clans FAB library usage

旋转 fab icon

java

    private FloatingActionMenu menuYellow; // start
    // oncreate
    menuYellow = (FloatingActionMenu) view.findViewById(R.id.menu_yellow);

        menuYellow.setOnMenuToggleListener(new FloatingActionMenu.OnMenuToggleListener() {
            @Override
            public void onMenuToggle(boolean opened) {
                String text;
                if (opened) {
                    text = "Menu opened";
                } else {
                    text = "Menu closed";
                }
                Toast.makeText(getActivity(), text, Toast.LENGTH_SHORT).show();
            }
        });

layout

styles

fab_label_background.xml

切换 icon

layout

java

    private FloatingActionMenu menuGreen; // start
    // oncreate
    menuGreen = (FloatingActionMenu) view.findViewById(R.id.menu_green);
    createCustomAnimation();
    // after oncreate
    private void createCustomAnimation() {
        AnimatorSet set = new AnimatorSet();

        ObjectAnimator scaleOutX = ObjectAnimator.ofFloat(menuGreen.getMenuIconView(), "scaleX", 1.0f, 0.2f);
        ObjectAnimator scaleOutY = ObjectAnimator.ofFloat(menuGreen.getMenuIconView(), "scaleY", 1.0f, 0.2f);

        ObjectAnimator scaleInX = ObjectAnimator.ofFloat(menuGreen.getMenuIconView(), "scaleX", 0.2f, 1.0f);
        ObjectAnimator scaleInY = ObjectAnimator.ofFloat(menuGreen.getMenuIconView(), "scaleY", 0.2f, 1.0f);

        scaleOutX.setDuration(50);
        scaleOutY.setDuration(50);

        scaleInX.setDuration(150);
        scaleInY.setDuration(150);

        scaleInX.addListener(new AnimatorListenerAdapter() {
            @Override
            public void onAnimationStart(Animator animation) {
                menuGreen.getMenuIconView().setImageResource(menuGreen.isOpened()
                        ? R.drawable.ic_close : R.drawable.ic_star);
            }
        });

        set.play(scaleOutX).with(scaleOutY);
        set.play(scaleInX).with(scaleInY).after(scaleOutX);
        set.setInterpolator(new OvershootInterpolator(2));

        menuGreen.setIconToggleAnimatorSet(set);
    }

上滑消失，下滑恢复

layout

java

        final FloatingActionButton fab = (FloatingActionButton) view.findViewById(R.id.fab);
        recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                if (Math.abs(dy) > mScrollOffset) {
                    if (dy > 0) {
                        fab.hide(true);
                    } else {
                        fab.show(true);
                    }
                }
            }
        });