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androidandroid-actionbar

What is the size of ActionBar in pixels?

I need to know the exact size of ActionBar in pixels so to apply correct background image.

Solution

  • To retrieve the height of the ActionBar in XML, just use

    ?android:attr/actionBarSize

    or if you're an ActionBarSherlock or AppCompat user, use this

    ?attr/actionBarSize

    If you need this value at runtime, use this

    final TypedArray styledAttributes = getContext().getTheme().obtainStyledAttributes(
                    new int[] { android.R.attr.actionBarSize });
mActionBarSize = (int) styledAttributes.getDimension(0, 0);
styledAttributes.recycle();

    If you need to understand where this is defined:

    1. The attribute name itself is defined in the platform's /res/values/attrs.xml
    2. The platform's themes.xml picks this attribute and assigns a value to it.
    3. The value assigned in step 2 depends on different device sizes, which are defined in various dimens.xml files in the platform, ie. core/res/res/values-sw600dp/dimens.xml