android textview 展示图片例子

【实例截图】

【核心代码】

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<br><img src=\"http://y1.ifengimg.com/2014/03/20/09045132.jpg\"><br/>"
	          "乌克兰<br>"
	          "<img src=\"http://y3.ifengimg.com/2014/03/20/11255332.jpg\"><br>俄罗斯<br>"
	          "<img src=\"http://tp4.sinaimg.cn/1794530711/180/5656394191/1\"><br>美国"
	          "<br><img src=\"http://y3.ifengimg.com/2014/03/20/11255332.jpg\">";
	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;
	}

}