import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.support.annotation.IdRes;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.RadioGroup;

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

import 
 
l.framgsradiogroupviewpager.Framgs.framg1;
import l.framgsradiogroupviewpager.Framgs.framg2;
import l.framgsradiogroupviewpager.Framgs.framg3;
//首先建立fragment在MainActivity中和RadioGroup一起使用,之後再第一個Fragment中 佈局ViewPaegr再ViewPager總新增Fragment,在佈局ListView新增介面卡即可,
//fragment中巢狀子fragment要用getChildFragmentManager()
 
public class MainActivity extends AppCompatActivity {
    private RadioGroup rg;
    private android.support.v4.app.FragmentManager supportFragmentManager;
    private android.support.v4.app.FragmentTransaction fragmentTransaction;
    private framg1 f1;


    private framg2 f2;
    private framg3 f3
 
;
    private List<Fragment> list = new ArrayList<Fragment>();
    @Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //獲取控制元件
rg = (RadioGroup) findViewById(R.id.rg);
        //獲取管理者
supportFragmentManager = getSupportFragmentManager();
        //開啟事務
fragmentTransaction = supportFragmentManager.beginTransaction();
        //例項化碎片
f1 = new framg1();
        //預設一個頁面
fragmentTransaction.add(R.id.fl, f1).commit();
        //獲取點選事件
rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
public void onCheckedChanged(RadioGroup radioGroup, @IdRes int i) {
                //隱藏所用的Frangment
hideFrag();
                //在獲取一個開啟事務
android.support.v4.app.FragmentTransaction fragmentTransaction = supportFragmentManager.beginTransaction();
                switch (i) {
                    case R.id.rb:
                        fragmentTransaction.show(f1).commit();
                        break;
                    case R.id.rb1:
                        //如果等於空
if (f2 == null) {
                            f2 = new framg2();//例項化一個Frang2
fragmentTransaction.add(R.id.fl, f2).commit();//添加布局裡
} else {
                            fragmentTransaction.show(f2).commit();//有的話就show
}
                        break;
                    case R.id.rb2:
                        if (f3 == null) {
                            f3 = new framg3();
                            fragmentTransaction.add(R.id.fl, f3).commit();
                        } else {
                            fragmentTransaction.show(f3).commit();
                        }
                        break;
                }
            }
        });
    }

    //隱藏所用的Frangment
private void hideFrag() {
        //在獲取一個開啟事務
android.support.v4.app.FragmentTransaction fragmentTransaction = supportFragmentManager.beginTransaction();
        //不等於空或者是否新增
if (f1 != null && f1.isAdded()) {
            fragmentTransaction.hide(f1);//隱藏
}
        //不等於空或者是否新增
if (f2 != null && f2.isAdded()) {
            fragmentTransaction.hide(f2);//隱藏
}
        if (f3 != null && f3.isAdded()) {
            fragmentTransaction.hide(f3);
        }
        fragmentTransaction.commit();
    }


}

1. //在第一個Fragment中新增Viewpager,載入多個Fragment

package l.framgsradiogroupviewpager.Framgs;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

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

import l.framgsradiogroupviewpager.R;

/**
 * Created by lenovo on 2017/11/9.
 */
public class framg1 extends Fragment {

    private ViewPager vp;
    List<Fragment> fragmentlist=new ArrayList<>();

    //只寫載入佈局和找到控制元件
@Nullable
    @Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View inflate = inflater.inflate(R.layout.f1, container, false);
        return inflate;
    }
    /**
     * 寫fragment的邏輯；
     * @param view
* @param savedInstanceState
*/
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
         //集合資料
getlist();

        vp = (ViewPager)view.findViewById(R.id.vp);
         //fragment中巢狀子fragment要用getChildFragmentManager()
Myadapter my=new Myadapter(getChildFragmentManager());

        vp.setAdapter(my);

    }
    private void getlist() {
        charfrang1 c1=new charfrang1();
        charfrang2 c2=new charfrang2();

        fragmentlist.add(c1);
        fragmentlist.add(c2);

    }
    class Myadapter extends FragmentPagerAdapter{


        public Myadapter(FragmentManager fm) {
            super(fm);
        }

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

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