HttpClient判断网络是否连接

以HttpClient连接为例:

HttpClient httpClient=new DefaultHttpClient();

ConnectivityManager manager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);

NetworkInfo networkinfo = manager.getActiveNetworkInfo();

String net = networkinfo.getExtraInfo();//获取网络类型

if (net != null)//wifi的值为空，这里判断下

{ if (net.equals("cmwap"))

{ HttpHost proxy = new HttpHost("10.0.0.172", 80);//设置cmwap代理

httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);

}

} //HttpGet .....

记得加上这个权限 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>