Set ImageView Drawable programmatically

Question

I am trying to set the image of a ImageView programmatically from a array of drawables but keep getting a NUllPointerException....does this method look correct for setting Image resource..

//get a random drawable
int[] imageSelection= {R.drawable.buddycheck, R.drawable.logdive3, R.drawable.sea, R.drawable.weather, R.drawable.logo1};
Random whichImage = new Random();
int theImage = whichImage.nextInt(imageSelection.length);

displayImage.setBackgroundResource(theImage);

Where and how do you initialize displayImage ?

BrainCrash
– BrainCrash

2014-02-23 16:13:32 +00:00
Commented Feb 23, 2014 at 16:13 — BrainCrash
– BrainCrash, Commented Feb 23, 2014 at 16:13

M.Sameer · Accepted Answer · 2014-02-23 16:15:17Z

4

You are setting the image resource to a random number. You need to do it like this:

int theImage = imageSelection[whichImage.nextInt(imageSelection.length)];
displayImage.setBackgroundResource(theImage);

answered Feb 23, 2014 at 16:15

M.Sameer

3,1611 gold badge28 silver badges37 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Tanmay Ranjan · Accepted Answer · 2018-09-05 13:25:22Z

0

Try this : imageView.setImageResource(R.drawable.image);

answered Sep 5, 2018 at 13:25

Tanmay Ranjan

3542 silver badges9 bronze badges

Collectives™ on Stack Overflow

Set ImageView Drawable programmatically

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related