How to set bitmap as notification icon in Android

Question

Hello I am looking for the way to set the bitmap which are not in res directory. Actually I am getting that icon from the URL and want to set it in the notification area.

Here I am doing but it is only set the icon which are in res directory.

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
    .setSmallIcon(R.drawable.ic_stat_logo)
    .setContentTitle(Util.notificationTitle)
    .setStyle(new NotificationCompat.BigTextStyle()
    .bigText(notificationMessage))
    .setAutoCancel(true)
    .setDefaults(Notification.DEFAULT_SOUND)
    .setContentText(notificationMessage);

Any idea to set the fetch bitmap from URL and set that icon as Notification icon ?

What if you fetched an downloaded it into your local space and then referenced it that way with its absolute path? Then it is downloaded and in a sense, cached. — Fallenreaper, May 23 '14 at 19:20
@Fallenreaper but this method `setSmallIcon` only accept the int in the method argument not any path — N Sharma, May 23 '14 at 19:21

score 9 · Accepted Answer · edited May 23 '17 at 12:24

Already answered here: https://stackoverflow.com/a/16055373/1071594

Summary: It's not possible to set a custom small icon, but from API level 11 you can use setLargeIcon() after you have downloaded your image and converted it to a Bitmap.

[edit] There is another solution: If you create a completely custom notification with its own view, you could put anything inside that view, including downloaded images.

score 6 · Answer 2 · answered Nov 28 '15 at 04:36

6

In API level 23 , Android has introduced new method to setSmallIcon using bitmap downloaded from url.

    notificationBuilder.setSmallIcon(Icon.createWithBitmap(yourDownloadedBitmap));

answered Nov 28 '15 at 04:36

rafa

1,319
8
20

5

Anyone has a good way to use this in combination with NotificationCompat ( means icon for 23+ and res-id fallback for x<23 ) ? – ligi Jul 31 '16 at 15:36
4

This not works, setSmallIcon(int) cannot be applied to android.graphics.drawable.Icon – vinidog Dec 23 '17 at 14:59
Instead of using Icon.createWithBitmap I used IconCompat.createWithBitmap since one of the setSmallIcon method needs an IconCompat object. – Juan P. May 08 '23 at 14:31

EstherSalinas · Answer 3 · 2014-05-23T20:07:30.513

I think you can't use directly the URL, but you can use the following statement, but only if you use a large icon.

This statement converts a URL into a BitMap:

Bitmap bitmap = getBitmapFromURL("Your URL");


public Bitmap getBitmapFromURL(String strURL) {
    try {
        URL url = new URL(strURL);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStream input = connection.getInputStream();
        Bitmap myBitmap = BitmapFactory.decodeStream(input);
        return myBitmap;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

Now, in your notification builder you can use the following code:

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
    .setLargeIcon(bitmap)
    .setContentTitle(Util.notificationTitle)
    .setStyle(new NotificationCompat.BigTextStyle()
    .bigText(notificationMessage))
    .setAutoCancel(true)
    .setDefaults(Notification.DEFAULT_SOUND)
    .setContentText(notificationMessage);

Don't forget the permissions in your Manifest:

<uses-permission android:name="android.permission.INTERNET" />

See `setSmallIcon` only accept the int from res not any bitmap — N Sharma, May 23 '14 at 19:56
setting only largeIcon is not enough. smallIcon is mandatory, this code will cause the app to crash — Alaa Eddine Cherbib, May 16 '20 at 10:38

score -2 · Answer 4 · answered Sep 15 '19 at 06:05

The Simple way to set up a custom png image to Notifications is by create a drawable folder in app/src/main/res folder and paste the image to that folder then you can access that image like this

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context) .setSmallIcon(R.drawable.imagename);

How to set bitmap as notification icon in Android

4 Answers4

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