Android获取当前连接wifi的信道

概述做网络诊断，需要诊断当前wifi所在信道是否拥挤，目前只是解决了获取当前wifi所在信道，主要是用ScanResult的frequency字段，还需要用SSID和BSSID从ScanResults匹配到当前的wifi信号wifiInfo，具体代码如下：publicstaticintgetCurrentChannel(Contextcontext){

做网络诊断，需要诊断当前wifi所在信道是否拥挤，目前只是解决了获取当前wifi所在信道，主要是用ScanResult 的frequency字段，还需要用SSID和BSSID从ScanResults匹配到当前的wifi信号wifiInfo，具体代码如下：

        public static int getCurrentChannel(Context context) {            WifiManager wifiManager = (WifiManager) context                    .getSystemService(Context.WIFI_SERVICE);                 WifiInfo wifiInfo = wifiManager.getConnectionInfo();// 当前wifi连接信息            List<ScanResult> scanResults = wifiManager.getScanResults();            for (ScanResult result : scanResults) {                if (result.BSSID.equalsIgnoreCase(wifiInfo.getBSSID())                        && result.SSID.equalsIgnoreCase(wifiInfo.getSSID()                                .substring(1, wifiInfo.getSSID().length() - 1))) {                    return getChannelByFrequency(result.frequency);                }            }                 return -1;        }

     /**      * 根据频率获得信道      *       * @param frequency      * @return      */     public static int getChannelByFrequency(int frequency) {         int channel = -1;         switch (frequency) {         case 2412:             channel = 1;             break;         case 2417:             channel = 2;             break;         case 2422:             channel = 3;             break;         case 2427:             channel = 4;             break;         case 2432:             channel = 5;             break;         case 2437:             channel = 6;             break;         case 2442:             channel = 7;             break;         case 2447:             channel = 8;             break;         case 2452:             channel = 9;             break;         case 2457:             channel = 10;             break;         case 2462:             channel = 11;             break;         case 2467:             channel = 12;             break;         case 2472:             channel = 13;             break;         case 2484:             channel = 14;             break;         case 5745:             channel = 149;             break;         case 5765:             channel = 153;             break;         case 5785:             channel = 157;             break;         case 5805:             channel = 161;             break;         case 5825:             channel = 165;             break;         }         return channel;     }

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