android连接到互联网事件

Question

是否有事件告诉我设备已连接到互联网(3G 或 wifi)？我需要在设备连接到 INTERNET 后才开始一些请求。代码需要支持Android 2.1。谢谢

Answer 1

您可以使用广播接收器并等待操作 ConnectivityManager.CONNECTIVITY_ACTION

这里是 doc

例如:

broadcastReceiver = new BroadcastReceiver() {

                @Override
                public void onReceive(Context context, Intent intent) {

                    ConnectivityManager connectivity = (ConnectivityManager) context
                            .getSystemService(Context.CONNECTIVITY_SERVICE);


                        NetworkInfo[] info = connectivity.getAllNetworkInfo();
                        //Play with the info about current network state


                    }

                }
            };

            intentFilter = new IntentFilter();
            intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
            registerReceiver(broadcastReceiver, intentFilter);