TabLayout的使用

依赖 design：26.0.0包
MainActivity 类

public class MainActivity extends FragmentActivity {    private List<Fragment> fragmentList = new ArrayList<>();    private ViewPager viewPager;    private TabLayout tabLayout;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initData();        //第一步：初始化ViewPager并设置adapter        viewPager = (ViewPager) findViewById(R.id.homefragment_vp);        viewPager.setAdapter(new MyViewPagerAdapter(getSupportFragmentManager(), fragmentList));        //第二步：初始化Tablayout，给ViewPager设置标题（选项卡）        tabLayout = (TabLayout) findViewById(R.id.homefragment_tablelayouts);        tabLayout.addTab(tabLayout.newTab().setText("周一"));//添加tab选项卡        tabLayout.addTab(tabLayout.newTab().setText("周二"));        tabLayout.addTab(tabLayout.newTab().setText("周三"));        tabLayout.addTab(tabLayout.newTab().setText("周四"));        tabLayout.addTab(tabLayout.newTab().setText("周五"));        tabLayout.addTab(tabLayout.newTab().setText("昨天"));        tabLayout.addTab(tabLayout.newTab().setText("今天"));        //第三步：关联ViewPager        tabLayout.setupWithViewPager(viewPager);        //在关联ViewPager之后添加如下代码，前三步不用更改        tabLayout.getTabAt(0).setText("周一");        tabLayout.getTabAt(1).setText("周二");        tabLayout.getTabAt(2).setText("周三");        tabLayout.getTabAt(3).setText("周四");        tabLayout.getTabAt(4).setText("周五");        tabLayout.getTabAt(5).setText("昨天");        tabLayout.getTabAt(6).setText("今天");    }    private void initData() {        fragmentList.add(new PagerFragment1());        fragmentList.add(new PagerFragment2());        fragmentList.add(new PagerFragment3());        fragmentList.add(new PagerFragment4());        fragmentList.add(new PagerFragment5());        fragmentList.add(new PagerFragment6());        fragmentList.add(new PagerFragment7());    }}

适配器:
public class MyViewPagerAdapter extends FragmentPagerAdapter{

private final List<Fragment> fragmentList;public MyViewPagerAdapter(FragmentManager fm, List<Fragment> fragmentList) {    super(fm);    this.fragmentList=fragmentList;}@Overridepublic Fragment getItem(int position) {    return fragmentList.get(position);}@Overridepublic int getCount() {    return fragmentList.size();}

}
别忘了写Fragment

布局：

 <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        >        <android.support.design.widget.TabLayout            android:id="@+id/homefragment_tablelayouts"            android:layout_width="0dp"            android:layout_height="30dp"            app:tabIndicatorHeight="2dp"            android:layout_weight="1"            app:tabSelectedTextColor="#000000"            app:tabMode="scrollable"            >        </android.support.design.widget.TabLayout>    </LinearLayout>    <android.support.v4.view.ViewPager        android:layout_weight="1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/homefragment_vp"        ></android.support.v4.view.ViewPager>