啦啦啦——终极模拟 fl+rg , tab+vp , pull+""

/** * 考点： * ViewPager + Fragment切换 * HttpURLConnection 数据加载 * imageLoader 图片展示（线程池，圆角，缓存目录） * 数据分页 （page ++） * * 另：js与native交互 *      自定义view */
MainActivity 

import android.os.Bundle;import android.support.annotation.IdRes;import android.support.v4.app.Fragment;import android.support.v4.widget.DrawerLayout;import android.support.v7.app.AppCompatActivity;import android.widget.FrameLayout;import android.widget.ImageView;import android.widget.RadioGroup;import java.util.ArrayList;import java.util.List;/** * 考点： * ViewPager + Fragment切换 * HttpURLConnection 数据加载 * imageLoader 图片展示（线程池，圆角，缓存目录） * 数据分页 （page ++） * * 另：js与native交互 *      自定义view */public class MainActivity extends AppCompatActivity {    //RadioButton+Fragment实现页面主布局    private FrameLayout fl;    List<Fragment> fal = new ArrayList<>();    private android.support.v4.app.FragmentManager manager;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        fl = findViewById(R.id.fl);        DrawerLayout drawer = findViewById(R.id.drawer);        RadioGroup rg = findViewById(R.id.rg);        initFragment();        manager = getSupportFragmentManager();        this.manager.beginTransaction().add(R.id.fl, fal.get(0)).commit();        rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {            @Override            public void onCheckedChanged(RadioGroup radioGroup, @IdRes int i) {                switch (i) {                    case R.id.rb1:                        MainActivity.this.manager.beginTransaction().replace(R.id.fl,fal.get(0)).commit();                        break;                    case R.id.rb2:                        MainActivity.this.manager.beginTransaction().replace(R.id.fl,fal.get(1)).commit();                        break;                    case R.id.rb3:                        MainActivity.this.manager.beginTransaction().replace(R.id.fl,fal.get(2)).commit();                        break;                    case R.id.rb4:                        MainActivity.this.manager.beginTransaction().replace(R.id.fl,fal.get(3)).commit();                        break;                }            }        });        drawer = (DrawerLayout) findViewById(R.id.drawer);        ImageView img = (ImageView) findViewById(R.id.img);        //  getActivity(). getSupportFragmentManager().beginTransaction().replace(R.id.f1,mFragment).commit();        //关闭drawer        drawer.closeDrawer(img);    }    private void initFragment() {        F1 f1 = new F1();        F2 f2 = new F2();        F2 f3 = new F2();        F2 f4 =  new F2();        fal.add(f1);        fal.add(f2);        fal.add(f3);        fal.add(f4);    }}

F1 :

import android.content.Context;import android.os.Bundle;import android.support.annotation.Nullable;import android.support.design.widget.TabLayout;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentPagerAdapter;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;public class F1 extends Fragment {    //首页面使用tabLayout+viewPager实现。其它导航页面，内容自定义。    private TabLayout f1_tab;    private ViewPager f1_vp;    private List<Fragment> fal;    private List<String> list = new ArrayList<String>();    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {        View view = inflater.inflate(R.layout.f1, container, false);        f1_tab = view.findViewById(R.id.f1_tab);        f1_vp = view.findViewById(R.id.f1_vp);        return view;    }    @Override    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {        super.onViewCreated(view, savedInstanceState);        initData();        MyFragPageAdapter adapter = new MyFragPageAdapter(getChildFragmentManager());        f1_vp.setAdapter(adapter);        // setupWithViewPager必须在ViewPager.setAdapter()之后调用        // 具体原因查看源码        f1_tab.setupWithViewPager(f1_vp);    }    private void initData() {        fal = new ArrayList<>();        F01 f01 = new F01();        F02 f02 = new F02();        F02 f03 = new F02();        F02 f04 =  new F02();        fal.add(f01);        fal.add(f02);        fal.add(f03);        fal.add(f04);    }    class MyFragPageAdapter extends FragmentPagerAdapter {        private int pages = 4;        private Context context;        private String[] datas = {"推荐", "课程", "实战", "职业路径"};        //构造必须一个FragmentManager管理器,注意也是v4里的        public MyFragPageAdapter(android.support.v4.app.FragmentManager fm) {            super(fm);        }        @Override        public int getCount() {            return pages;        }        @Override        public Fragment getItem(int position) {            return fal.get(position);        }        @Override        public CharSequence getPageTitle(int position) {            return datas[position];        }    }}

F01 :
import android.os.AsyncTask;import android.os.Bundle;import android.support.annotation.Nullable;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.ListView;import android.widget.TextView;import com.google.gson.Gson;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshListView;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.ArrayList;import java.util.List;/** * author:Created by WangZhiQiang on 2017/11/21. */public class F01 extends Fragment {    //推荐页面中最上方实现viewPager的无限自动轮播，下方实现列表，可进行上拉加载，下拉刷新的效果。//（要求使用pullToRefreshScrollView）图中红框部分的内容不要求实现。    List<JavaBean.DataBean> mylist = new ArrayList<>();    private PullToRefreshListView f01_pull;    String baseUrl = "http://www.yulin520.com/a2a/impressApi/news/mergeList?pageSize=10&page=";    //private ArrayAdapter<String> arrayAdapter;    private int page = 1;    private MyItemAdapter myadapter;    private ListView lv;    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {        View view = inflater.inflate(R.layout.f01, container, false);        f01_pull = view.findViewById(R.id.f01_pull);        return view;    }    @Override    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {        super.onViewCreated(view, savedInstanceState);//页面中最上方实现viewPager的无限自动轮播        lv = f01_pull.getRefreshableView();        myadapter = new MyItemAdapter();        lv.setAdapter(myadapter);        f01_pull.setMode(PullToRefreshBase.Mode.BOTH);        f01_pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {            @Override            public void onPullDownToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {                mylist.clear();                getNetData(1);            }            @Override            public void onPullUpToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {                getNetData(page++);            }        });        getNetData(1);//请求listview接口数据    }    private void getNetData(int page) {        new MAsyncTask().execute(baseUrl + page);    }    class MyItemAdapter extends BaseAdapter {        @Override        public int getCount() {            return mylist.size();        }        @Override        public Object getItem(int i) {            return mylist.get(i);        }        @Override        public long getItemId(int i) {            return i;        }        @Override        public View getView(int i, View view, ViewGroup viewGroup) {            if (mylist.get(i).getImg() != null) {                View view1 = View.inflate(getActivity(), R.layout.item1, null);                TextView tv = view1.findViewById(R.id.item_tv);                ImageView img = view1.findViewById(R.id.item_img);                tv.setText(mylist.get(i).getTitle());//调用显示图片                ImageLoader instance = ImageLoader.getInstance();                instance.displayImage(mylist.get(i).getImg(), img);                return view1;            } else {                View view2 = View.inflate(getActivity(), R.layout.item2, null);                TextView tv = view2.findViewById(R.id.item_tv2);                tv.setText(mylist.get(i).getTitle());                return view2;            }        }    }    class MAsyncTask extends AsyncTask<String, Void, String> {        @Override        protected String doInBackground(String... strings) {            return NetUtils.getNetJson(strings[0]);        }        @Override        protected void onPostExecute(String s) {            super.onPostExecute(s);            Gson gson = new Gson();            JavaBean product = gson.fromJson(s, JavaBean.class);            List<JavaBean.DataBean> datas = product.getData();            mylist.addAll(datas);            myadapter.notifyDataSetChanged();            f01_pull.onRefreshComplete();        }    }}