Android 调用函数打开/关闭WiFi 以及判断网络是否可用

调用函数打开/关闭WiFi

 // 获取当前apk的WiFi Service
  WifiManager      wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        // 调用函数打开/关闭WiFi,status为boolean变量true/false
        boolean wifiEnabled = wifiManager.isWifiEnabled();
        if (!wifiEnabled) {
            wifiManager.setWifiEnabled(true);
        }

判断网络是否可用：

    public boolean isNetworkAvailable(Activity activity) {
        Context context = activity.getApplicationContext();
        // 获取手机所有连接管理对象（包括对wi-fi,net等连接的管理）
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        if (connectivityManager == null) {
            return false;
        } else {
            // 获取NetworkInfo对象
            NetworkInfo[] networkInfo = connectivityManager.getAllNetworkInfo();

            if (networkInfo != null && networkInfo.length > 0) {
                for (int i = 0; i < networkInfo.length; i++) {
                    // 判断当前网络状态是否为连接状态
                    if (networkInfo[i].getState() == NetworkInfo.State.CONNECTED) {
                        BKLogUtil.print("网络可用");
                        return true;
                    }
                }
            }
        }
        BKLogUtil.print("网络不可用");
        return false;
    }