Android Get dimensions of Image in ImageButton

Question

Is there a way to get the dimensions of the image currently set in the ImageButton? I'm trying to achieve this.

I have a ImageButton with a default pic of 36 x 36. I then select an image of size say 200 x 200. I wanna call something like:

imageButton.setImageBitmap(Bitmap.createScaledBitmap(
                        bitmap, 36, 36, true));

to shrink the image to 36 x 36. Reason why I want to get the original image size is to cater for hdpi, mdpi and ldpi so I can set dimensions of the bitmap to 36 x 36, 24 x 24 and 18 x 18 respectively before adding it to the ImageButton. Any ideas?

Oh man, I got the answer after randomly fiddling with the code:

imageButton.getDrawable().getBounds().height();    
imageButton.getDrawable().getBounds().width();

Answer 1

Try this code -

imageButton.getDrawable().getBounds().height();    
imageButton.getDrawable().getBounds().width();

Answer 2

Maurice's answer didn't quite work for me, as I would frequently get 0 back, resulting in an Exception being thrown whenever trying to generate the scaled bitmap:

IllegalArgumentException: width and height must be > 0

I found a few other options if it helps anyone else.

Option 1

The imageButton is a View which means we can get the LayoutParams and take advantage of the built-in height and width properties. I found this from this other SO answer.

imageButton.getLayoutParams().width;
imageButton.getLayoutParams().height;

Option 2

Have our imageButton come from a Class which extends ImageButton, and then override View#onSizeChanged.

Option 3

Get the drawing rectangle on the view and use the width() and height() methods to get the dimensions:

android.graphics.Rect r = new android.graphics.Rect();
imageButton.getDrawingRect(r);
int rectW = r.width();
int rectH = r.height();

Combination

My final code ended up combining the three and selecting the max. I am doing this because I will get different results, depending on which phase the application is in (like when the View has not been fully drawn).

int targetW =  imageButton.getDrawable().getBounds().width();
int targetH = imageButton.getDrawable().getBounds().height();
Log.d(TAG, "Calculated the Drawable ImageButton's height and width to be: "+targetH+", "+targetW);

int layoutW = imageButton.getLayoutParams().width;
int layoutH = imageButton.getLayoutParams().height;
Log.e(TAG, "Calculated the ImageButton's layout height and width to be: "+targetH+", "+targetW);
targetW = Math.max(targetW, layoutW);
targetH = Math.max(targetW, layoutH);

android.graphics.Rect r = new android.graphics.Rect();
imageButton.getDrawingRect(r);
int rectW = r.width();
int rectH = r.height();
Log.d(TAG, "Calculated the ImageButton's getDrawingRect to be: "+rectW+", "+rectH);

targetW = Math.max(targetW, rectW);
targetH = Math.max(targetH, rectH);
Log.d(TAG, "Requesting a scaled Bitmap of height and width: "+targetH+", "+targetW);

Bitmap scaledBmp = Bitmap.createScaledBitmap(bitmap, targetW, targetH, true);