8

我使用了下面的代码，但它运行良好，但几个月后我得到了任何结果，而不是获得BSSID值。这是我的代码。请指导我任何其他替代方式。

 @SuppressLint("LongLogTag")
public void loadWifiAvailableList() {
    WifiManager wifiMan = (WifiManager) getApplicationContext().getSystemService(
            Context.WIFI_SERVICE);
    WifiInfo wifiInfo = wifiMan.getConnectionInfo();

    String macAddr = wifiInfo.getMacAddress();
    String bssid = wifiInfo.getBSSID();
   //here i am getting the proper bssid
    Log.d("bssid from get connection info",bssid);

    List<WifiConfiguration> list = wifiMan.getConfiguredNetworks();
    for( WifiConfiguration i : list ) {
        if(i.BSSID!=null)
     //here i am getting any from i.BSSID
        Log.d("bssid from get configured network",i.BSSID);

    }
}

在此处输入图像描述

4

3 回答 3

4

我也有同样的问题。我在广播接收器的帮助下解决了这个问题，并围绕它构建了自己的逻辑。

广播接收器类，确保清单中提供的权限ACCESS_WIFI_STATE和CHANGE_WIFI_STATE。

public class WifiChecker extends BroadcastReceiver {

    private OnWifiResultArrived onWifiResultArrived = null;
    private static boolean CAN_CALL_AGAIN = true;
    private WifiManager wifiManager;

    /**
     * @param context context of activity.
     * Remember to provide permission
     * <p>
     * {@code <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />},
     * {@code <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />}</p>
     */
    @SuppressLint("MissingPermission")
    public WifiChecker(Context context) {
        CAN_CALL_AGAIN = true;
        wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        context.registerReceiver(this, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
        wifiManager.startScan();

        rerunAgain();
    }

    private void rerunAgain() {
        new Handler().postDelayed(new Runnable() {
            @SuppressLint("MissingPermission")
            @Override
            public void run() {
                if (CAN_CALL_AGAIN)
                    wifiManager.startScan();

                rerunAgain();       //rerun the broadcast again
            }
        }, 1000);
    }

    public void addListerForWifiCallback(OnWifiResultArrived onWifiResultArrived) {
        this.onWifiResultArrived = onWifiResultArrived;
    }


    @SuppressLint("MissingPermission")
    @Override
    public void onReceive(Context context, Intent intent) {
        updateUi(wifiManager.getScanResults());
    }

    private void updateUi(final List<ScanResult> scanResults) {

        try {
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    try {
                        if (onWifiResultArrived != null)

                            onWifiResultArrived.isInWifiRange(scanResults);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }

                }
            }, 1000);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void unregisterListner(Context context) {
        this.onWifiResultArrived = null;
        CAN_CALL_AGAIN = false;
    }

    public interface OnWifiResultArrived {
        void isInWifiRange(List<ScanResult> scanResults);
    }
}

广播类的用户 要么实现广播接收类接口，即OnWifiResultArrived

WifiChecker checker = new WifiChecker(this);
checker.addListerForWifiCallback(this);

@Override
public void isInWifiRange(List<ScanResult> scanResults){
    //get your BSSID here
    scanResults.get(position).BSSID;
    //write your logic for checking weather it is connected or not
}

或者

WifiChecker checker = new WifiChecker(this);
checker.addListerForWifiCallback(@Override
public void isInWifiRange(List<ScanResult> scanResults){
    //get your BSSID here
    scanResults.get(position).BSSID;
   //write your logic for checking weather it is connected or not
});
于 2018-07-25T11:19:04.940 回答
2

要获取当前连接的 WIFI 网络的 BSSID，请使用 WiFiInfo 类。

WifiManager wifiMan = (WifiManager) context.getSystemService(
                        Context.WIFI_SERVICE);
        WifiInfo wifiInfo = wifiMan.getConnectionInfo();

        String macAddr = wifiInfo.getMacAddress();
        String bssid = wifiInfo.getBSSID();
于 2018-07-31T06:54:00.390 回答
0

我已经找到了一些解决方案，为什么我在 android 的getConfiguredNetworks() api 中得到任何字符串或空字符串。背后的原因是，如果我们在某些情况下具有相同的 SSID 和相同的密码，它将作为任何字符串或空字符串发送。因此，当您尝试连接相同的 ssid 时， getConfiguredNetworks()不是正确的方法。所以使用getScanResults() Api 而不是getConfiguredNetworks()。经过一些自己的研究，我发现了它。只有当您获得具有相同 ssid 和密码的AP列表时才会出现此问题。使用扫描结果并添加wifi 配置中的该网络然后连接它，但此方法在API 级别 26中已弃用。所以它不会从 api级别 26工作。参考链接

  //https://stackoverflow.com/a/8818490
        wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);

        //checking the right network.
        List<ScanResult> scanresults = wifiManager.getScanResults();
        {
            for (ScanResult scanresult : scanresults) {
                Log.d("scan result1", scanresult.BSSID + "");
 }}


 WifiConfiguration conf = new WifiConfiguration();
    conf.SSID = "\"" + networkSSID + "\"";
    conf.BSSID = Bssid;
  WifiManager wifiManager = (WifiManager)getApplicationContext().getSystemService(Context.WIFI_SERVICE);
  ///this wont work from api level 26
    wifiManager.addNetwork(conf);
    List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
    for (WifiConfiguration i : list) {
        if (i.BSSID != null && i.BSSID.equals(Bssid)) {
            wifiManager.disconnect();
            wifiManager.enableNetwork(i.networkId, true);
            wifiManager.reassociate();
            Log.d("changing network", "connecting the right network");
            break;
        }

    }
于 2018-07-26T08:00:53.903 回答