library/src/main/java/com/arlib/floatingsearchview/FloatingSearchView.java
public void setMenuIconProgress(float progress) {
        mMenuBtnDrawable.setProgress(progress);
        if (progress == 0) {
            closeMenu(false);
        } else if (progress == 1.0) {
            openMenu(false);
        }
    }
public void setMenuIconProgress(float progress) {
        mMenuBtnDrawable.setProgress(progress);
        if (progress == 0) {
            closeMenu(false);
        } else if (progress == 1.0) {
            openMenu(false);
        }
    }
<p/>
Enables clients to directly manipulate
the menu icon's progress.
<p/>
Useful for custom animation/behaviors.

@param progress the desired progress of the menu
icon's rotation: 0.0 == hamburger
shape, 1.0 == back arrow shape