Android - Get button's border width

Question

How can I get the border width of a stand Android button programmatically? I simply need to resize the text to fit to the gray are, but I cannot do that without knowing the size of the border. Thanks http://s4.postimg.org/9w7idof4d/screenshot_Border_Width.png

Did you try to use padding? Somethink like this: [link](http://stackoverflow.com/questions/9685658/add-padding-on-view-programmatically) — Vyacheslav, Jun 04 '13 at 17:34
I have the padding set to 0. Also, I would like to completely avoid XML because I don't even know where to begin in making XML work dynamically. — Dan Bray, Jun 04 '13 at 17:52
try to change the values in code using setPadding method. [setPadding](http://developer.android.com/reference/android/view/View.html#setPadding%28int,%20int,%20int,%20int%29) — Vyacheslav, Jun 04 '13 at 19:22
I already did that. cmdView.setPadding(0, 0, 0, 0); That does not work. — Dan Bray, Jun 04 '13 at 19:26
The text will fit correctly if I can set it to the correct size. I just need to find the width of the actual button not including its border, and pass it to my SetTextSize function. — Dan Bray, Jun 04 '13 at 19:30
possible duplicate of [How to get the button's border size in Android](http://stackoverflow.com/questions/17374977/how-to-get-the-buttons-border-size-in-android) — Karthik Balakrishnan, Jul 05 '13 at 03:36

score 1 · Answer 1 · edited Jan 06 '14 at 15:55

1

ShapeDrawable bgShape = (ShapeDrawable )btnbck.getBackground();

    Rect padding = null;
    bgShape.getPadding(padding );

The image of button is just a drawable object. So you have to get the value of it. Anyway it can do with the shape anything you want.

edited Jan 06 '14 at 15:55

BenMorel

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answered Jun 04 '13 at 19:41

Vyacheslav

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This won't work. This line of code: ShapeDrawable bgShape = (ShapeDrawable) cmdView.getBackground(); prevents my program from running – Dan Bray Jun 04 '13 at 21:33
1

I changed Rect padding = null; to Rect padding = new Rect(); and ShapeDrawable to Drawable and my program no longer crashes, however the padding returned is completely the wrong value. I read somewhere that the standard buttons are use NinePatchDrawable images. I think thats the problem. I've found no way to get the background as a NinePatchDrawable – Dan Bray Jun 12 '13 at 02:52

Dan Bray · Answer 2 · 2013-06-28T00:16:30.250

1

I've finally found a solution. The default padding for spinners happens to be the same as the border of a button.

int paddingLeft = mySpinner.getPaddingLeft();

Hopefully it will be the same on all devices.

Edit: It is not the same on all devices. I still don't have a working solution

edited Jun 28 '13 at 00:16

answered Jun 12 '13 at 04:25

Dan Bray

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score 0 · Accepted Answer · answered Jul 08 '13 at 03:48

This gets the width and height of the button's border:

final Button button = new Button(this);
params = new RelativeLayout.LayoutParams(50, 50);
layout.addView(button, params);
button.post(new Runnable()
{
    @Override
    public void run()
    {
         button.buildDrawingCache();
         Bitmap viewCopy = button.getDrawingCache();

         boolean stillBorder = true;
         PaddingLeft = 0;
         PaddingTop = 0;
         while (stillBorder)
         {
             int color = viewCopy.getPixel(PaddingLeft, button.getHeight() / 2);
             if (color != Color.TRANSPARENT)
                 stillBorder = false;
             else
             PaddingLeft++;
         }              
         stillBorder = true;
         while (stillBorder)
         {
             int color = viewCopy.getPixel(button.getWidth() / 2, PaddingTop);
             if (color != Color.TRANSPARENT)
                 stillBorder = false;
             else
                 PaddingTop++;
         }
     }
});

Android - Get button's border width

3 Answers3