Implement WebChromeClient to retrieve downloaded favicon and title in WebView.

In the post of "Create your own App for FIFA World Cup", we use our default icon and title. Now I want to use the downloaded favicon and title from the target page as our icon and title.

To get the downloaded icon and title, implement our custom WebChromeClient, MyWebChromeClient, override onReceivedIcon() and onReceivedTitle() methods.

To update icon and title, call getSupportActionBar().setIcon(iconDrawable) and getSupportActionBar().setTitle(title). In order to call getSupportActionBar(), change our MainActivity extends ActionBarActivity, instead of Activity.

Call myBrowser.setWebChromeClient(new MyWebChromeClient()) in MainActivity to set our custom WebChromeClient.

MainActivity.java

package com.example.myfifa;

import android.annotation.SuppressLint;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {


 public class MyWebChromeClient extends WebChromeClient {

  @Override
  public void onReceivedTitle(WebView view, String title) {
   Toast.makeText(getApplicationContext(), 
    "Title received: " + title, 
    Toast.LENGTH_LONG).show();
   getSupportActionBar().setTitle(title); 
   super.onReceivedTitle(view, title);
  }

  @Override
  public void onReceivedIcon(WebView view, Bitmap icon) {
   Toast.makeText(getApplicationContext(), 
    "icon received", 
    Toast.LENGTH_LONG).show();
   
   BitmapDrawable iconDrawable = 
    new BitmapDrawable(getResources(), icon);
   
   getSupportActionBar().setIcon(iconDrawable);
   super.onReceivedIcon(view, icon);
  }

 }

 WebView myBrowser;
 private final static String FIFA_HOME = "http://www.fifa.com/";
 
 private final static String KEY_URL = "KEY_URL";

 @SuppressLint("SetJavaScriptEnabled")
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  //restore url after config/orientation changed
  String openUrl = FIFA_HOME;
  if (savedInstanceState != null) {
   openUrl = savedInstanceState.getString(KEY_URL);
  }

  myBrowser = (WebView)findViewById(R.id.mybrowser);
  myBrowser.getSettings().setJavaScriptEnabled(true);
  myBrowser.setWebViewClient(new WebViewClient());
  myBrowser.setWebChromeClient(new MyWebChromeClient());
  myBrowser.loadUrl(openUrl);

 }

 @Override
 protected void onSaveInstanceState(Bundle outState) {
  //save url before config/orientation changed
  outState.putString(KEY_URL, myBrowser.getUrl());
  super.onSaveInstanceState(outState);
 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {

  // Inflate the menu; this adds items to the action bar if it is present.
  getMenuInflater().inflate(R.menu.main, menu);
  return true;
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  int id = item.getItemId();
  if (id == R.id.action_openinbrowser) {
   
   Uri openUri = Uri.parse(myBrowser.getUrl());
   Intent myIntent = new Intent(Intent.ACTION_VIEW, openUri);
   startActivity(myIntent);
   
   return true;
  }
  return super.onOptionsItemSelected(item);
 }

}

Other files, activity_main.xml, /res/menu/main.xml, /res/values/strings.xml and AndroidManifest.xml, refer to the last post.



Download the files.