求一段android连cmwap网络的代码

Question

public void connect(String httpUrl){
String host = null;
ConnectivityManager connectivityManager = (ConnectivityManager) activity
.getSystemService(activity.CONNECTIVITY_SERVICE);
NetworkInfo networkinfo = connectivityManager.getActiveNetworkInfo();
if(networkinfo.getExtraInfo().equals("cmwap")){
    httpUrl = httpUrl.substring(7);
    host = httpUrl.substring(0, httpUrl.indexOf("/"));
    httpUrl = httpUrl.substring(httpUrl.indexOf("/"));
    httpUrl = "http://10.0.0.172:80" + httpUrl;
}
 URL url = new URL(httpUrl);
 HttpURLConnection conn = (HttpURLConnection) url.openConnection();
 if(networkinfo.getExtraInfo().equals("cmwap")){
    conn.setRequestProperty("X-Online-Host", host);
 }
}