Android TextView解析HTML内容

最后显示的结果如下：

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下面这张图实现异步下载图片，同时对html内容正确的显示

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package com.example.textimage;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LevelListDrawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Html;
import android.text.Spanned;
import android.view.Gravity;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity {

    private String html = "欧盟

"
            + "乌克兰
"
            + "
俄罗斯
"
            + "
美国"
            + "
";
    private TextView tv;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tv = (TextView) findViewById(R.id.textTV);
        NetworkImageGetter imageGetter = new NetworkImageGetter();
        Spanned spanned = Html.fromHtml(html, imageGetter, null);
        // 图片文字居中显示
        tv.setGravity(Gravity.CENTER_HORIZONTAL);
        tv.setText(spanned);

    }


    private final class NetworkImageGetter implements Html.ImageGetter {

        @Override
        public Drawable getDrawable(String source) {
            // TODO Auto-generated method stub

            LevelListDrawable d = new LevelListDrawable();
            new LoadImage().execute(source, d);
            return d;
        }

    }


    /**** 异步加载图片 **/
    private final class LoadImage extends AsyncTask<Object, Void, Bitmap> {

        private LevelListDrawable mDrawable;

        @Override
        protected Bitmap doInBackground(Object... params) {
            String source = (String) params[0];
            mDrawable = (LevelListDrawable) params[1];

            try {
                InputStream is = new URL(source).openStream();
                return BitmapFactory.decodeStream(is);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(Bitmap bitmap) {

            if (bitmap != null) {
                BitmapDrawable d = new BitmapDrawable(bitmap);
                mDrawable.addLevel(1, 1, d);
                mDrawable
                        .setBounds(0, 0, bitmap.getWidth(), bitmap.getHeight());
                // mDrawable.setBounds(0, 0,
                // getWindowManager().getDefaultDisplay().getWidth(),
                // bitmap.getHeight());
                mDrawable.setLevel(1);
                CharSequence t = tv.getText();
                tv.setText(t);
            }
        }
    }

    @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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FR:徐海涛（Hunk Xu)