Viewpager+fragment

xml布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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.www.MainActivity">

    <android.support.v4.view.ViewPager
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/vip"/>
</LinearLayout>

然后在写三个fragment布局，加载fragment适配器，最后在main界面进行关联：

public class FragAdapter extends FragmentPagerAdapter {
    private List<Fragment> mFragments;

    public FragAdapter(FragmentManager fm, List<Fragment> fragments) {
        super(fm);
        // TODO Auto-generated constructor stub
        mFragments=fragments;
    }

    @Override
    public Fragment getItem(int arg0) {
        // TODO Auto-generated method stub
        return mFragments.get(arg0);
    }

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

}

Main

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //构造适配器
        List<Fragment> fragments=new ArrayList<Fragment>();
        fragments.add(new Fragment1());
        fragments.add(new Fragment2());
        fragments.add(new Fragment3());
        FragAdapter adapter = new FragAdapter(getSupportFragmentManager(), fragments);

        //设定适配器
        ViewPager vp = (ViewPager)findViewById(R.id.vip);
        vp.setAdapter(adapter);
    }

}