UrlImage Parser for android TextView to load Html Image tag

UrlImageParser.java

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

import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.text.Html.ImageGetter;
import android.view.View;

public class UrlImageParser implements ImageGetter {
    Context c;
    View container;

    /***
     * Construct the URLImageParser which will execute AsyncTask and refresh the container
     * @param t
     * @param c
     */
    public UrlImageParser(View t, Context c) {
        this.c = c;
        this.container = t;
    }

    public Drawable getDrawable(String source) {
        UrlDrawable urlDrawable = new UrlDrawable();

        // get the actual source
        ImageGetterAsyncTask asyncTask = 
            new ImageGetterAsyncTask( urlDrawable);

        asyncTask.execute(source);

        // return reference to URLDrawable where I will change with actual image from
        // the src tag
        return urlDrawable;
    }

    public class ImageGetterAsyncTask extends AsyncTask<String, Void, Drawable>  {
        UrlDrawable urlDrawable;

        public ImageGetterAsyncTask(UrlDrawable d) {
            this.urlDrawable = d;
        }

        @Override
        protected Drawable doInBackground(String... params) {
            String source = params[0];
            return fetchDrawable(source);
        }

        @Override
        protected void onPostExecute(Drawable result) {
            // set the correct bound according to the result from HTTP call
            urlDrawable.setBounds(0, 0, 0 + result.getIntrinsicWidth(), 0 
                    + result.getIntrinsicHeight()); 

            // change the reference of the current drawable to the result
            // from the HTTP call
            urlDrawable.drawable = result;

            // redraw the image by invalidating the container
            UrlImageParser.this.container.invalidate();
        }

        /***
         * Get the Drawable from URL
         * @param urlString
         * @return
         */
        public Drawable fetchDrawable(String urlString) {
            try {
                InputStream is = fetch(urlString);
                Drawable drawable = Drawable.createFromStream(is, "src");
                drawable.setBounds(0, 0, 0 + drawable.getIntrinsicWidth(), 0 
                        + drawable.getIntrinsicHeight()); 
                return drawable;
            } catch (Exception e) {
                return null;
            } 
        }

        private InputStream fetch(String urlString) throws MalformedURLException, IOException {
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpGet request = new HttpGet(urlString);
            HttpResponse response = httpClient.execute(request);
            return response.getEntity().getContent();
        }
    }
    
    @SuppressWarnings("deprecation")
	public class UrlDrawable extends BitmapDrawable {
        // the drawable that you need to set, you could set the initial drawing
        // with the loading image if you need to
        protected Drawable drawable;

        @Override
        public void draw(Canvas canvas) {
            // override the draw to facilitate refresh function later
            if(drawable != null) {
                drawable.draw(canvas);
            }
        }
    }
}

Are you okay with publishing this under the Apache License v2?

very useful, thanks a lot!!! I'm having a little problem with the image, all the images are cut in height... it shows only the upper part, maybe it's problem of layout??

Text and Image are overlapping to each other.. what can be the problem behind that.

Fails on line 61: urlDrawable.setBounds(0, 0, 0 + result.getIntrinsicWidth(), 0 + result.getIntrinsicHeight());

• result is NULL..
  I am quite novice in android and not sure how to fix it, when I catch error app works, just no images inside.

Text and Image are overlapping to each other.. Can u Please provide solution....

Hold on to a reference from the textview and try this at the end of the postExecute:

        URLImageParser.this.container.invalidate(); //redraw the image by invalidating the container
        container.setText(container.getText());

Can anyone post a usage example ?
Thanks

I have a question....can the string which has the URL be retrieved from the web E.g something like MySQL db or be dynamic

Is it possible to get the images from server side instead of placing in drawable folder

Not working for me! Text and image is overlapping.

DefaultHttpClient is deprecated. Try HttpURLConnection on fetch method:

private InputStream fetch(String urlString) throws MalformedURLException, IOException {

    URL url = new URL(urlString);
    HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
    InputStream stream = urlConnection.getInputStream();

    return stream;

}

@UmaYalanati and @caman9119

I have the same issue for setting the image below the text and i tried to apply ur given solution that is

URLImageParser.this.container.invalidate(); //redraw the image by invalidating the container
container.setText(container.getText());

but the last line of setting text gives error as this method is not present for that container. Looking for reply ASAP....

@parthvora25

if(container instanceof TextView) { ((TextView)container).setText(((TextView)container).getText()); }

thx @Antarix! I've tried it. it works.

You can find an improved version here: https://github.com/SufficientlySecure/html-textview/blob/master/HtmlTextView/src/main/java/org/sufficientlysecure/htmltextview/HtmlRemoteImageGetter.java

Well i get Html data from server but my image in base64 encoded in "" tag and text inside

tag......... how to show these data in exact format inside android view ?????