zuoyeer

package sulei.bawei.com.yuekao_a.activity; import android.os.AsyncTask; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.ListView; import android.widget.TextView; import com.google.gson.Gson; import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.util.List; import sulei.bawei.com.yuekao_a.R; import sulei.bawei.com.yuekao_a.adapter.Listadapter; import sulei.bawei.com.yuekao_a.bean.Data; public class MainActivity extends AppCompatActivity {     private ListView list;     private TextView tv_grade_name;     private int coung = 3;     private String FileName= "data3.json";     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         initview();         initdata();     }     private void initdata() {         AsyncTask<String, String, String> as = new AsyncTask<String, String,String>() {             @Override             protected String doInBackground(String... params) {                 try {                     String s = GetString(getAssets().open(params[0]));                     return s;                 } catch (Exception e) {                     e.printStackTrace();                 }                 return null;             }             @Override             protected void onPostExecute(String s) {                 super.onPostExecute(s);                 List<Data.DataBean.ZhuanListBean> zhuanList = new Gson().fromJson(s, Data.class).getData().getZhuanList();                 tv_grade_name.setText(zhuanList.get(0).getGrade());                 list.setAdapter(new Listadapter(MainActivity.this,zhuanList));             }         };         as.execute(FileName);     }     private void initview() {         list = (ListView) findViewById(R.id.list);         tv_grade_name = (TextView) findViewById(R.id.tv_grade_name);         tv_grade_name.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 popu popu = new popu(MainActivity.this);                 popu.UpData().showAsDropDown(tv_grade_name);                 popu.setInterFface(new popu.Get() {                     @Override                     public void GetName(int position) {                         FileName = "data" + position + ".json";                         initdata();                     }                 });             }         });     }     private String GetString(InputStream in) throws Exception {         byte[] by = new byte[1024];         int len;         ByteArrayOutputStream b = new ByteArrayOutputStream();         while ((len = in.read(by)) != -1) {             b.write(by, 0, len);         }         b.close();         in.close();         return b.toString();     } }

package sulei.bawei.com.yuekao_a.activity;

import android.content.Context; import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.PopupWindow; import java.lang.annotation.Retention; import sulei.bawei.com.yuekao_a.R; import static android.R.attr.id; /**  * Created by Administrator on 2017/4/3.  */ public class popu  {     ListView list1,list2;     Context con;     private PopupWindow po;     public popu(Context con) {         this.con=con;     }     public PopupWindow UpData(){         View vi=View.inflate(con, R.layout.popu,null);         list1= (ListView) vi.findViewById(R.id.list_popo1);         list2= (ListView) vi.findViewById(R.id.list_popo2);         po = new PopupWindow(vi, LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.MATCH_PARENT);        po.setBackgroundDrawable(new ColorDrawable(Color.WHITE));         po.setTouchable(true);         po.setFocusable(true);        list1.setAdapter(new ArrayAdapter<String>(con,android.R.layout.simple_list_item_1,GetStringBanji()));         list1.setOnItemClickListener(new AdapterView.OnItemClickListener() {             @Override             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                 List2AddData(position);             }         });         List2AddData(0);         return po;     }     private void List2AddData(final int ids) {         list2.setAdapter(new ArrayAdapter<String>(con,android.R.layout.simple_list_item_1,GetList2Banji(ids)));         list2.setOnItemClickListener(new AdapterView.OnItemClickListener() {             @Override             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                if(GetList2Banji(ids)[position].equals("四年级")||GetList2Banji(ids)[position].equals("初中一")||GetList2Banji(ids)[position].equals("高中一")){                    Get.GetName(getid(GetList2Banji(ids)[position]));                    po.dismiss();                }             }         });     }     private  String[] GetStringBanji(){         return  new String[]{"小学","初中","高中"};     }     private String[] GetList2Banji(int id){         switch (id){             case 0:             return  new String[]{ "一年级","二年级","三年级","四年级","五年级"};             case 1:             return  new String[]{ "初中一","初中二","初中三"};             case 2:             return  new String[]{ "高中一","高中二","高中三"};         }         return null;     }     private Get  Get;     public interface Get{         void GetName(int position);     }     public void setInterFface( Get  Get)     {         this.Get=Get;     }     public int getid(String name){         switch (name){             case "四年级":                 return 3;             case "高中一":                 return 2;             case "初中一":                 return 1;         }     return 0;     } }