Android 获取联网方式及代理联网

得到联网方式的方法

public String NetType(Context context) { 
try { 
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 
NetworkInfo info = cm.getActiveNetworkInfo(); 
String typeName = info.getTypeName().toLowerCase; // WIFI/MOBILE 
if(typeName.equals.("wifi")){ 
}else{
typeName = mActiveNetworkInfo.getExtraInfo().toLowerCase();
//3gnet/3gwap/uninet/uniwap/cmnet/cmwap/ctnet/ctwap 
}
return typeName;
} catch (Exception e) { 
return null; 
} 
} 

没有网络时会出现异常，位置为ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = cm.getActiveNetworkInfo();


使用代理联网时得到连接对象的方法

private HttpURLConnection getURLConnection(String url) throws Exception { 
String proxyHost = android.net.Proxy.getDefaultHost(); 
if (proxyHost != null) { 
java.net.Proxy p = new java.net.Proxy(java.net.Proxy.Type.HTTP, 
new InetSocketAddress(android.net.Proxy.getDefaultHost(), 
android.net.Proxy.getDefaultPort())); 

return (HttpURLConnection) new URL(url).openConnection(p); 

} else { 
return (HttpURLConnection) new URL(url).openConnection(); 
} 
} 

返回HttpURLConnection对象android.net.Proxy.getDefaultHost()得到手机设置的代理ip，得到android.net.Proxy.getDefaultPort()得到手机设置的端口；
也可以自己设置为 10.0.0.172 端口 80