Android Drawable Images from URL

Question

I am presently using the following piece of code to load in images as drawable objects form a URL.

Drawable drawable_from_url(String url, String src_name) 
throws java.net.MalformedURLException, java.io.IOException {
        return Drawable.createFromStream(((java.io.InputStream)new java.net.URL(url).getContent()), src_name);

}

This code works exactly as wanted, but there appears to be compatibility problems with it. In version 1.5, it throws a FileNotFoundException when I give it a URL. In 2.2, given the exact same URL, it works fine. The following URL is a sample input I am giving this function.

http://bks6.books.google.com/books?id=aH7BPTrwNXUC&printsec=frontcover&img=1&zoom=5&edge=curl&sig=ACfU3U2aQRnAX2o2ny2xFC1GmVn22almpg

How would I load in images in a way that is compatible across the board from a URL?

Joonsoo · Accepted Answer · 2019-07-10 13:02:22Z

51

Bitmap is not a Drawable. If you really need a Drawable do this:

public static Drawable drawableFromUrl(String url) throws IOException {
    Bitmap x;

    HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
    connection.connect();
    InputStream input = connection.getInputStream();

    x = BitmapFactory.decodeStream(input);
    return new BitmapDrawable(Resources.getSystem(), x);
}

(I used the tip found in https://stackoverflow.com/a/2416360/450148)

edited Jul 10, 2019 at 13:02

Joonsoo

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answered Feb 28, 2012 at 21:31

Felipe

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2 Comments

avalancha Over a year ago

Great answer, but note that the constructor is deprecated. Use BitmapDrawable(Resources, Bitmap) to ensure that the drawable has correctly set its target density

mochadwi Over a year ago

great, answered. should be updated due to deprecated

OneCricketeer · Accepted Answer · 2017-08-23 04:18:37Z

16

Solved it myself. I loaded it in as a bitmap using the following code.

Bitmap drawable_from_url(String url) throws java.net.MalformedURLException, java.io.IOException {

    HttpURLConnection connection = (HttpURLConnection)new URL(url) .openConnection();
    connection.setRequestProperty("User-agent","Mozilla/4.0");

    connection.connect();
    InputStream input = connection.getInputStream();

    return BitmapFactory.decodeStream(input);
}

It was also important to add in the user agent, as googlebooks denies access if it is absent

edited Aug 23, 2017 at 4:18

OneCricketeer

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answered Aug 3, 2010 at 14:44

Señor Reginold Francis

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2 Comments

Prince Dholakiya Over a year ago

It's Throws Exception like android.os.NetworkOnMainThreadException

Jorgesys Over a year ago

This is incorrect, @Prince see my answer using an AsyncTask to avoid NetworkOnMainThreadException.

Dan Lew · Accepted Answer · 2010-07-30 20:47:44Z

5

I'm not sure, but I think that Drawable.createFromStream() is more intended for use with local files rather than downloaded InputStreams. Try using BitmapFactory.decodeStream(), then wrapping the return Bitmap in a BitmapDrawable.

answered Jul 30, 2010 at 20:47

Dan Lew

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1 Comment

I82Much Over a year ago

I seem to remember running into that problem before; I was on 1.5 at the time.

Jorgesys · Accepted Answer · 2019-05-07 18:06:13Z

To get a Drawable image from an URL you must use an AsyncTask to avoid NetWorkOnMainThreadException, and the result Drawable obtained in onPostExecute() you can set to your ImageView:

    final String urlImage = "https://www.android.com/static/2016/img/hero-carousel/banner-android-p-2.jpg";

    new AsyncTask<String, Integer, Drawable>(){

        @Override
        protected Drawable doInBackground(String... strings) {
            Bitmap bmp = null;
            try {
                HttpURLConnection connection = (HttpURLConnection) new URL(urlImage).openConnection();
                connection.connect();
                InputStream input = connection.getInputStream();
                bmp = BitmapFactory.decodeStream(input);
            } catch (IOException e) {
                e.printStackTrace();
            }
            return new BitmapDrawable(bmp);
        }

        protected void onPostExecute(Drawable result) {

            //Add image to ImageView
            myImageView.setImageDrawable(result);

        }


    }.execute();

Aziz Shaikh · Accepted Answer · 2012-10-30 10:22:49Z

1

The following code works for me:

Matrix Mat = new Matrix();

Bitmap Source = BitmapFactory.decodeFile("ItemImagePath");

Bitmap Destination = Bitmap.createScaledBitmap( Source, 320, 320, true );

Source = Bitmap.createBitmap( Destination, 0, 0, Destination.getWidth(), Destination.getHeight(),Mat, true );

ItemImageView.setImageBitmap(Source);

edited Oct 30, 2012 at 10:22

Aziz Shaikh

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answered Oct 30, 2012 at 10:04

Dhukkaieswaran.N

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Comments

abhi · Accepted Answer · 2023-01-10 21:36:47Z

1

Kotlin Solution With Coil

fun convertUrlToDrawable(url: String, result: (Drawable) -> Unit) {
val loader = ImageLoader(context = appContext)
val req = ImageRequest.Builder(appContext)
    .allowHardware(true)
    .allowConversionToBitmap(true)
    .data(url) // demo link
    .target { drawable ->
        result(drawable)
    }
    .build()
loader.enqueue(req)

}

answered Jan 10, 2023 at 21:36

abhi

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Comments

Hussein Nasereddine · Accepted Answer · 2023-02-02 09:21:28Z

1

You can use Glide to load your imageURL as Drawable and then reuse it wherever needed.
Here's how to implement this strategy:

Glide.with(ctx)
      .asDrawable()
      .load(mImageURL)
      .into(new CustomTarget<Drawable>() {
        @Override
        public void onResourceReady(@NonNull Drawable resource, @Nullable Transition<? super Drawable> transition) {
           // Your imageURL is now converted to a drawable 'resource'
        }

        @Override
        public void onLoadCleared(@Nullable Drawable placeholder) {
           
        }
      });

answered Feb 2, 2023 at 9:21

Hussein Nasereddine

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Comments

Adriaan Koster · Accepted Answer · 2013-10-22 10:37:19Z

0

You can use com.androidquery.AndroidQuery to do this quite simply. For example:

AQuery aq = new AQuery(this);
aq.id(view).image("http://yourserver/yourimage.png", true, true, 300, new BitmapAjaxCallback() {
        @Override
        public void callback(String url, ImageView imageView, Bitmap bitmap, AjaxStatus status) {
            Drawable drawable = new BitmapDrawable(getResources(), bm);
        }
    });

If you use the BitmapAjaxCallback you will get access to the BitMap which you can wrap as a BitmapDrawable.

edited Oct 22, 2013 at 10:37

answered Jul 15, 2013 at 14:21

Adriaan Koster

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1 Comment

Munim Over a year ago

The person asked for some way to create a drawable from an url,yours one is doing that underneath,no way of getting the drawable;rather you pass a view and the library sets the image on it which is downloaded from the url.So how it can be considered to be an answer for the question?

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