week

一·

<android.support.v4.widget.DrawerLayout
        android:id="@+id/draw"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <!--主界面-->
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

          <android.support.v4.view.ViewPager
              android:id="@+id/pager"
              android:layout_width="match_parent"
              android:layout_height="0dp"
              android:layout_weight="1"/>

            <android.support.design.widget.TabLayout
                android:id="@+id/tab"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />
        </LinearLayout>
        <!--=========================分割线==================================-->
        <!--侧滑界面-->
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="left"
            android:background="#ded3d3"
            android:orientation="horizontal">

            <Button
                android:id="@+id/btn2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="关闭侧滑"/>
        </LinearLayout>

    </android.support.v4.widget.DrawerLayout>

二

public class MainActivity extends AppCompatActivity {

    private DrawerLayout draw;
    private TabLayout tab;
    private ViewPager pager;
    private Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //第一步:找控件
        draw = findViewById(R.id.draw);
        tab = findViewById(R.id.tab);
        pager = findViewById(R.id.pager);
        button = findViewById(R.id.btn2);//直接找侧滑中的控件

        //第二步侧滑页面
        draw.addDrawerListener(new DrawerLayout.DrawerListener() {
            @Override
            public void onDrawerSlide(@NonNull View view, float v) {

            }

            @Override
            public void onDrawerOpened(@NonNull View view) {
                Toast.makeText(MainActivity.this, "侧滑打开", Toast.LENGTH_LONG).show();
            }

            @Override
            public void onDrawerClosed(@NonNull View view) {
                Toast.makeText(MainActivity.this, "侧滑关闭", Toast.LENGTH_LONG).show();

            }

            @Override
            public void onDrawerStateChanged(int i) {

            }
        });
        //第三步:点击侧滑内的按钮 关闭侧滑页面
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                draw.closeDrawer(Gravity.LEFT);
            }
        });
        //页面切换==========================
        //第四步:数据
        // //页面数据
        ArrayList<Fragment> list = new ArrayList<>();
        list.add(new Frag01());
        list.add(new Frag02());
        //tab的文字数据
        String str[] = {"首页", "我的"};
        //第五步:适配器
        MypagerAdapter mypagerAdapter = new MypagerAdapter(getSupportFragmentManager(), list, str);
        //给Viewpager设置适配器
        pager.setAdapter(mypagerAdapter);
        //第六步:绑定Viewpager
        tab.setupWithViewPager(pager);

    }
}

三

public class HttpUtils {
    ///创建接口
    public interface CallBackA {
        //写方法
        void getData(String s);
    }

    //封装异步
    public static void getAsyncTask(String url, final CallBackA backA) {

        new AsyncTask<String, Void, String>() {
            @Override
            protected String doInBackground(String... strings) {
                return httpGet(strings[0]);
            }

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                backA.getData(s);

            }
        }.execute(url);
    }


    //====================================================================
    /*
     * 网络判断
     * */
    public static boolean isNetworkConnected(Context context) {

        if (context != null) {
            //获取连接管理器
            ConnectivityManager mConnectivityManager = (ConnectivityManager)
                    context.getSystemService(Context.CONNECTIVITY_SERVICE);
            //获取网络状态
            NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
            if (mNetworkInfo != null) {
                //判断网络是否可用
                return mNetworkInfo.isAvailable();
            }
        }
        return false;
    }

    /**
     * @param strUrl 网络接口
     * @return :请求的 String 类型的数据
     * @author: 苏青岩
     * @data: 2019/1/2  16:24
     * @Description: 请求网络数据的方法
     */
    public static String httpGet(String strUrl) {
        //设置url
        try {
            URL url = new URL(strUrl);
            //获取HttpURLConnection
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            //设置为get请求
            connection.setRequestMethod("GET");
            //设置连接主机超时时间
            connection.setConnectTimeout(5000);
            //设置从主机读取数据超时
            connection.setReadTimeout(5000);
            //得到数据
            InputStream stream = connection.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
            //拼接数据
            StringBuilder builder = new StringBuilder();
            String str = "";
            while ((str = reader.readLine()) != null) {
                builder.append(str);
            }
            //关闭连接
            connection.disconnect();
            //返回数据
            return builder.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }


}

四MypagerAdapter

public class MypagerAdapter extends FragmentPagerAdapter {
    private ArrayList<Fragment> list;
    private String str[];

    public MypagerAdapter(FragmentManager fm, ArrayList<Fragment> list, String[] str) {
        super(fm);
        this.list = list;
        this.str = str;
    }

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

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

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

五frag01

public class Frag01 extends Fragment {

    private XListView listView;
    private String url = "https://www.apiopen.top/meituApi?page=1";
    private XAdapter adapter;
    private List<JsonBean.DataBean> list;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.frag01, container, false);
        listView = view.findViewById(R.id.xlist);
        listView.setPullLoadEnable(true);
        //设置上拉和下拉
        listView.setXListViewListener(new XListView.IXListViewListener() {
            @Override
            public void onRefresh() {
                HttpUtils.getAsyncTask(url, new HttpUtils.CallBackA() {
                    @Override
                    public void getData(String s) {
                        //这个方法在主线程中
                        //解析
                        Gson gson = new Gson();
                        JsonBean bean = gson.fromJson(s, JsonBean.class);
                        List<JsonBean.DataBean> list = bean.getData();
                        //适配器
                        XAdapter adapter = new XAdapter(list, getActivity());
                        listView.setAdapter(adapter);
                        listView.stopRefresh();
                    }
                });
            }

            @Override
            public void onLoadMore() {
                HttpUtils.getAsyncTask(url, new HttpUtils.CallBackA() {
                    @Override
                    public void getData(String s) {
                        //这个方法在主线程中
                        //解析
                        Gson gson = new Gson();
                        JsonBean bean = gson.fromJson(s, JsonBean.class);
                        List<JsonBean.DataBean> list2 = bean.getData();
                        list.addAll(list2);
                        adapter.notifyDataSetChanged();
                        listView.stopLoadMore();
                    }
                });
            }
        });
        return view;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        //请求数据
        HttpUtils.getAsyncTask(url, new HttpUtils.CallBackA() {


            @Override
            public void getData(String s) {
                //这个方法在主线程中
                //解析
                Gson gson = new Gson();
                JsonBean bean = gson.fromJson(s, JsonBean.class);
                list = bean.getData();
                //适配器
                adapter = new XAdapter(list, getActivity());
                listView.setAdapter(adapter);
            }
        });

    }
}

六xAdapter

public class XAdapter extends BaseAdapter {
    private List<JsonBean.DataBean> list;
    private Context context;

    public XAdapter(List<JsonBean.DataBean> list, Context context) {
        this.list = list;
        this.context = context;
    }

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

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        int type = getItemViewType(position);
        switch (type) {
            case 0:
                ViewHolder0 holder0 = null;
                if (convertView == null) {
                    convertView = View.inflate(context, R.layout.item01, null);
                    holder0 = new ViewHolder0();
                    holder0.textView0 = convertView.findViewById(R.id.textView01);
                    convertView.setTag(holder0);
                } else {
                    holder0 = (ViewHolder0) convertView.getTag();
                }
                JsonBean.DataBean bean0 = list.get(position);
                holder0.textView0.setText(bean0.getType());
                break;
            case 1:
                ViewHolder1 holder1 = null;
                if (convertView == null) {
                    convertView = View.inflate(context, R.layout.item02, null);
                    holder1 = new ViewHolder1();
                    holder1.textView1 = convertView.findViewById(R.id.textView1);
                    holder1.imageView1 = convertView.findViewById(R.id.imageView1);
                    convertView.setTag(holder1);
                } else {
                    holder1 = (ViewHolder1) convertView.getTag();
                }
                JsonBean.DataBean bean1 = list.get(position);
                holder1.textView1.setText(bean1.getType());
                //设置图片
                Glide.with(context).load("http://n.sinaimg.cn/sports/transform/237/w650h387/20190219/XUgA-htfpvza1481742.png").into(holder1.imageView1);
                break;
            case 2:
                ViewHolder2 holder2 = null;
                if (convertView == null) {
                    convertView = View.inflate(context, R.layout.item03, null);
                    holder2 = new ViewHolder2();
                    holder2.textView2 = convertView.findViewById(R.id.textView2);
                    holder2.time2 = convertView.findViewById(R.id.textView22);
                    holder2.imageView2 = convertView.findViewById(R.id.imageView2);
                    convertView.setTag(holder2);
                } else {
                    holder2 = (ViewHolder2) convertView.getTag();
                }
                JsonBean.DataBean bean2 = list.get(position);
                holder2.textView2.setText(bean2.getType());
                holder2.time2.setText(bean2.getCreatedAt());
                //设置图片
                Glide.with(context).load("http://n.sinaimg.cn/sports/transform/237/w650h387/20190219/XUgA-htfpvza1481742.png").into(holder2.imageView2);
                break;
        }


        return convertView;
    }

    class ViewHolder0 {
        TextView textView0;
    }

    class ViewHolder1 {

        TextView textView1;
        ImageView imageView1;
    }

    class ViewHolder2 {

        TextView textView2;
        ImageView imageView2;
        TextView time2;
    }

    //=======================================================
    //多条目

    @Override
    public int getViewTypeCount() {//视图类型个数
        return 3;
    }

    @Override
    public int getItemViewType(int position) {
        return position % 3;
    }
}