WIFI的状态判断

判断无线网是否打开

• 权限

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

• 代码

 public static boolean isWifiAviliable(Context context) {        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);        return wifiManager.isWifiEnabled();    }

判断无线网是否可用

• 权限

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

• 代码

 public static boolean isWifiConnected(Context context) {        ConnectivityManager connectivity = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        if (connectivity == null) {        } else {            NetworkInfo[] info = connectivity.getAllNetworkInfo();            if (info != null) {                for (int i = 0; i < info.length; i++) {                    if (info[i].getState() == NetworkInfo.State.CONNECTED) {                        return true;                    }                }            }        }        return false;    }