模拟项目

      <!=======abstract 一定要写============BeasActivity=================!>

public abstract class BeasActivity  extends AppCompatActivity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
         setContentView(intLayout());
         intView();
         intData();
    }
    protected abstract void intView();
    protected abstract void intData();

    protected abstract int  intLayout();
}



    <!======abstract 一定要写============ BeasFragment===============!>



public abstract class BeasFragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(intlayout(), container, false);
        intView();
        intData();
        return  view;
    }
    protected abstract void intView();
    protected abstract void intData();

    protected abstract int intlayout();
}

                <!===================App=================!>


public class App  extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
      String path=Environment.getExternalStorageDirectory().getPath()+"/imger";
        File file = new File(path);

        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration
                .Builder(this)
                .memoryCacheExtraOptions(200,200)
                .memoryCacheSize(2*1024*1024)
                .threadPoolSize(3).threadPriority(1000)
                .diskCache(new UnlimitedDiskCache(file)).diskCacheFileCount(50)
               .diskCacheFileNameGenerator(new Md5FileNameGenerator()).diskCacheSize(50*1024*1024)
                .build();
        ImageLoader.getInstance().init(configuration);


    }
}

           <!===================首页倒计时轮播图=================!>



public class MainActivity extends AppCompatActivity {

    private Banner banner;
    private TextView time;
    private  int i=5;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        banner = findViewById(R.id.banner);
        time = findViewById(R.id.time);
        List<String> list = new ArrayList<>();
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151721118&di=649c9a43aed72fbc4d99ec1a031510c6&imgtype=0&src=http%3A%2F%2Fimg.zcool.cn%2Fcommunity%2F015c7d574b9f8f6ac72525aee98351.jpg");
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151956771&di=0eb6f306991d24b67a13ceb336f80102&imgtype=0&src=http%3A%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F00613def3f1beb7a35ae136341be2b589bc46a2d.jpg_320x200.jpg");
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151847685&di=c7a4b5d08ec43fa629bcb690039a7629&imgtype=0&src=http%3A%2F%2Fattimg.dospy.com%2Fimg%2Fday_080625%2F20080625_2e91a10c444877e88827vri2ZKdGMvQo.jpg");
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151825129&di=70bf74b87d8a15cb91a2d79f15ed0eaf&imgtype=0&src=http%3A%2F%2Fattimg.dospy.com%2Fimg%2Fday_081016%2F20081016_fee215664d5740e56c13E2YB8giERFEX.jpg");
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505746504&di=930c4d677a02328a142d6fa85ed14580&imgtype=jpg&er=1&src=http%3A%2F%2Fattimg.dospy.com%2Fimg%2Fday_090113%2F20090113_6ac58b42bea94f0b318e1B6BZb5lPZl5.jpg");

         banner.setImageLoader(new ImageLoader() {
             @Override
             public void displayImage(Context context, Object path, ImageView imageView) {
                 DisplayImageOptions options = new DisplayImageOptions.Builder()
                         .cacheInMemory(true).cacheOnDisk(true)
                         .build();
                com.nostra13.universalimageloader.core.ImageLoader.getInstance()
                                         .displayImage((String)path,imageView,options);
             }
         });
           banner.setImages(list);
           banner.isAutoPlay(true);
           banner.setDelayTime(3000);
           banner.start();
        time.setText(i+"秒跳转");
        handler.sendEmptyMessageDelayed(1,1000);
    }
    Handler handler= new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if (i<=1){
                Intent intent = new Intent(MainActivity.this,Main2Activity.class);
                startActivity(intent);
                return;
            }
            i--;
            time.setText(i+"秒跳转");
            handler.sendEmptyMessageDelayed(1,1000);
        }
    };
}

  <!===================数据库网络图片=================!>
public class Show extends AppCompatActivity {

    private ViewPager viewpager;
    private DrawerLayout drawer;
    private RadioGroup radiogroup;
    private ArrayList<Fragment> list;
    private String str="http://172.17.8.100/movieApi/movie/v1/findReleaseMovieList?count=10&page=1";
    private PullToRefreshListView pullist;
    private  Adapter adapter;
    private List<JsonData.ResultBean> ilist;
    private Gson gson;
    private Dao dao;
    private Cursor cursor;
    private ContentValues values;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_show);
        dao = new Dao(Show.this);
        viewpager = findViewById(R.id.viewpager);
        drawer = (DrawerLayout) findViewById(R.id.drawer);
        radiogroup = findViewById(R.id.radiogroup);
        ImageView img = findViewById(R.id.img);
        pullist = (PullToRefreshListView) findViewById(R.id.pullist);
        final String path = "http://image.baidu.com/search/down?tn=download&word=download&ie=utf8&fr=detail&url=http%3A%2F%2Fimg5.duitang.com%2Fuploads%2Fitem%2F201410%2F05%2F20141005082835_2RTzn.thumb.700_0.jpeg&thumburl=http%3A%2F%2Fimg2.imgtn.bdimg.com%2Fit%2Fu%3D3846895839%2C2711067435%26fm%3D26%26gp%3D0.jpg";

        DisplayImageOptions options = new DisplayImageOptions.Builder()
                .cacheInMemory(true)//让图片进行内存缓存
                .cacheOnDisk(true)//让图片进行sdcard缓存

                .displayer(new CircleBitmapDisplayer())
                // //显示效果：圆角
                .displayer(new RoundedBitmapDisplayer(20))
                .build();
        ImageLoader.getInstance().displayImage(path,img,options);

          pullist.setScrollingWhileRefreshingEnabled(true);
          pullist.setMode(PullToRefreshListView.Mode.BOTH);
        if (Http.isNetworkConnected(Show.this)){
            Http.httpAsnycTask(str, new Http.Callbacks() {

                @Override
                public void getData(String s) {
                    Gson gson = new Gson();
                    JsonData json = gson.fromJson(s, JsonData.class);
                    ilist = json.getResult();
                    if (dao.query("show",null,null,null,null,null,null).moveToFirst()){

                    }else{
                        for (int i=0;i<ilist.size();i++){
                            values = new ContentValues();
                            values.put("name",ilist.get(i).getName());
                            values.put("imageUrl",ilist.get(i).getImageUrl());
                            dao.insert("show",null,values);
                        }
                    }
                    adapter = new Adapter(Show.this,ilist);
                    pullist.setAdapter(adapter);
                    pullist.onRefreshComplete();
                }
            });
        }else {
            cursor = dao.query("show", null, null, null, null, null, null);
             ilist=new ArrayList<>() ;
            if (cursor.moveToFirst()){
                do {
                    String name = cursor.getString(cursor.getColumnIndex("name"));
                    String imageUrl = cursor.getString(cursor.getColumnIndex("imageUrl"));
                   ilist.add(new JsonData.ResultBean(name, imageUrl));
                }while (cursor.moveToNext());
            }
            Toast.makeText(Show.this,"哎呀 没网了",Toast.LENGTH_LONG).show();
            cursor.close();
            adapter = new Adapter(Show.this, ilist);
            pullist.setAdapter(adapter);

        }
            pullist.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
            @Override
            public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
                if (Http.isNetworkConnected(Show.this)){
                    Http.httpAsnycTask(str, new Http.Callbacks() {



                        @Override
                        public void getData(String s) {
                            Gson gson = new Gson();
                            JsonData json = gson.fromJson(s, JsonData.class);
                            ilist = json.getResult();
                            if (dao.query("show",null,null,null,null,null,null).moveToFirst()){

                            }else{
                                for (int i=0;i<ilist.size();i++){
                                    values = new ContentValues();
                                    values.put("name",ilist.get(i).getName());
                                    values.put("imageUrl",ilist.get(i).getImageUrl());
                                    dao.insert("show",null,values);
                                }
                            }
                            adapter = new Adapter(Show.this,ilist);
                            pullist.setAdapter(adapter);
                            pullist.onRefreshComplete();
                        }
                    });
                }else{
                    Toast.makeText(Show.this,"哎呀 没网了",Toast.LENGTH_LONG).show();
                }
            }

            @Override
            public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
                if (Http.isNetworkConnected(Show.this)){
                    Http.httpAsnycTask(str, new Http.Callbacks() {
                        @Override
                        public void getData(String s) {
                            Gson gson = new Gson();
                            JsonData json = gson.fromJson(s, JsonData.class);
                            List<JsonData.ResultBean> beans = json.getResult();
                            ilist.addAll(beans);
                            adapter.notifyDataSetChanged();
                            pullist.onRefreshComplete();
                        }
                    });
                }else{
                    Toast.makeText(Show.this,"哎呀 没网了",Toast.LENGTH_LONG).show();

                }
            }
        });


        radiogroup.check(radiogroup.getChildAt(0).getId());
        list = new ArrayList<>();
        FragMent fragMent = new FragMent();
        FragMent2 fragMent2 = new FragMent2();
        FragMent3 fragMent3 = new FragMent3();
        list.add(fragMent);
        list.add(fragMent2);
        list.add(fragMent3);
        viewpager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
            @Override
            public Fragment getItem(int i) {
                return list.get(i);
            }

            @Override
            public int getCount() {
                return list.size();
            }
        });
        viewpager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int i, float v, int i1) {

            }

            @Override
            public void onPageSelected(int i) {
                radiogroup.check(radiogroup.getChildAt(i).getId());

            }

            @Override
            public void onPageScrollStateChanged(int i) {

            }


        });
        radiogroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                switch (checkedId) {
                    case R.id.button:
                        viewpager.setCurrentItem(0);
                        break;
                    case R.id.button1:
                        viewpager.setCurrentItem(1);
                        break;
                    case R.id.button2:
                        viewpager.setCurrentItem(2);
                        break;
                }
            }
        });

  <!===================Tadlayout布局=================!>

  <android.support.design.widget.TabLayout
        android:layout_width="match_parent"

        android:layout_height="wrap_content"
        android:id="@+id/tab"
        app:tabGravity="fill"/>
    <android.support.v4.view.ViewPager
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/pager"/>

  <!===================Tadlayout代码=================!>


public class FragMent extends Fragment {

    private TabLayout tab;
    private ViewPager pager;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View inflate = inflater.inflate(R.layout.fragment1, null);

        tab = inflate.findViewById(R.id.tab);

        pager = inflate.findViewById(R.id.pager);

        TabAdapter adapter = new TabAdapter(getChildFragmentManager());
        pager.setAdapter(adapter);
        tab.setupWithViewPager(pager);


        return inflate;
    }
}

  <!===================Tadlayout适配器=================!>


public class TabAdapter  extends FragmentPagerAdapter {
     String[] strings=new String[]{"第一个","第二个"};
    public TabAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int i) {
        switch (i){
            case 0:
            return  new FragMent01();
            case 1:
                return  new FragMent02();
        }
        return null;
    }

    @Override
    public int getCount() {
        return strings.length;
    }

    @Nullable
    @Override
    public CharSequence getPageTitle(int position) {
        return  strings[position];
    }
}

  <!==================PullToRefreshBase带数据库==================!>



public class frag01 extends Fragment {
    private Adapter adapter;
    private List<JsonData.ResultBean> ilist;
   private String str="http://172.17.8.100/movieApi/movie/v1/findReleaseMovieList?count=10&page=1";
    private Dao dao;
    private Cursor cursor;
    private PullToRefreshListView pull;
    private ContentValues values;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View inflate = inflater.inflate(R.layout.frag01, null);
        dao = new Dao(getActivity());
        pull = inflate.findViewById(R.id.pull);
      pull.setMode(PullToRefreshBase.Mode.BOTH);
      pull.setScrollingWhileRefreshingEnabled(true);
 if (Http.isNetworkConnected(getActivity())){
        Http.httpAsnycTask(str, new Http.Callbacks() {



            @Override
            public void getData(String s) {
                Gson gson = new Gson();
                JsonData json = gson.fromJson(s, JsonData.class);
               ilist = json.getResult();
               if (dao.query("show",null,null,null,null,null,null).moveToFirst()){

               }else{
                   for (int i=0;i<ilist.size();i++){
                       values = new ContentValues();
                        values.put("name",ilist.get(i).getName());
                        values.put("imageUrl",ilist.get(i).getImageUrl());
                       dao.insert("show",null,values);
                   }
               }
               adapter = new Adapter((Show) getActivity(),ilist);
                 pull.setAdapter(adapter);
            }
        });
 }else{
     cursor = dao.query("show", null, null, null, null, null, null);
     ilist = new ArrayList<>();
     if (cursor.moveToFirst()){
         do {
             String name = cursor.getString(cursor.getColumnIndex("name"));
              String imageUrl = cursor.getString(cursor.getColumnIndex("imageUrl"));
             boolean add = ilist.add(new JsonData.ResultBean(name, imageUrl));
         }while (cursor.moveToNext());
     }
     Toast.makeText(getActivity(),"哎呀 没网了",Toast.LENGTH_LONG).show();
     cursor.close();
     adapter = new Adapter((Show) getActivity(), ilist);
     pull.setAdapter(adapter);
 }

          pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
              @Override
              public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
if (Http.isNetworkConnected(getActivity())){
    Http.httpAsnycTask(str, new Http.Callbacks() {



        @Override
        public void getData(String s) {
            Gson gson = new Gson();
            JsonData json = gson.fromJson(s, JsonData.class);
            ilist = json.getResult();
            if (dao.query("show",null,null,null,null,null,null).moveToFirst()){

            }else{
                for (int i=0;i<ilist.size();i++){
                    values = new ContentValues();
                    values.put("name",ilist.get(i).getName());
                    values.put("imageUrl",ilist.get(i).getImageUrl());
                    dao.insert("show",null,values);
                }
            }
            adapter = new Adapter((Show) getActivity(),ilist);
            pull.setAdapter(adapter);
            pull.onRefreshComplete();
        }
    });
}else{
    Toast.makeText(getActivity(),"哎呀 没网了",Toast.LENGTH_LONG).show();
        }
}

              @Override
              public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
                 if (Http.isNetworkConnected(getActivity())){
                     Http.httpAsnycTask(str, new Http.Callbacks() {
                         @Override
                         public void getData(String s) {
                             Gson gson = new Gson();
                             JsonData json = gson.fromJson(s, JsonData.class);
                             List<JsonData.ResultBean> beans = json.getResult();
                             ilist.addAll(beans);
                             adapter.notifyDataSetChanged();
                             pull.onRefreshComplete();
                         }
                     });
                 }else{
                     Toast.makeText(getActivity(),"哎呀 没网了",Toast.LENGTH_LONG).show();
                 }
              }
          });
        return inflate;
    }
}

  <!==================Xlistview带数据库==================!>


public class frag02 extends Fragment {
    private  String  str="https://api.apiopen.top/musicRankings";
    private List<JsonBean.ResultBean> list;
    private Dao dao;
    private Cursor cursor;
    private MyAdapter adapter;
    private XListView xlistview;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View inflate = inflater.inflate(R.layout.frag02, null);
        dao = new Dao(getActivity());
        xlistview = inflate.findViewById(R.id.xlistview);
        xlistview.setPullLoadEnable(true);
        if (Http.isNetworkConnected(getActivity())){
            Http.httpAsnycTask(str, new Http.Callbacks() {




                @Override
                public void getData(String s) {
                    Gson gson = new Gson();
                    JsonBean bean = gson.fromJson(s, JsonBean.class);
                    list = bean.getResult();
                     if (dao.query("mus",null,null,null,null,null,null).moveToFirst()){

                     }else {
                         for (int i=0; i<list.size();i++){
                             ContentValues values = new ContentValues();
                             values.put("text",list.get(i).getName());
                             values.put("img",list.get(i).getPic_s192());
                             dao.insert("mus",null,values);
                         }
                     }
                    adapter = new MyAdapter(getActivity(),list);
                     xlistview.setAdapter(adapter);

                }
            });
        }else {
            cursor = dao.query("mus", null, null, null, null, null, null);
            list= new ArrayList<JsonBean.ResultBean>();
            if (cursor.moveToFirst()){
                do {
                    String text = cursor.getString(cursor.getColumnIndex("text"));
                    String img = cursor.getString(cursor.getColumnIndex("img"));
                    boolean add = list.add(new JsonBean.ResultBean(text, img));
                }while (cursor.moveToNext());
            }
            Toast.makeText(getActivity(),"没网了",Toast.LENGTH_SHORT).show();
            cursor.close();
         adapter = new MyAdapter(getActivity(),list);
            xlistview.setAdapter(adapter);
        }
        xlistview.setXListViewListener(new XListView.IXListViewListener() {
            @Override
            public void onRefresh() {
                if (Http.isNetworkConnected(getActivity())){
                    Http.httpAsnycTask(str, new Http.Callbacks() {




                        @Override
                        public void getData(String s) {
                            Gson gson = new Gson();
                            JsonBean bean = gson.fromJson(s, JsonBean.class);
                            list = bean.getResult();
                            if (dao.query("mus",null,null,null,null,null,null).moveToFirst()){

                            }else {
                                for (int i=0; i<list.size();i++){
                                    ContentValues values = new ContentValues();
                                    values.put("text",list.get(i).getName());
                                    values.put("img",list.get(i).getPic_s192());
                                    dao.insert("mus",null,values);
                                }
                            }
                            adapter = new MyAdapter(getActivity(),list);
                            xlistview.setAdapter(adapter);
                            onLoad();
                        }
                    });
                }else {
                    Toast.makeText(getActivity(),"没网了",Toast.LENGTH_SHORT).show();
                }
            }

            @Override
            public void onLoadMore() {
                if (Http.isNetworkConnected(getActivity())){
                    Http.httpAsnycTask(str, new Http.Callbacks() {

                        @Override
                        public void getData(String s) {
                            Gson gson = new Gson();
                            JsonBean bean = gson.fromJson(s, JsonBean.class);
                            List<JsonBean.ResultBean> result = bean.getResult();
                            list.addAll(result);
                            adapter.notifyDataSetChanged();
                            onLoad();
                        }
                    });
                }else {
                    Toast.makeText(getActivity(),"没网了",Toast.LENGTH_SHORT).show();
                }

            }
        });

        return inflate;
    }
    private  void  onLoad(){
        xlistview.stopRefresh();
        xlistview.stopLoadMore();
        xlistview.setRefreshTime("刚刚刷新过");
    }
}