package com.bawei.bluetoodemo;

import android.bluetooth.BluetoothAdapter;
import android.content.Context;
import android.net.wifi.WifiManager;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.google.gson.Gson;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;

public class MainActivity extends AppCompatActivity {
private TextView tv,tv1;
private WifiManager wm;
private ListView lv;
String str=”藍芽狀態：”;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv= (TextView) findViewById(R.id.tv);
tv1= (TextView) findViewById(R.id.tv1);
lv= (ListView) findViewById(R.id.lv);
//判斷是否有網路
ConnectivityManager cm= (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
NetworkInfo info = cm.getActiveNetworkInfo();
if(info!=null){
Toast.makeText(MainActivity.this,”當前狀態有網路”,Toast.LENGTH_LONG).show();
}else{
Toast.makeText(MainActivity.this,”當前沒有網路連線”,Toast.LENGTH_LONG).show();

    }
    //藍芽狀態
    BluetoothAdapter ba=BluetoothAdapter.getDefaultAdapter();
    if(ba!=null){
        if(ba.isEnabled()){
         //為true 開
            tv.setText(str+"開");
        }else{
            //為false   關
            tv.setText(str+"關");
        }
    }else{
        Toast.makeText(this,"當前不支援藍芽",Toast.LENGTH_LONG).show();
        tv.setText(str+"當前狀態不可用");
    }
    //WiFi  狀態
    wm= (WifiManager) getSystemService(Context.WIFI_SERVICE);
    int state = wm.getWifiState();

    switch (state){
        case 0:
            tv1.setText("wifi正在關閉");
            break;
        case 1:
            tv1.setText("wifi已經關閉");
            break;
        case 2:
            tv1.setText("wifi正在開啟");
            break;
        case 3:
            tv1.setText("wifi已經開啟");
            break;
    }

    if(state==3){
        //非同步
       new AsyncTask<String, Integer, String>() {
           @Override
           protected String doInBackground(String... strings) {
               String json_str="";
               //解析介面
               try {
                   URL url=new URL("https://www.toutiao.com/api/pc/focus/");
                   HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                   conn.setConnectTimeout(5000);
                   conn.setReadTimeout(5000);
                   int code = conn.getResponseCode();
                   //判斷狀態碼

                   if(code==200){
                       InputStream is = conn.getInputStream();
                       byte arr[]=new byte[1024];
                       int len=0;
                       while((len=is.read(arr))!=-1){
                           String s = new String(arr, 0, len);
                           json_str+=s;
                       }

                   }

               } catch (MalformedURLException e) {
                   e.printStackTrace();
               } catch (IOException e) {
                   e.printStackTrace();
               }
               return json_str;
           }

           @Override
           protected void onPostExecute(String s) {
             //  super.onPostExecute(s);
               //json  字串  json_str
               Gson gson=new Gson();
               User u = gson.fromJson(s, User.class);
               List<User.DataBean.PcFeedFocusBean> list =  u.getData().getPc_feed_focus();
               //介面卡
               Myadapter adapter=new Myadapter(MainActivity.this,list);
               lv.setAdapter(adapter);
           }
       }.execute();
    }else{
        Toast.makeText(MainActivity.this,state+"當前無網路連線",Toast.LENGTH_LONG).show();
    }

}
 

}
/////////////////////////介面卡//////
package com.bawei.bluetoodemo;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;

/**
* Created by 王利博 on 2017/12/1.
*/

public class Myadapter extends BaseAdapter{
private Context context;
private List