Android TextView 显示网络图片

package com.iaiai;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.net.URL;

import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.text.Html;
import android.text.Html.ImageGetter;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

import com.hilary.utils.AsyncImageLoader;

/**
 * 
 * <p>
 * Title: Main.java
 * </p>
 * <p>

 * </p>
 * <p>
 * Http: iaiai.iteye.com
 * </p>
 * <p>
 * Create time: 2011-10-26
 * </p>
 * 
 * @author 丸子
 * @version 0.0.1
 */
public class Main extends Activity {
  Button btn2;
  ImageView imge;
  Thread thread = null;
  Runnable runnable = null;
  TextView textView = null;
   Drawable dra = null;
  private AsyncImageLoader asyncImageLoader;
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    asyncImageLoader = AsyncImageLoader.getAsyncImageLoader();
    btn2 = (Button) findViewById(R.id.btn2);
    textView = (TextView) findViewById(R.id.show_tv);
    btn2.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        Handler handler = new Handler();
//        handler.post(runable);
        textView.setText(Html.fromHtml( _readFile("/sdcard/test2.txt"), imgGetter, null));
      }
    });
  }

  public String _readFile(String str) {
    StringBuffer sb = new StringBuffer();
    File file = new File(str);
    try {
      FileReader is = new FileReader(file);
      while (is.ready()) {
        int c = is.read();
        sb.append((char) c);
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
    return sb.toString();
  }

  ImageGetter imgGetter = new Html.ImageGetter() {

    @Override
    public Drawable getDrawable(String source) {
      System.out.println("***" + source);
      //异步加载图片
//       Drawable drawable = asyncImageLoader.loadDrawable(
//          source, new ImageCallback() {
//
//            @Override
//            public void imageLoaded(Drawable imageDrawable,
//                String imageUrl) {
//               if (imageDrawable == null) {
//               } else {
//                 imageDrawable.setBounds(0, 0, imageDrawable.getIntrinsicWidth(), imageDrawable   
//                                .getIntrinsicHeight()); 
//               }
//               dra = imageDrawable;
//            }
//          });
//      if(source.equals("1")){
//        drawable = Main.this.getResources().getDrawable(R.drawable.aa);
//      } else if (source.equals("2")){
//        drawable = Main.this.getResources().getDrawable(R.drawable.b);
//      } else {
//        drawable = Main.this.getResources().getDrawable(R.drawable.icon);
//      }
      URL url;  
      Drawable drawable = null;
            try {  
                url = new URL(source);  
                drawable = Drawable.createFromStream(url.openStream(), "");  
            } catch (Exception e) {  
                return null;  
            }  

      drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable   
                    .getIntrinsicHeight()); 
      return drawable;
    }   

  };

}