MainActivity如下:

package cc.testwebsiteicon;

import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.widget.ImageView;
/**
 * Demo描述:
 * 获取网址前的网站Icon图片.
 * 主要的是利用了谷歌提供的服务来获取facicon图片
 * 
 * 注意权限:
 * <uses-permission android:name="android.permission.INTERNET"/>
 * 
 * 参考资料:
 * http://blog.chengyunfeng.com/?p=523
 * Thank you very much
 */
public class MainActivity extends Activity {
    private ImageView mImageView;
    private Bitmap mBitmap;
    private Thread mThread;
    private Handler mHandler;
    private final int SUCCESS=9527;
    private final String FAVICON_SERVICE="http://www.google.com/s2/favicons?domain=";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		init();
	}
	private void init(){
		mImageView = (ImageView) findViewById(R.id.imageView);
		mThread=new Thread(){
			@Override
			public void run() {
				super.run();
				loadFavIcon();
			}
		};
		mThread.start();
		
		mHandler=new Handler(){
			@Override
			public void handleMessage(Message msg) {
				super.handleMessage(msg);
				if (msg.what==SUCCESS) {
					mImageView.setImageBitmap(mBitmap);
				}
			}
		};
	}
	
	private void loadFavIcon(){
		try {
			InputStream inputStream = null;
			String favIconPathString = FAVICON_SERVICE+"http://www.ifeng.com/";
			URL imageUrl = new URL(favIconPathString);
			HttpURLConnection httpURLConnection = (HttpURLConnection) imageUrl.openConnection();
			httpURLConnection.setConnectTimeout(5000);
			httpURLConnection.setRequestMethod("GET");
			if (httpURLConnection.getResponseCode() == 200) {
				inputStream = httpURLConnection.getInputStream();
				mBitmap = BitmapFactory.decodeStream(inputStream);
				mHandler.sendEmptyMessage(SUCCESS);
			}

		} catch (Exception e) {
			// TODO: handle exception
		}
	}

}

main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
     >

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true" />

</RelativeLayout>

Android获取网址前的网站Icon图片