How to clear an ImageView in Android?


Question

I am reusing ImageViews for my displays, but at some point I don't have values to put it.

So how to clear an ImageView in Android?

I've tried:

mPhotoView.invalidate();
mPhotoView.setImageBitmap(null);

None of them have cleared the view, it still shows previous image.

1
250
3/8/2018 10:19:32 AM

Accepted Answer

I used to do it with the dennis.sheppard solution:

viewToUse.setImageResource(0);

it works but it is not documented so it isn't really clear if it effects something else in the view (you can check the ImageView code if you like, i didn't).

I think the best solution is:

viewToUse.setImageResource(android.R.color.transparent);

I like this solution the most cause there isn't anything tricky in reverting the state and it's also clear what it is doing.

502
7/5/2019 9:17:55 AM

I had a similar problem, where I needed to basically remove ImageViews from the screen completely. Some of the answers here led me in the right direction, but ultimately calling setImageDrawable() worked for me:

imgView.setImageDrawable(null);

(As mentioned in the comment, such usage is documented in the official docs: ImageView#setImageDrawable.)


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