textView 解析包含图片的html内容

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public class MainActivity extends Activity { private Handler handler; private String html; private TextView tv; private ProgressBar bar; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);  // 网上找的html数据  html = "<html><head><title>TextView使用HTML</title></head><body><p><strong>强调</strong></p><p><em>斜体</em></p>"    + "<p><a href=\"http://www.csdn.net"><span style="font-family: Arial, Helvetica, sans-serif;">找的html数据</span></a>学习</p><p><font color=\"#aabb00\">颜色1"    + "</p><p><font color=\"#00bbaa\">颜色2</p><h1>标题1</h1><h3>标题2</h3><h6>标题3</h6><p>大于>小于<</p><p>"    + "下面是网络图片</p><img src=\"http://my.csdn.net/uploads/201207/19/1342690866_6478.png\"/></body>"    + "下面是网络图片</p><img src=\"http://my.csdn.net/uploads/201207/19/1342690866_6478.png"/></body></html>";  tv = (TextView) this.findViewById(R.id.id);  bar = (ProgressBar) this.findViewById(R.id.id_bar);  tv.setMovementMethod(ScrollingMovementMethod.getInstance());// 滚动  handler = new Handler() {   @Override   public void handleMessage(Message msg) {    // TODO Auto-generated method stub    if (msg.what == 0x101) {     bar.setVisibility(View.GONE);     tv.setText((CharSequence) msg.obj);    }    super.handleMessage(msg);   }  };  // 因为从网上下载图片是耗时操作 所以要开启新线程  Thread t = new Thread(new Runnable() {   Message msg = Message.obtain();   @Override   public void run() {    // TODO Auto-generated method stub    bar.setVisibility(View.VISIBLE);    /**     * 要实现图片的显示需要使用Html.fromHtml的一个重构方法：public static Spanned     * fromHtml (String source, Html.ImageGetterimageGetter,     * Html.TagHandler     * tagHandler)其中Html.ImageGetter是一个接口，我们要实现此接口，在它的getDrawable     * (String source)方法中返回图片的Drawable对象才可以。     */    ImageGetter imageGetter = new ImageGetter() {     @Override     public Drawable getDrawable(String source) {      // TODO Auto-generated method stub      URL url;      Drawable drawable = null;      try {       url = new URL(source);       drawable = Drawable.createFromStream(         url.openStream(), null);       drawable.setBounds(0, 0,         drawable.getIntrinsicWidth(),         drawable.getIntrinsicHeight());      } catch (MalformedURLException e) {       // TODO Auto-generated catch block       e.printStackTrace();      } catch (IOException e) {       // TODO Auto-generated catch block       e.printStackTrace();      }      return drawable;     }    };    CharSequence test = Html.fromHtml(html, imageGetter, null);    msg.what = 0x101;    msg.obj = test;    handler.sendMessage(msg);   }  });  t.start(); } @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; }}
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