Android底部导航栏实现（一）之BottomNavigationBar

BottomNavigationBar这个控件的使用之前已经写过，这里不再赘述，详情请参考BottomNavigationBar的使用。

下面直接上代码：

初始化及相关设置：

        mBottomNavigationBar = (BottomNavigationBar) view.findViewById(R.id.bottom_navigation_bar);
        mBottomNavigationBar.setBackgroundStyle(BottomNavigationBar.BACKGROUND_STYLE_STATIC);
        mBottomNavigationBar.setMode(BottomNavigationBar.MODE_FIXED);

        mBottomNavigationBar.addItem(new BottomNavigationItem(R.drawable.home_fill, getString(R.string.item_home)).setInactiveIconResource(R.drawable.home).setActiveColorResource(R.color.colorPrimary).setInActiveColorResource(R.color.black_1))
                .addItem(new BottomNavigationItem(R.drawable.location_fill, getString(R.string.item_location)).setInactiveIconResource(R.drawable.location).setActiveColorResource(R.color.colorPrimary).setInActiveColorResource(R.color.black_1))
                .addItem(new BottomNavigationItem(R.drawable.like_fill, getString(R.string.item_like)).setInactiveIconResource(R.drawable.like).setActiveColorResource(R.color.colorPrimary).setInActiveColorResource(R.color.black_1))
                .addItem(new BottomNavigationItem(R.drawable.person_fill, getString(R.string.item_person)).setInactiveIconResource(R.drawable.person).setActiveColorResource(R.color.colorPrimary).setInActiveColorResource(R.color.black_1))
                .setFirstSelectedPosition(0)
                .initialise();

        mBottomNavigationBar.setTabSelectedListener(this);

        setDefaultFragment();

Tab的切换：

    @Override
    public void onTabSelected(int position) {
        FragmentTransaction beginTransaction = getFragmentManager().beginTransaction();

        switch (position) {
            case 0:
                if (mHomeFragment == null) {
                    mHomeFragment = HomeFragment.newInstance(getString(R.string.item_home));
                }
                beginTransaction.replace(R.id.sub_content, mHomeFragment);
                break;
            case 1:
                if (mLocationFragment == null) {
                    mLocationFragment = LocationFragment.newInstance(getString(R.string.item_location));
                }
                beginTransaction.replace(R.id.sub_content, mLocationFragment);
                break;
            case 2:
                if (mLikeFragment == null) {
                    mLikeFragment = LikeFragment.newInstance(getString(R.string.item_like));
                }
                beginTransaction.replace(R.id.sub_content, mLikeFragment);
                break;
            case 3:
                if (mPersonFragment == null) {
                    mPersonFragment = PersonFragment.newInstance(getString(R.string.item_person));
                }
                beginTransaction.replace(R.id.sub_content, mPersonFragment);
        }
        beginTransaction.commit();

    }

说明：这几篇文章没有过多的文字叙述，因为这些东西也不是很难，而且都是常用的，相信很多人都了如指掌了，多说亦是废话，直接上代码看的反而更清楚。

DownLoad Demo