转自:http://hi.baidu.com/moon_2009/item/352abc241fa1280b76272c03
public static boolean isConnect(Context context) {
// 获取手机所有连接管理对象(包括对wi-fi,net等连接的管理)
try {
ConnectivityManager connectivity = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
// 获取网络连接管理的对象
NetworkInfo info = connectivity.getActiveNetworkInfo();
if (info != null&& info.isConnected()) {
// 判断当前网络是否已经连接
if (info.getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
} catch (Exception e) {
// TODO: handle exception
Log.v("error",e.toString());
}
return false;
}