read dimension from xml

Question

I've read and tried a few answers that I found in stackoverflow but the ones I found didn't work.

I've the following dimensions (1+2 for portrait button height\width and 3+4 for landscape).

I just want the button size to be smaller in landscape than portrait

<dimen name="button_height_portrait">180dp</dimen>
<dimen name="button_width_portrait">180dp</dimen>
<dimen name="button_height_landscape">60dp</dimen>
<dimen name="button_width_landscape">60dp</dimen>

in my code I override onConfigurationChanged:

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);

        if (mScreenOrientation == Configuration.ORIENTATION_PORTRAIT) {
           if (mButton != null) {
               Integer ButtonWidthPortrait = getResources().getDimensionPixelSize(R.dimen.button_width_portrait);
               Integer ButtonHeightPortrait = getResources().getDimensionPixelSize(R.dimen.button_height_portrait);
               mButton.setWidth(ButtonWidthPortrait);
               mButton.setHeight(ButtonHeightPortrait);
           }
        }
        else if (mScreenOrientation == Configuration.ORIENTATION_LANDSCAPE) {
            if (mButton!= null) {
                Integer ButtonWidthLandscape = getResources().getDimensionPixelSize(R.dimen.button_width_landscape);
                Integer ButtonHeightLandscape = getResources().getDimensionPixelSize(R.dimen.button_height_landscape);
                mButton.setWidth(ButtonWidthLandscape);
                mButton.setHeight(ButtonHeightLandscape);
            }
        }
    }

the result is that the buttons looks with the same size exactly. I've also tried to get the dimension:

int dimenHeightPortrait = (int) (getResources().getDimension(R.dimen.start_button_height_portrait) / getResources().getDisplayMetrics().density)

and so on.. but the same result.

I update mScreenOrientation in the base method onConfigurationChanged:

if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
    mScreenOrientation = Configuration.ORIENTATION_PORTRAIT;
}
else if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
    mScreenOrientation = Configuration.ORIENTATION_LANDSCAPE;
}

Here's my full dimens file:

<resources>
    <dimen name="activity_horizontal_margin">16dp</dimen>
    <dimen name="activity_vertical_margin">16dp</dimen>
    <dimen name="nav_header_vertical_spacing">16dp</dimen>
    <dimen name="nav_header_height">160dp</dimen>
    <dimen name="fab_margin">16dp</dimen>
    <dimen name="star_text_size">26sp</dimen>
    <dimen name="toast_save_text_size">34sp</dimen>
    <dimen name="toast_image_height">50dp</dimen>
    <dimen name="toast_image_width">50dp</dimen>
    <dimen name="space_between_touch_views">10dp</dimen>
    <dimen name="button_moretext_size">20sp</dimen>
    <dimen name="button_get_text_size">20sp</dimen>
    <dimen name="key_corner_radius">3dp</dimen>
    <dimen name="key_top_inset">3dp</dimen>
    <dimen name="key_bottom_inset">3dp</dimen>
    <dimen name="key_right_inset">2.5dp</dimen>
    <dimen name="key_left_inset">2.5dp</dimen>
    <dimen name="title_text_size">11sp</dimen>


    <dimen name="button_height_portrait">180dp</dimen>
    <dimen name="button_width_portrait">180dp</dimen>
    <dimen name="button_height_landscape">60dp</dimen>
    <dimen name="button_width_landscape">60dp</dimen>
</resources>

Answer 1

Succeeded!

I don't know why setWidth and setHeight didn't work but this works (so if someone got this problem too, then just replace the two lines of the setWidth and setHeight with these next lines and do the same for the portrait) :

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
params.width = ButtonWidthLandscape;
params.height = ButtonHeightLandscape;
mButton.setLayoutParams(params);