ViewPager,RadioGroup,FragmentManager 详解 <三> Fragment，ViewPager 和PagerTabStrip

0：首先创建Fragment，

1：创建布局,注意了 PagerTabStrip 是在ViewPager 里面的，而且PagerTabStrip 必须要是全路劲

<?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:layout_width="match_parent"  android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"  android:paddingRight="@dimen/activity_horizontal_margin"  android:paddingTop="@dimen/activity_vertical_margin"  android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

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

2：创建adapter，这个里面 在getPagerTitle 进行Title的设置

package tech.androidstudio.pagetabstripdemo;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

import java.util.List;

/**  * Created by Kodulf on 2016/3/14.  */ public class PagerTabStripFragmentPagerAdapter extends FragmentPagerAdapter {
    List<Fragment> list;

    public PagerTabStripFragmentPagerAdapter(FragmentManager fm, List<Fragment> list) {
        super(fm);
        this.list = list;
    }

    @Override
    public Fragment getItem(int position) {
        return list.get(position);
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public CharSequence getPageTitle(int position) {
// return super.getPageTitle(position);  String ret;
        switch (position){
            case 0:
                ret="财经";
                break;
            case 1:
                ret="体育";
                break;
            case 2:
                ret="娱乐";
                break;
            default:
                ret="未命名";
                break;
        }
        return ret;
    }
}

3：MainActivity 里面只要进行简单的正常的设置就可以了，非常简单。

package tech.androidstudio.pagetabstripdemo;

import android.support.v4.app.Fragment;
import android.support.v4.view.PagerTabStrip;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import java.util.ArrayList;
import java.util.List;

import tech.androidstudio.pagetabstripdemo.adapter.SlideTabFragmentPagerAdapter;

public class MainActivity extends AppCompatActivity {

    private ViewPager mViewPager;
    private List<Fragment> mList;
    private PagerTabStrip mPagerTabStrip;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mList = new ArrayList<Fragment>();
        mList.add(new FirstFragment());
        mList.add(new SecondFragment());
        mList.add(new ThirdFragment());

        mViewPager = (ViewPager) findViewById(R.id.viewpage);

        PagerTabStripFragmentPagerAdapter adapter = new PagerTabStripFragmentPagerAdapter(getSupportFragmentManager(), mList);
        mViewPager.setAdapter(adapter);
    }
}