抽基类 tablayout pulltorefresh

##基类

public class Utils {
 private Handler handler;
    private static Utils instance;

    private Utils() {
        handler = new Handler();
    }
    public static Utils getInstance(){
        if (instance==null){
            synchronized (Utils.class){
                if (instance==null){
                    instance = new Utils();

                }
            }
        }
        return instance;
    }
    //Handler
    public void getRequest4(final String apiUrl, final Class clazzBean, final NetCallback callback) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                final Object object = getRequest2(apiUrl, clazzBean);
                if (object != null) {
                    mHandler.post(new Runnable() {
                        @Override
                        public void run() {
                            callback.onSuccess(object);
                        }
                    });
                } else {
                    mHandler.post(new Runnable() {
                        @Override
                        public void run() {
                            callback.onFail("请求失败");
                        }
                    });
                }
            }
        }).start();
    }
    public void getRequest3(final String apiurl, final Class clazz, final UtilsCallback callback){
        new AsyncTask<String, Void, Object>() {
            @Override
            protected Object doInBackground(String... strings) {


                return getRequest2(strings[0], clazz);
            }

            @Override
            protected void onPostExecute(Object o) {
                if (o==null){
                    callback.onFail("请求失败");
                }else {
                    callback.onSuccess(o);

                }
            }
        }.execute(apiurl);
        //executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, apiUrl);
    }
    public interface UtilsCallback<T>{
        void onSuccess(T o);
        void onFail(String msg);

    }
     /**
     * 执行一个网络请求
     *
     * @param apiUrl
     * @param clazzBean
     * @param <T>
     * @return 返回Bean类
     */  
  public <T> T getRequest2(String apiurl,Class clazz){
        Object o;
        String request = getRequest(apiurl);
        Gson gson = new Gson();
        o = gson.fromJson(request, clazz);
        return (T)o;
    }
    /**
     * 执行一个网络请求
     *
     * @param apiUrl
     * @return 返回Strinng结果
     */
    public String getRequest(String apiurl){
        String steam = "";
        try {
            URL url = new URL(apiurl);
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            urlConnection.setRequestMethod("GET");
            urlConnection.setConnectTimeout(5000);
            urlConnection.setReadTimeout(5000);
            int responseCode = urlConnection.getResponseCode();
            if (responseCode==HttpURLConnection.HTTP_OK){
                steam = getSteam(urlConnection.getInputStream());

            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return steam;
    }

    private String getSteam(InputStream inputStream) throws Exception {
        StringBuilder stringBuilder = new StringBuilder();
        InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
        BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
        for (String tmp = bufferedReader.readLine();tmp != null;tmp = bufferedReader.readLine()){
            stringBuilder.append(tmp);
        }
        return stringBuilder.toString();
    }
     private Context context;
     //判断有没有网
    public boolean hasNotwotk(Context context){
        this.context=context;
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetworkInfo = cm.getActiveNetworkInfo();
        return activeNetworkInfo!=null&&activeNetworkInfo.isAvailable();//有没有开启网络
    }
    //是否是手机网
    public boolean isMobileNotwork(){
        /*ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetworkInfo1 = manager.getActiveNetworkInfo();*/
        //网络管理者
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //获取当前网络状态
        NetworkInfo activeNetworkInfo = cm.getActiveNetworkInfo();
        //判断网络类型
        return activeNetworkInfo!=null&&activeNetworkInfo.getType()==TYPE_MOBILE;
    }
}

##BaseActivity

public abstract class BaseActivity extends AppCompatActivity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(getLayoutResId());
        initData();
        initView();
    }
    protected abstract int getLayoutResId();
    protected abstract void initData();
    protected abstract void initView();
}

##BaseFragment

public abstract class BaseFragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(getLayoutResId(),container,false);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        initData();
        initView(view);
    }
    protected abstract int getLayoutResId();
    protected abstract void initData();
    protected abstract void initView(View view);
}

##App

public class App extends Application {

    //Activity    Service    Receive   前回调
    //在contentprovider 后调用
    @Override
    public void onCreate() {
        super.onCreate();
        //全局图片如何显示
        DisplayImageOptions options = new DisplayImageOptions.Builder()
                .cacheInMemory(true)
                .cacheOnDisk(true)
                .showImageOnLoading(R.mipmap.ic_launcher)
                .showImageOnFail(R.mipmap.ic_launcher)
                .showImageForEmptyUri(R.mipmap.ic_launcher)
                .bitmapConfig(Bitmap.Config.RGB_565)
                .build();

        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this)
                .memoryCacheSizePercentage(20)
                //图片缓存路径
                .diskCache(new UnlimitedDiskCache(new File(Environment.getExternalStorageDirectory(),"a")))
                
               // .diskCache(new UnlimitedDiskCache(new File(getCacheDir(), "images")))
                .defaultDisplayImageOptions(options)
                .build();

        ImageLoader.getInstance().init(configuration);
    }

    //应用结束回调    真实设备上不会回调
    @Override
    public void onTerminate() {
        super.onTerminate();
    }


    //当内存过低的时候调用
    @Override
    public void onLowMemory() {
        //释放内存
        super.onLowMemory();
    }
}

##tab+viewpager+频道管理

public class FragmentOne extends BaseFragment{
   private TabLayout tab;
   private ViewPager pager;
    private Button bt;
    private ArrayList<ChannelBean> list;
    private Tabadapter tabadapter;

    @Override
    protected int getLayoutResId() {
        return R.layout.fragmentone;
    }

    @Override
    protected void initView(View view) {
      tab = view.findViewById(R.id.tab);
      pager = view.findViewById(R.id.pager);
        tabadapter = new Tabadapter(getChildFragmentManager());

        pager.setAdapter(tabadapter);
        tab.setupWithViewPager(pager);
        bt = view.findViewById(R.id.bt);
        bt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //ChannelActivity.startChannelActivity((AppCompatActivity) getActivity(),list);
                Gson gson = new Gson();
                String s = gson.toJson(list);
                Intent intent = new Intent(getActivity(),ChannelActivity.class);
                intent.putExtra(RESULT_JSON_KEY,s);
                startActivityForResult(intent,REQUEST_CODE);
            }
        });
    }

    @Override
    protected void initData() {
        list = new ArrayList<>();
        list.add(new ChannelBean("111",true));
        list.add(new ChannelBean("222",true));
        list.add(new ChannelBean("333",true));
        list.add(new ChannelBean("444",true));
        list.add(new ChannelBean("555",true));
        list.add(new ChannelBean("666",false));
        list.add(new ChannelBean("777",false));
        list.add(new ChannelBean("888",false));
        list.add(new ChannelBean("999",false));
        tabadapter.setList(list);

    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode==REQUEST_CODE&&resultCode==ChannelActivity.RESULT_CODE){
            String stringExtra = data.getStringExtra(RESULT_JSON_KEY);
            Gson gson = new Gson();
            List<ChannelBean> o = (List<ChannelBean>) gson.fromJson(stringExtra, new TypeToken<List<ChannelBean>>(){}.getType());

            tabadapter.setList(o);
        }
    }
}

##请求数据

public class FragmentFive extends BaseFragment{
    private PullToRefreshListView pull;
    private Myadapter myadapter;

    @Override
    protected int getLayoutResId() {
        return R.layout.fragmentfive;
    }



    @Override
    protected void initView(View view) {
        pull = view.findViewById(R.id.pull);
        myadapter = new Myadapter(getActivity());
        pull.setAdapter(myadapter);
        pull.onRefreshComplete();
        pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
            @Override
            public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
                page=1;
                initData();
            }

            @Override
            public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
                initData();
            }
        });
    }
    private int page=1;
    private final int count = 10;
    private String relase="http://172.17.8.100/movieApi/movie/v1/findReleaseMovieList?";
    private String hot="http://172.17.8.100/movieApi/movie/v1/findHotMovieList?";

    @Override
    protected void initData() {
        Utils.getInstance().getRequest3(hot+"page="+page+"&count="+count,NewHot.class, new Utils.UtilsCallback<NewHot>() {
            @Override
            public void onSuccess(NewHot o) {
                if (page==1){
                    myadapter.setHot(o.getResult());
                }else {
                    myadapter.addHot(o.getResult());
                }
                page++;
                pull.onRefreshComplete();

            }

            @Override
            public void onFail(String msg) {
                pull.onRefreshComplete();
                Toast.makeText(getActivity(),"请求Hot错误",Toast.LENGTH_SHORT).show();
            }
        });
    }
}

##tab+频道管理 适配器

public class Tabadapter extends FragmentPagerAdapter {

    private List<ChannelBean> list;

    /*private String[] s = new String[]{
                    "111","222","333","444","555"
            };*/



    public Tabadapter(FragmentManager fm) {
        super(fm);
        list = new ArrayList<>();
    }
    public void setList(List<ChannelBean> list) {
        if (list!=null) {
            this.list = list;
            notifyDataSetChanged();
        }
    }
    @Override
    public Fragment getItem(int i) {
        switch (i){
            case 0:
                return new FragmentTab1();
                default:
                    return new FragmentTab2();
        }

    }

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

    @Nullable
    @Override
    public CharSequence getPageTitle(int position) {
        if (list.get(position).isSelect()){
            return list.get(position).getName();
        }
        return null;
    }
}
     /*public class Tabadapter extends FragmentPagerAdapter {
    private String[] s = new String[]{
            "正在热映","即将热映"
    };
    public Tabadapter(FragmentManager fm) {
        super(fm);
    }

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

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

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

##列表适配器

public class Myadapter extends BaseAdapter {
    private Context context;
    private List<NewHot.HotBean> hot;
    

    public Myadapter(Context context) {
        this.context = context;
        this.hot = new ArrayList<>();
       
    }

    public void setHot(List<NewHot.HotBean> hot) {
        if (hot!=null){
            this.hot = hot;
        }
        notifyDataSetChanged();
    }
    public void addHot(List<NewHot.HotBean> hot){
        if (hot!=null){
            this.hot.addAll(hot);
        }
        notifyDataSetChanged();
    }


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

    @Override
    public Object getItem(int position) {
        return hot.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        HotViewHolder hotViewHolder;
        if (convertView==null){
            convertView = LayoutInflater.from(context).inflate(R.layout.hot_item,parent,false);
            hotViewHolder = new HotViewHolder(convertView);
        }else {
            hotViewHolder = (HotViewHolder) convertView.getTag();
        }
        hotViewHolder.bindHot((NewHot.HotBean) getItem(position));
        return convertView;
    }
    class HotViewHolder{
        TextView hname,hdata;
        ImageView hiv_img;

        public HotViewHolder(View convertView) {
            hname = convertView.findViewById(R.id.hname);
            hdata = convertView.findViewById(R.id.hdata);
            hiv_img = convertView.findViewById(R.id.hiv_img);
            convertView.setTag(this);
        }

        public void bindHot(NewHot.HotBean item) {
            hname.setText(item.getName());
            hdata.setText(item.getSummary());
            ImageLoader.getInstance().displayImage(item.getImageUrl(),hiv_img);
        }
    }
}

##viewpager 和 列表 适配器

public class Infoadapter extends BaseAdapter {
    private Context context;
    private List<BannerBean.Data> banner;
    private List<NewsBean.ResultBean> news;

    public Infoadapter(Context context) {
        this.context = context;
        banner = new ArrayList<>();
        news = new ArrayList<>();
    }

    public void setBanner(List<BannerBean.Data> banner) {
        if (banner!=null) {
            this.banner = banner;
            notifyDataSetChanged();
        }
    }
    public void setNews(List<NewsBean.ResultBean> news) {
        if (news!=null) {
            this.news = news;

        }notifyDataSetChanged();
    }
    public void addNews(List<NewsBean.ResultBean> news){
        if (news!=null) {
            this.news.addAll(news);

        }
        notifyDataSetChanged();
    }
    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @Override
    public int getItemViewType(int position) {
        if (banner.size()>0&&position==0){
            return 0;
        }
        return 1;
    }

    @Override
    public int getCount() {
        return banner.size()>0?news.size()+1:news.size();
    }


    @Override
    public NewsBean.ResultBean getItem(int position) {
       if (banner.size()>0){
            if (position==0){
                return null;
            }
return news.get(position-1);
        }
        return news.get(position);
    }

    @Override
    public long getItemId(int position) {

        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (getItemViewType(position)==0){
            bannerViewHolder bannerviewHolder;
            if (convertView==null){
                convertView = LayoutInflater.from(context).inflate(R.layout.banner_item,parent,false);
                bannerviewHolder = new bannerViewHolder(convertView);
            }else {
                bannerviewHolder = (bannerViewHolder) convertView.getTag();
            }

            bannerviewHolder.bindBanner(banner);
        }else {
        newsViewHolder newsviewHolder;
        if (convertView == null) {
            convertView = LayoutInflater.from(context).inflate(R.layout.list_item, parent, false);
            newsviewHolder = new newsViewHolder(convertView);
        } else {
            newsviewHolder = (newsViewHolder) convertView.getTag();
        }
        newsviewHolder.bindnews(getItem(position));
   }
        return convertView;
    }
    class bannerViewHolder{
        private Mybanneradapter mybanneradapter;
        ViewPager bannerpager;
        private Handler handler = new Handler(){
            @Override
            public void handleMessage(Message msg) {
                int i =0;
                if (msg.what==1){
                    i = bannerpager.getCurrentItem();
                    i++;
                    bannerpager.setCurrentItem(i);
                    handler.sendEmptyMessageDelayed(1,3000);
                }
            }
        };

        public bannerViewHolder(View convertView) {
            bannerpager = convertView.findViewById(R.id.bannerpager);
            mybanneradapter = new Mybanneradapter();
            bannerpager.setAdapter(mybanneradapter);
            convertView.setTag(this);
        }

        public void bindBanner(List<BannerBean.Data> item) {
            mybanneradapter.setList(item);
            handler.removeMessages(1);
            if (item.size()>1){

                bannerpager.setCurrentItem(item.size()*5000);

                handler.sendEmptyMessageDelayed(1,3000);
            }

        }
    }
    class newsViewHolder{
        TextView name,summary;
        ImageView icon;

        public newsViewHolder(View convertView) {
            name = convertView.findViewById(R.id.name);
            summary = convertView.findViewById(R.id.summary);
            icon = convertView.findViewById(R.id.icon);
            convertView.setTag(this);
        }

        public void bindnews(NewsBean.ResultBean item) {
            name.setText(item.getName());
            summary.setText(item.getSummary());
            ImageLoader.getInstance().displayImage(item.getImageUrl(),icon);
        }
    }
}

##请求数据 轮播和列表

public class InfoFragment extends BaseFragment{
    private Infoadapter infoadapter;

    private PullToRefreshListView pull;

    @Override
    protected void initView(View view) {

         pull = view.findViewById(R.id.pull);
         pull.setMode(PullToRefreshListView.Mode.BOTH);
        infoadapter = new Infoadapter(getActivity());
        pull.setAdapter(infoadapter);

        pull.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
             @Override
             public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
                 //刷新
                 page=1;
                 initData();
             }

             @Override
             public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
                //加载
                requestNews();
             }
         });

    }
    private int page =1;
    private final int count = 10;
    private String bannerUrl = "http://www.zhaoapi.cn/quarter/getAd";
    //page=1&count=10
    private String newsUrl = "http://172.17.8.100/movieApi/movie/v1/findHotMovieList?";
    @Override
    protected void initData() {
        requestBanner();
        requestNews();
    }

    private void requestNews() {
        Utils.getInstance().getRequest3(newsUrl + "page=" + page + "&count=" + count,
                NewsBean.class, new Utils.NetCallback<NewsBean>() {
            @Override
            public void onSuccess(NewsBean o) {

                if (page==1){
                    infoadapter.setNews(o.getResult());
                }else {
                    infoadapter.addNews(o.getResult());
                }
                page++;
                pull.onRefreshComplete();
                if (o.getResult().size()<count){
                    pull.setMode(PullToRefreshBase.Mode.PULL_FROM_START);
                }else {
                    pull.setMode(PullToRefreshBase.Mode.BOTH);
                }
            }

            @Override
            public void onFail(String msg) {
                pull.onRefreshComplete();
                Toast.makeText(getActivity(), "请求News错误", Toast.LENGTH_SHORT).show();
            }
        });
    }

    private void requestBanner() {
        Utils.getInstance().getRequest3(bannerUrl, BannerBean.class, new Utils.NetCallback<BannerBean>() {
            @Override
            public void onSuccess(BannerBean o) {
                infoadapter.setBanner(o.getData());
            }

            @Override
            public void onFail(String msg) {
                Toast.makeText(getActivity(), "请求Banner错误", Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    protected int getLayoutResId() {
        return R.layout.infofragment;
    }
}