Tablayout

xml中

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_zhuye"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.bwie.yuekaomoni.ZhuyeActivity">
    <android.support.design.widget.TabLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/tablayout">
    </android.support.design.widget.TabLayout>
    <android.support.v4.view.ViewPager
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/viewpager" />
</LinearLayout>

MainActivtiy中

public class ZhuyeActivity extends AppCompatActivity{
    private TabLayout tabLayout;
    private ViewPager viewPager;
    private FragmentAdapter fragmentAdapter;
    private ArrayList<Fragment> fragments;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_zhuye);
            tabLayout= (TabLayout) findViewById(R.id.tablayout);
            viewPager= (ViewPager) findViewById(R.id.viewpager);
        fragments=new ArrayList<Fragment>();
        FragmentOne fragment1 = new FragmentOne();
        FragmentTwo fragment2 = new FragmentTwo();
        FragmentThree fragment3 = new FragmentThree();
        FragmentFour fragment4 = new FragmentFour();

        fragments.add(fragment1);
        fragments.add(fragment2);
        fragments.add(fragment3);
        fragments.add(fragment4);
        fragmentAdapter = new FragmentAdapter(getSupportFragmentManager(),fragments);
        viewPager.setAdapter(fragmentAdapter);
        tabLayout.setupWithViewPager(viewPager);
    }
}

建四个fragment和xml