Android中TabLayout结合ViewPager实现页面切换效果

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 tools:context="com.example.cxk.myapplication.MainActivity">

 <android.support.design.widget.TabLayout
  android:id="@+id/tablayout"
  android:layout_width="match_parent"
  android:layout_height="48dp"
  android:background="#1FBCD2"
  app:tabTextAppearance="@style/MyTabLayoutTextAppearance"
  app:tabIndicatorColor="@color/white"
  app:tabSelectedTextColor="@color/white"
  app:tabTextColor="@color/ripple_material_dark"
  app:tabIndicatorHeight="2dp" />

 <android.support.v4.view.ViewPager
  android:id="@+id/viewpager"
  android:layout_width="fill_parent"
  android:layout_height="match_parent"
  android:layout_below="@+id/tablayout"
  android:layout_weight="1" />

</RelativeLayout>

 <style name="MyTabLayoutTextAppearance" parent="TextAppearance.AppCompat.Widget.ActionBar.Title">
  <item name="android:textSize">16sp</item>
 </style>

public class MainActivity extends FragmentActivity {
 private TabLayout tablayout;
 private ViewPager viewpager;
 private List<Fragment> list;
 private FragmentManager manager;
 private FragmentTransaction transtion;
 private MyFragmentPageAdapter adapter;
 private List<String> titles;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  //先findID
  tablayout = (TabLayout) this.findViewById(R.id.tablayout);
  viewpager = (ViewPager) this.findViewById(R.id.viewpager);
  //将各个标题装在titles里面
  titles = new ArrayList<String>();
  titles.add("第一个");
  titles.add("第二个");
  //将两个Fragment装进集合中
  list = new ArrayList<Fragment>();
  Fragment1 f1 = new Fragment1();
  Fragment2 f2 = new Fragment2();
  list.add(f1);
  list.add(f2);
  //使用manager和transtion提交事务后为viewpager设置一个适配器
  manager = getSupportFragmentManager();
  adapter = new MyFragmentPageAdapter(manager);
  transtion = manager.beginTransaction();
  transtion.commit();
  viewpager.setAdapter(adapter);
  // tablayout.addTab可以将标题添加进Tab里面，true表示默认选中
  tablayout.addTab(tablayout.newTab().setText(titles.get(0)), true);
  tablayout.addTab(tablayout.newTab().setText(titles.get(1)), false);
  //这两个方法是将Tablayout和Viewpager联合起来
  tablayout.setupWithViewPager(viewpager);
  tablayout.setTabsFromPagerAdapter(adapter);
 }

 // 定义一个适配器给ViewPager
 class MyFragmentPageAdapter extends FragmentPagerAdapter {

  public MyFragmentPageAdapter(FragmentManager fm) {
   super(fm);
   // TODO Auto-generated constructor stub
  }

  @Override
  public android.support.v4.app.Fragment getItem(int arg0) {
   // TODO Auto-generated method stub
   return list.get(arg0);
  }

  @Override
  public CharSequence getPageTitle(int position) {
   return titles.get(position);
  }

  @Override
  public int getCount() {
   // TODO Auto-generated method stub
   return list.size();
  }

  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
   // TODO Auto-generated method stub
    super.destroyItem(container, position, object);
  }

 }
}