Parser para carregar imagens presentes em conteúdo HTML <img/> em TextView no android.

UrlImageParser.java

package br.com.toptarget.topvagas.helper;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.text.Html;
import android.util.Log;
import android.view.View;

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

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.StandardCharsets;

import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

/* How to use */
/*
String html = "Hello " +
"<img src='http://.......'/>" +
" This is a test " +
"<img src='........'/>";

this.textView = (TextView)this.findViewById(R.id.textview);
URLImageParser p = new URLImageParser(textView, this);
Spanned htmlSpan = Html.fromHtml(html, p, null);
textView.setText(htmlSpan);
* */

public class URLImageParser implements Html.ImageGetter {
    Context c;
    View container;
    private final OkHttpClient client = new OkHttpClient();
    private String TAG = URLImageParser.class.getSimpleName();
    /***
     * 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
            Log.d("height",""+result.getIntrinsicHeight());
            Log.d("width",""+result.getIntrinsicWidth());
            urlDrawable.setBounds(0, 0, 0+result.getIntrinsicWidth(), 0+result.getIntrinsicHeight());

            urlDrawable.drawable = result;

            URLImageParser.this.container.invalidate();

            URLImageParser.this.container.setMinimumHeight((URLImageParser.this.container.getHeight() + result.getIntrinsicHeight()));
        }

        /***
         * Get the Drawable from URL
         * @param urlString
         * @return
         */
        public Drawable fetchDrawable(String urlString) {
            Log.i("URLImageParser", "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 {

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

            return stream;

        }

    }
}