와이파이 연결 목록보기를 만드는 방법

Question

이 부분 코드는 Wi-Fi 연결을 표시합니다. 문제는 그것이 모두 유니크 텍스트 뷰에 있다는 것입니다. 이 코드에서 WiFi 연결 목록보기를 만들 수 있습니까?

package com.pkg.androidmemoryinfo; 
import android.app.Activity; 
import android.app.ActivityManager; 
import android.app.ActivityManager.MemoryInfo; 
import android.app.Dialog; 
import android.app.TimePickerDialog; 
import android.content.BroadcastReceiver; 
import android.content.Context; 
import android.content.Intent; 
import android.content.IntentFilter; 
import android.graphics.Typeface; 
import android.net.wifi.ScanResult; 
import android.net.wifi.WifiInfo; 
import android.net.wifi.WifiManager; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.ListView; 
import android.widget.TextView; 
import android.widget.TimePicker; 
import android.widget.Toast; 

import java.util.Calendar; 
import java.util.List; 

    public class MainActivity extends Activity implements OnClickListener { 

     private String ips = null; 
     private WifiManager wifi; 
     private WifiInfo info; 
     private TextView ipv; 
     private TextView text; 

     TextView mainText; 
     WifiManager mainWifi; 
     WifiReceiver receiverWifi; 
     List<ScanResult> wifiList; 
     StringBuilder sb = new StringBuilder(); 

     static final int TIME_DIALOG_ID = 1111; 
     private TextView output; 
     public Button btnClick; 

     private int hour; 
     private int minute; 
     private ListView lv; 
     public ArrayAdapter<String> adapter; 

     @Override 
     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.activity_main); 
      // Nav Drawer // 

      // fine // 

      mainText = (TextView) findViewById(R.id.mainText); 

      // Initiate wifi service manager 
      mainWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE); 

      // Check for wifi is disabled 
      if (mainWifi.isWifiEnabled() == false) 
       { 
        // If wifi disabled then enable it 
        Toast.makeText(getApplicationContext(), "Il Wifi è disattivato.. Accensione in corso.", 
        Toast.LENGTH_LONG).show(); 

        mainWifi.setWifiEnabled(true); 
       } 

      // wifi scaned value broadcast receiver 
      receiverWifi = new WifiReceiver(); 

      // Register broadcast receiver 
      // Broacast receiver will automatically call when number of wifi connections changed 
      registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)); 
      mainWifi.startScan(); 
      mainText.setText("Ricerca reti Wi-Fi in corso..."); 

      /// Wifi Info /// 
      wifi = (WifiManager)getSystemService(Context.WIFI_SERVICE); // istanzio l'oggetto wifi(classe WifiManager) 
      info = wifi.getConnectionInfo(); // istanzio l'oggetto info(classe WifiInfo) 


      if (info.getBSSID() != null) { // verifico che la connessione si attiva, in particolare il metodo getBSSID() restituisce valore nullo se la connessione non è attiva 
       this.ipv = (TextView)this.findViewById(R.id.addres); 
       this.text = (TextView)this.findViewById(R.id.text); 
       this.text.setText("Dispositivo connesso a " + info.getSSID()); //qui viene richiamato il metodo getSSID() che restituisce una stringa, in particolare l'identificativo dell'SSID 
       //int ip = info.getIpAddress(); // il metodo getIpAddress() restituisce un intero che rappresenta l'indirizzo IP, ovviamente non è la tipica rappresentazione a cui siamo abituati ex.: 127.0.0.1 
       //this.ips = (((ip & 0xFF)) + "." + ((ip >> 8) & 0xFF) + "." + ((ip >> 16) & 0xFF) + "." + ((ip >> 24) & 0xFF));// converto l'intero nella tipica notazione, ho adottato questo sistema un po grezzo poiche non conosco un altro metodo piu semplice 
       this.ipv.setText(ips); 
      } else {// se la connessione non è attiva 
       this.ipv = (TextView)this.findViewById(R.id.addres); 
       this.ipv.setText("Nessuna connessione Wifi attiva!"); 
      } 
      //// FINE ///// 
      output = (TextView) findViewById(R.id.output); 

      /********* display current time on screen Start ********/ 

       final Calendar c = Calendar.getInstance(); 
       // Current Hour 
       hour = c.get(Calendar.HOUR_OF_DAY); 
       // Current Minute 
       minute = c.get(Calendar.MINUTE); 

       // Append in a StringBuilder 
       StringBuilder outputMsg = new StringBuilder().append(utilTime(hour)).append(":") 
       .append(utilTime(minute)); 

       // set current time into output textview 
       output.setText(outputMsg); 

      /********* display current time on screen End ********/ 

       // Add Button Click Listener 
       addButtonClickListener(); 

     } 


     public boolean onCreateOptionsMenu(Menu menu) { 
      menu.add(0, 0, 0, "Refresh"); 
      return super.onCreateOptionsMenu(menu); 
     } 

     public boolean onMenuItemSelected(int featureId, MenuItem item) { 
      mainWifi.startScan(); 
      mainText.setText("Inizio Ricerca"); 
      return super.onMenuItemSelected(featureId, item); 
     } 

     protected void onPause() { 
      unregisterReceiver(receiverWifi); 
      super.onPause(); 
     } 

     protected void onResume() { 
      registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)); 
      super.onResume(); 
     } 

     // Broadcast receiver class called its receive method 
     // when number of wifi connections changed 

     class WifiReceiver extends BroadcastReceiver { 

      // This method call when number of wifi connections changed 
      public void onReceive(Context c, Intent intent) { 

       sb = new StringBuilder(); 
       wifiList = mainWifi.getScanResults(); 
       sb.append("\n Connessioni trovate :"+wifiList.size()+"\n\n"); 

       adapter = new ArrayAdapter<String>(getAppContext(),R.layout.activity_main); //xml file see below... 
       for(int i = 0; i < wifiList.size(); i++){ 
        adapter.add(" "+new Integer(i+1).toString() + ". "+ (wifiList.get(i)).toString()); 
       } 
       lv.setAdapter(adapter); 

       mainText.setText(sb); 
      } 

      private Context getAppContext() { 
       // TODO Auto-generated method stub 
       return null; 
      } 

     } 

     ////// DIALOG TIMEPICKER //////// 
     public void addButtonClickListener() { 

      btnClick = (Button) findViewById(R.id.btnClick); 

      btnClick.setOnClickListener(new OnClickListener() { 

       @Override 
       public void onClick(View v) { 

        showDialog(TIME_DIALOG_ID); 

       } 

      }); 

     } 


     @Override 
     protected Dialog onCreateDialog(int id) { 
      switch (id) { 
      case TIME_DIALOG_ID: 

       // set time picker as current time 
       return new TimePickerDialog(this, timePickerListener, hour, minute, 
         false); 

      } 
      return null; 
     } 

     private TimePickerDialog.OnTimeSetListener timePickerListener = new TimePickerDialog.OnTimeSetListener() { 


      @Override 
      public void onTimeSet(TimePicker view, int hourOfDay, int minutes) { 
       // TODO Auto-generated method stub 
       hour = hourOfDay; 
       minute = minutes; 

       // set current time into output textview 
       output.setText(new StringBuilder().append(utilTime(hour)) 
         .append(":").append(utilTime(minute))); 
      } 

     }; 

     private static String utilTime(int value) { 

      if (value < 10) 
       return "0" + String.valueOf(value); 
      else 
       return String.valueOf(value); 
     } 


     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 

     } 
    } 

아니면 누구나 wifi 연결 목록보기가 있습니까?

Answer 1

변수 :

private ListView lv; 
public ArrayAdapter<String> adapter; 

코드 :

... 
adapter = new ArrayAdapter<String>(getAppContext(),R.layout.listitem); //xml file see below... 
for(int i = 0; i < wifiList.size(); i++){ 
    adapter.add(" "+new Integer(i+1).toString() + ". "+ (wifiList.get(i)).toString()); 
} 
lv.setAdapter(adapter); 

listitem.xml :

<?xml version="1.0" encoding="utf-8"?> 
<TextView 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/listitem_intervals" 
    android:layout_width="match_parent" 
    <!-- //font attributes you want to use in the listView --> 
/> 

*의 코멘트보기 "getAppContext()"메소드