Can I scale a View in Android?

Question

Can I take a view that has been rendered by the Android framework and rescale it to some other size?

http://stackoverflow.com/questions/2963152/android-how-to-resize-a-custom-view-programmatically — Nikunj Patel, Oct 01 '11 at 11:07
I am not just trying to set the size of a view-- I would like to take a view and scale it down to a smaller size, basically taking a thumbnail of the view after it has been laid out. — bjdodson, Oct 02 '11 at 02:52

score 60 · Accepted Answer · answered Nov 14 '13 at 17:38

60

You need API 11 or above to scale a view. Here is how:

float scalingFactor = 0.5f; // scale down to half the size
view.setScaleX(scalingFactor);
view.setScaleY(scalingFactor);

answered Nov 14 '13 at 17:38

Gadzair

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Praise be to God. This tiny piece of code worked amazingly well for me !! :) Thank you ! – real 19 Feb 11 '15 at 05:39
43

In this case it's scaled but still taking the original area in the layout !! any solutions? – Hamzeh Soboh Mar 12 '15 at 08:48
@HamzehSoboh, I have same issue, Have find any solution? – Pranav Jul 31 '19 at 08:51
@Pranav use layout params to scale, it'll adapt the view itself and give a rel dimensions. – Hamzeh Soboh Aug 02 '19 at 13:58

score 10 · Answer 2 · answered Dec 07 '16 at 15:39

10

In your XML

android:scaleX="0.5"
android:scaleY="0.5"

answered Dec 07 '16 at 15:39

Taiti

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score 4 · Answer 3 · answered Oct 01 '18 at 03:46

4

For scale, I resize the width and height of the view to make it affect the area and position another view.
If you don't want it affect the area and position, use answer of @Gadzair and @Taiti

private void resize(View view, float scaleX, float scaleY) {
    ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
    layoutParams.width = (int) (view.getWidth() * scaleX);
    layoutParams.height = (int) (view.getHeight() * scaleY);
    view.setLayoutParams(layoutParams);
}

Example using

resize(view, 0.5f, 0.8f);

Result

Demo

answered Oct 01 '18 at 03:46

Linh

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Is it possible to do this with animation? – Mahdi Moqadasi Aug 24 '19 at 12:56
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be careful to use this solution. because width & height is int, scale is float -> if you care about ratio of width and height, this way can lead to wrong ratio. – Mạnh Hoàng Huynh Dec 09 '19 at 07:18

Can I scale a View in Android?

3 Answers3