ikun03

public class SoftInputAssist {
    private View rootView;
    private ViewGroup contentContainer;
    private ViewTreeObserver viewTreeObserver;
    private ViewTreeObserver.OnGlobalLayoutListener listener = () -> possiblyResizeChildOfContent();
    private Rect contentAreaOfWindowBounds = new Rect();
    private FrameLayout.LayoutParams rootViewLayout;
    private int usableHeightPrevious = 0;

    public SoftInputAssist(Activity activity) {