Android如何判断网络类型:WIFI还是3G

Context context = listActivity.getApplicationContext();//获取应用上下文

ConnectivityManager connectivityManager = (ConnectivityManager) context

.getSystemService(Context.CONNECTIVITY_SERVICE);//获取系统的连接服务

NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();//获取网络的连接情况

if(activeNetInfo.getType()==ConnectivityManager.TYPE_WIFI){

//判断WIFI网

}else if(activeNetInfo.getType()==ConnectivityManager.TYPE_MOBILE) {

//判断3G网

}