\"signin\"]')[0].id";
  private static final String FORM_USERNAME_SELECTOR = "document.querySelectorAll('input[id*=\"User\"], input[id*=\"user\"]')[0].id";
  private static final String FORM_PASSWORD_SELECTOR = "document.querySelectorAll('input[id*=\"Pass\"], input[id*=\"pass\"]')[0].id";
  
  public AccountsWebClient(){}
  
  /**
   * Everything is handled by the webview, true to handle download manually
   */
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
      if(isAuthorizeUrl(url)) {
        Log.d(TAG, "onPageFinished code page URL: "+url);
        
        String[] segments = url.split("=");
        String accessToken = "";
        for(int i = 0; i< segments.length; i++){
          if(segments[i].contains("access_token")){
            accessToken = segments[i+1];
            break;
          }
        }
        
        //TODO: clear the window, but this triggers another page load event
        //view.loadData("","text/plain","utf-8"); 
        view.clearView();
        String currentToken = Sami.getInstance().getToken();
        if(Sami.getInstance().isVisible() && (currentToken == null 
          || !currentToken.equalsIgnoreCase(accessToken))){
          Sami.getInstance().setVisible(false);
          ((AccountsWebView) view).onLoginCompleted(accessToken);
        }
        }
      return false;
    }
    
    /**
     * Guess if the url is the login form
     * @param url
     * @return
     */
    public boolean isLoginForm(String url){
      return ((url.contains("response_type=") || url.contains("check.do")) && !url.contains("signin"));
    }
    
    /**
     * Guess if the url belongs to SA service
     * @param url
     * @return
     */
    public boolean isSALoginForm(String url){
      return (url.contains("check.do") && !url.contains("signin"));
    }
    
    /**
     * Guess if the url is the one that contains the access token
     * @param url
     * @return
     */
    public boolean isAuthorizeUrl(String url){
    return url.contains("access_token=");
  }
    
    public void onPageFinished(WebView view, String url) {
      onPageFinishedAccounts((AccountsWebView)view, url);
    }
    
    /**
     * Injects javascript to get the user credentials on the login form
     * @param view
     * @param url
     */
    @SuppressLint("NewApi")
  public void onPageFinishedAccounts(AccountsWebView view, String url) {
      if (isLoginForm(url)){
        String captureScript = 
            "try{" +
              "document.getElementById("+FORM_SELECTOR+").onsubmit=function(){" +
                "var usernameFieldId = " + FORM_USERNAME_SELECTOR + ";" +
                "var passwordFieldId = " + FORM_PASSWORD_SELECTOR + ";" +
                "window.myInterface.setCredentials(" +
                    "document.getElementById(usernameFieldId).value," +
                    "document.getElementById(passwordFieldId).value" +
                    ");" +
              "};" +
            "}catch(e){}";
          if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { 
            view.loadUrl("javascript:"+captureScript);
          }
          else{
            view.evaluateJavascript(captureScript, null);
          }
        
        //Try to auto fill the login form
        String username = "";
        String password = "";
        if(Sami.getInstance().getCredentials() != null){
          username = Sami.getInstance().getCredentials().getEmail();
          password = Sami.getInstance().getCredentials().getPassword();
        }
        String setScript = "try{" +
            "var usernameFieldId = " + FORM_USERNAME_SELECTOR + ";" +
          "var passwordFieldId = " + FORM_PASSWORD_SELECTOR + ";" +
            "document.getElementById(usernameFieldId).value = '"+username+"';" +
            "document.getElementById(passwordFieldId).value = '"+password+"';" +
            "}catch(e){}";
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) { 
          view.loadUrl("javascript:"+setScript); 
        }
        else{
          view.evaluateJavascript(setScript, null);
        }
        
      }
      else{
        Log.d(TAG, "onPageFinished URL: "+url);
      }
      
        view.setFocusable(true);
        view.setFocusableInTouchMode(true);
        view.requestFocus(View.FOCUS_DOWN);
    }

    
}

Java Source Code List

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