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：

1. mBottomNavigationBar = (BottomNavigationBar) view.findViewById(R.id.bottom_navigation_bar); 
2. mBottomNavigationBar.setBackgroundStyle(BottomNavigationBar.BACKGROUND_STYLE_STATIC); 
3. mBottomNavigationBar.setMode(BottomNavigationBar.MODE_FIXED); 
4.  
5. 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)) 
6.         .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)) 
7.         .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)) 
8.         .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)) 
9.         .setFirstSelectedPosition(0) 
10.         .initialise(); 
11.  
12. mBottomNavigationBar.setTabSelectedListener(this); 
13.  
14. setDefaultFragment(); 

Tab的切换：

1. @Override 
2.     public void onTabSelected(int position) { 
3.         FragmentTransaction beginTransaction = getFragmentManager().beginTransaction(); 
4.  
5.         switch (position) { 
6.             case 0: 
7.                 if (mHomeFragment == null) { 
8.                     mHomeFragment = HomeFragment.newInstance(getString(R.string.item_home)); 
9.                 } 
10.                 beginTransaction.replace(R.id.sub_content, mHomeFragment); 
11.                 break; 
12.             case 1: 
13.                 if (mLocationFragment == null) { 
14.                     mLocationFragment = LocationFragment.newInstance(getString(R.string.item_location)); 
15.                 } 
16.                 beginTransaction.replace(R.id.sub_content, mLocationFragment); 
17.                 break; 
18.             case 2: 
19.                 if (mLikeFragment == null) { 
20.                     mLikeFragment = LikeFragment.newInstance(getString(R.string.item_like)); 
21.                 } 
22.                 beginTransaction.replace(R.id.sub_content, mLikeFragment); 
23.                 break; 
24.             case 3: 
25.                 if (mPersonFragment == null) { 
26.                     mPersonFragment = PersonFragment.newInstance(getString(R.string.item_person)); 
27.                 } 
28.                 beginTransaction.replace(R.id.sub_content, mPersonFragment); 
29.         } 
30.         beginTransaction.commit(); 
31.  
32.     }  

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。