Pentium10 Pentium10 - 3 months ago 17
Android Question

How to clear an ImageView in Android?

I am resusing 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.

Answer

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

viewToUse.setImageResource(0);

it works but it is not documentated so it isn't realy 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.

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