小编Kum*_*hav的帖子

在Android 8.0上,没有使用wifiManager获取wifi列表,在API级别26以下我得到了列表.

此函数返回WifiManagerObject

public static WifiManager getWifiManager(Context context) {
        WifiManager wifiManager = null;
        try {

            wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);

        } catch (NullPointerException e) {
            e.printStackTrace();
        }

        return wifiManager;
    }

此函数返回wifi列表

public static List<ScanResult> getWifiScanResults(Boolean sorted, Context context) {
    WifiManager wifiManager = NetworkUtil.getWifiManager(context);
    List<ScanResult> wifiList = wifiManager.getScanResults();

    //Remove results with empty ssid
    List<ScanResult> wifiListNew = new ArrayList<>();
    for (ScanResult scanResult : wifiList) {
        if (!scanResult.SSID.equals(""))
            wifiListNew.add(scanResult);
    }
    wifiList.clear();
    wifiList.addAll(wifiListNew);

         return wifiList;
}

我注册了 BroadcastReceiver

WiFiMainActivity.this.registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)); …