.setAvatar()?

Smack Smack Dev
1

Hi all!

This is my first post and i am pretty new to smack so i apologise if this issue is a schoolboy error on

my part.

basically, i want to add an avatar to a user’'s vCard so i tried:

URL urldefault=new URL(“http://www.bbc.co.uk/tv/d/images/thumbnails/hp_jeremy_clarkson.jpg”);

VCard vCard = new VCard();

vCard.setJabberId(UserName);

vCard.setAvatar(urldefault);

vCard.save(connection);

However this failed and spat out the error

java.lang.NullPointerException

at org.jivesoftware.smack.util.StringUtils.encodeBase64(StringUtils.java:293)

at org.jivesoftware.smack.util.StringUtils.encodeBase64(StringUtils.java:282)

at org.jivesoftware.smackx.packet.VCard.setAvatar(VCard.java:330)

Next, i tried the other approach suggested:

URL urldefault=new URL(“http://www.bbc.co.uk/tv/d/images/thumbnails/hp_jeremy_clarkson.jpg”);

byte[] avatar = VCard.getBytes(urldefault);

VCard vCard = new VCard();

vCard.setJabberId(UserName);

vCard.setAvatar(avatar);

vCard.save(connection);

This failed too and produced the same error as before. I have been hacking away at this

for ages now but keep stalling on the setAvatar() bit.

Any help would be greatly appreciated.

Thanks,

Steven

2

You have to download the avatar from that URL first, convert it to jpg (due to a bug in Smack 2.2.1) if it isn’'t one already, store the result in a byte-array, and then pass that to setAvatar().

3

Hi, Anlumo

Thanks for your response.

was i not converting the jpg into a byte array with the statement

byte[] avatar = VCard.getBytes(urldefault);

?

Would you be able to display a small snippet of your solution as i have retried this again and am still getting nulls

Thanks

Steven

4

I checked the source, getBytes() only works for file URLs (bonus points for the good documentation). You have to get the data in a different way.

I haven’'t tried it, but maybe this will work:

import java.net.URL;
import java.io.InputStream; {
URL url = new URL("...");
InputStream stream = url.openStream();
...
}

To get the result of the input stream as a byte array, see here.

5

Hi anlumo

Your solution worked!

Thanks for your help

Steven