library/src/main/java/de/mrapp/android/view/FloatingActionButton.java
private void adaptImageButtonSize() {
        int pixelSize = getPixelSize();
        LayoutParams layoutParams = (LayoutParams) imageButton.getLayoutParams();
        layoutParams.width = pixelSize;
        layoutParams.height = pixelSize;
        imageButton.setLayoutParams(layoutParams);
        imageButton.requestLayout();
    }
private void adaptImageButtonSize() {
        int pixelSize = getPixelSize();
        LayoutParams layoutParams = (LayoutParams) imageButton.getLayoutParams();
        layoutParams.width = pixelSize;
        layoutParams.height = pixelSize;
        imageButton.setLayoutParams(layoutParams);
        imageButton.requestLayout();
    }
Adapts the size of the image button, which is used to show the floating image button's
background and icon, depending on the floating button's size.