Android 网络类型判断

在Android中经常用到网络状态和网络类型，不如网络为WIFI是做某一操作，网络为数据流量时做另一个操作。
以下是获取网络类型的示例代码：

    private void checkNetworkConnection() {
        String TAG = "Basic Network Demo";
        // Whether there is a Wi-Fi connection.
        boolean wifiConnected = false;
        // Whether there is a mobile connection.
        boolean mobileConnected = false;
        // BEGIN_INCLUDE(connect)
        ConnectivityManager connMgr =
                (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeInfo = connMgr.getActiveNetworkInfo();
        if (activeInfo != null && activeInfo.isConnected()) {
            wifiConnected = activeInfo.getType() == ConnectivityManager.TYPE_WIFI;
            mobileConnected = activeInfo.getType() == ConnectivityManager.TYPE_MOBILE;
            if (wifiConnected) {
                Log.i(TAG, "The active connection is wifi.");
            } else if (mobileConnected) {
                Log.i(TAG, "The active connection is mobile.");
            }
        } else {
            Log.i(TAG, "No wireless or mobile connection.");
        }
        // END_INCLUDE(connect)
    }