Html.ImageGetter load image from internet, in AsyncTask

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Judul : Html.ImageGetter load image from internet, in AsyncTask
link : Html.ImageGetter load image from internet, in AsyncTask

Html.ImageGetter load image from internet, in AsyncTask

This example code use Html.ImageGetter load image from internet, in AsyncTask, to solve error of android.os.NetworkOnMainThreadException in the old example Html.ImageGetter load image from internet.

package com.example.androidhtmltextview;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

import android.support.v7.app.ActionBarActivity;
import android.text.Html;
import android.text.method.LinkMovementMethod;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

 public class HttpGetDrawableTask extends AsyncTask<String, Void, Drawable> {

  TextView taskTextView;
  String taskHtmlString;

  HttpGetDrawableTask(TextView v, String s) {
   taskTextView = v;
   taskHtmlString = s;
  }

  @Override
  protected Drawable doInBackground(String... params) {
   Drawable drawable = null;
   URL sourceURL;
   try {
    sourceURL = new URL(params[0]);
    URLConnection urlConnection = sourceURL.openConnection();
    urlConnection.connect();
    InputStream inputStream = urlConnection.getInputStream();
    BufferedInputStream bufferedInputStream = new BufferedInputStream(
      inputStream);
    Bitmap bm = BitmapFactory.decodeStream(bufferedInputStream);

    // convert Bitmap to Drawable
    drawable = new BitmapDrawable(getResources(), bm);

    drawable.setBounds(0, 0, bm.getWidth(), bm.getHeight());

   } catch (MalformedURLException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }

   return drawable;
  }

  @Override
  protected void onPostExecute(Drawable result) {

   final Drawable taskDrawable = result;

   if (taskDrawable != null) {
    taskTextView.setText(Html.fromHtml(taskHtmlString,
     new Html.ImageGetter() {

      @Override
      public Drawable getDrawable(String source) {
       return taskDrawable;
      }
     }, null));
   }

  }

 }

 TextView htmlTextViewRemote;

 String htmlStringRemote = "Image load from internet"
   + "<img src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9R2UggUKqVFUfmHWfKpfBF693eHxP2nq2hB2X2WQMY-jS7EMpAV6KDf5TrH9CKYVF8_xSJYa_r2pKf_3cz7-tiaUkBJZWDsfH0CgrkEXlpdu5ZnOFWvbNJ5TXcS3J76wKwO_palHkMTG1/s400/AndroidHtmlTextView_multi_images.png'>";

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);

  htmlTextViewRemote = new TextView(this);
  setContentView(htmlTextViewRemote);

  htmlTextViewRemote.setText(Html.fromHtml(htmlStringRemote,
   new Html.ImageGetter() {

    @Override
    public Drawable getDrawable(String source) {

     Toast.makeText(getApplicationContext(), source,
       Toast.LENGTH_LONG).show();

     HttpGetDrawableTask httpGetDrawableTask = new HttpGetDrawableTask(
       htmlTextViewRemote, htmlStringRemote);
     httpGetDrawableTask.execute(source);

     return null;
    }

   }, null));

  htmlTextViewRemote.setMovementMethod(LinkMovementMethod.getInstance());

 }

}

In order to load image from internet, permission of "android.permission.INTERNET" have to be added in AndroidManifest.xml.

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