無法獲取路由器在範圍內的Android N

我想獲得範圍內的所有路由器，並顯示它在列表視圖，但面臨的問題在Android n及以上。我能夠得到所有的路由器，並在Android 5棒棒糖和低於棒棒糖列表視圖中顯示它，但它不適用於Android N和以上。我正在做它的碎片。無法獲取路由器在範圍內的Android N

這是我的代碼。

public class Add_Router extends android.support.v4.app.Fragment { 
public Add_Router() { 
} 

ArrayList<AR_Router> ar_router; 
WifiManager mWifiManager; 
ListView lv; 
ProgressDialog pd; 
String adm_token; 

@Override 
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
    View v = inflater.inflate(R.layout.frag_addrouter, container, false); 
    setHasOptionsMenu(true); 
    adm_token = getArguments().getString("adm_token"); 
    pd = new ProgressDialog(getActivity(), R.style.pdtheme); 
    pd.setCancelable(false); 
    pd.setProgressStyle(android.R.style.Widget_ProgressBar_Small); 
    ar_router = new ArrayList<>(); 
    lv = (ListView) v.findViewById(R.id.lv); 

    //get all wifi devices 
    pd.show(); 
    mWifiManager = (WifiManager) getActivity().getApplicationContext().getSystemService(Context.WIFI_SERVICE); 
    getActivity().registerReceiver(mWifiScanReceiver, 
      new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)); 
    mWifiManager.startScan(); 


    return v; 
} 

private final BroadcastReceiver mWifiScanReceiver = new BroadcastReceiver() { 
    @Override 
    public void onReceive(Context c, Intent intent) { 
     try{ 
     if (intent.getAction().equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) { 
      List<ScanResult> mScanResults = mWifiManager.getScanResults(); 
      if (!ar_router.isEmpty()) { 
       ar_router.clear(); 
      } 
      for (int i = 0; i < mScanResults.size(); i++) { 
       String router_name = mScanResults.get(i).SSID.toString(); 
       String router_mac = mScanResults.get(i).BSSID.toString(); 
       Log.d("router : ","rout:"+router_name); 
       AR_Router router = new AR_Router(); 
       router.arString_routerName = router_name; 
       router.arString_routerMac = router_mac; 
       ar_router.add(router); 

      } 
      CustomAdapter ca = new CustomAdapter(getActivity(), R.layout.cstm_router, R.id.tv_router_Name, ar_router); 
      lv.setAdapter(ca); 
      pd.dismiss(); 
     }}catch (Exception e){ 
      e.printStackTrace(); 
     } 
    } 
};

這是我的自定義適配器。

 class CustomAdapter extends ArrayAdapter<AR_Router> { 
    public CustomAdapter(Context context, int resource, int textViewResourceId, ArrayList<AR_Router> objects) { 
     super(context, resource, textViewResourceId, objects); 
    } 

    @Override 
    public View getView(final int position, View convertView, ViewGroup parent) { 
     LayoutInflater inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     final View v = inflater.inflate(R.layout.cstm_router, parent, false); 
     final TextView router_name = (TextView) v.findViewById(R.id.tv_router_Name); 
     final TextView router_mac = (TextView) v.findViewById(R.id.router_mac); 

     AR_Router ar_rout = ar_router.get(position); 
     router_name.setText(ar_rout.arString_routerName); 
     router_mac.setText(ar_rout.arString_routerMac); 

     return v; 

    } 
}

這裏是數組類

 //array class 
private class AR_Router { 
    String arString_routerName; 
    String arString_routerMac; 
}

來源

2017-09-21 ASIF RAZA

嘗試使用位置ON。打開您的位置，然後嘗試。 –

嘗試添加棉花糖位置權限 –

很棒。它通過添加ACCESS_FINE_LOCATION權限來工作。非常感謝@SardarKhan –

嘗試使用位置ON。打開您的位置，然後嘗試。在清單文件ACCESS_FINE_LOCATION中添加權限。

來源

2017-09-21 12:36:10

無法獲取路由器在範圍內的Android N

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