1. 程式人生 > >TabLayout+ViewPager+Fragment實現底部導航

TabLayout+ViewPager+Fragment實現底部導航

MainActivity extends AppCompatActivity { private TabLayout mTabLayout; //Tab 文字 private final int[] TAB_TITLES = new int[]{R.string.weixin,R.string.contacts,R.string.find,R.string.me}; //Tab 圖片 private final int[] TAB_IMGS = new int[]{R.drawable.tab_weixin_selector,R.drawable.tab_contacts_selector,R.drawable.tab_find_selector
,R.drawable.tab_me_selector}; //Fragment 陣列 private final Fragment[] TAB_FRAGMENTS = new Fragment[] {new WeiXinFragment(),new ContactsFragment(),new FindFragment(),new MeFragment()}; //Tab 數目 private final int COUNT = TAB_TITLES.length; private MyViewPagerAdapter mAdapter; private ViewPager mViewPager
; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initViews(); } private void initViews() { mTabLayout = (TabLayout)findViewById(R.id.tablayout); setTabs(mTabLayout,this.getLayoutInflater(),
TAB_TITLES,TAB_IMGS); mAdapter = new MyViewPagerAdapter(getSupportFragmentManager()); mViewPager = (ViewPager) findViewById(R.id.viewpager); mViewPager.setAdapter(mAdapter); mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(mTabLayout)); mTabLayout.setOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(mViewPager)); } /** * @description: 設定新增Tab */ private void setTabs(TabLayout tabLayout,LayoutInflater inflater,int[] tabTitlees,int[] tabImgs){ for (int i = 0; i < tabImgs.length; i++) { TabLayout.Tab tab = tabLayout.newTab(); View view = inflater.inflate(R.layout.tab_custom,null); tab.setCustomView(view); TextView tvTitle = (TextView)view.findViewById(R.id.tv_tab); tvTitle.setText(tabTitlees[i]); ImageView imgTab = (ImageView) view.findViewById(R.id.img_tab); imgTab.setImageResource(tabImgs[i]); tabLayout.addTab(tab); } } /** * @description: ViewPager 介面卡 */ private class MyViewPagerAdapter extends FragmentPagerAdapter { public MyViewPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { return TAB_FRAGMENTS[position]; } @Override public int getCount() { return COUNT; } } }