Set image / background source dynamically

Question

is there any possibility to set background image dynamically?!

I try to explain what I mean.

String picVariable = getPictureFromServer();

ImageView image = (ImageView)v.findViewById(R.id.dynamic_image);

// I know, that doesn't work, but that's the way I looking for
image.setBackgroundResource(picVariable);

Thank you in advance,

Mur

Ps. I also read this article. It would suggested in one answer, to use java reflection to get a field of the R class by name. But I've never used reflextion before. An example would be very helpfull

What does getPictureFromServer return?

David Hedlund
– David Hedlund

2010-10-11 08:05:23 +00:00
Commented Oct 11, 2010 at 8:05 — David Hedlund
– David Hedlund, Commented Oct 11, 2010 at 8:05
Something like "abc.png", and there is abc.png in drawables

Tima
– Tima

2010-10-11 08:15:22 +00:00
Commented Oct 11, 2010 at 8:15 — Tima
– Tima, Commented Oct 11, 2010 at 8:15

Tima · Accepted Answer · 2010-10-11 08:12:19Z

5

Sometimes I should take a bit more time for searching :)

I found the answer reading this article, and it works fine for me:

// The server says, it should be *.png
String picName = getPictureFromServer();
picName = picName.replace(".png", "");

Resources r = getResources();
int picId = r.getIdentifier(picName, "drawable", "com.mypackage.myapp");

ImageView image = (ImageView)v.findViewById(R.id.dynamic_image);
image.setBackgroundResource(picId);

answered Oct 11, 2010 at 8:12

Tima

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Comments

Matthieu · Accepted Answer · 2010-10-11 08:02:01Z

0

ImageView does not have any background, but for other widget (like Button), you should use setBackgroundResource(int).

Sorry, I am not sure I read the question correctly... maybe your problem is just that you are trying to use it with a Widget that does not use background ?

edited Oct 11, 2010 at 8:02

answered Oct 11, 2010 at 7:56

Matthieu

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1 Comment

Tima Over a year ago

it's not really my project, I just clean errors and add new funktionality. And there is a background for imageviews, but it seems to me very weird as well to use in an imageview a background :)

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