android 判断是否联网

Question

手机连着wifi,然后现在给路由器拔了网线，手机如何判断是否联网？

Answer 1

protected void registerNetworkStatusListener() {
                if (m_networkReceiver == null) {
                        m_networkReceiver = new BroadcastReceiver() {
                                @Override
                                public void onReceive(Context context, Intent intent) {
                                        if (intent.getAction().equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
                                                boolean down = intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CON
NECTIVITY, false);
                                                onNetworkToggle(!down);
                                            }                                }                                private void onNetworkToggle(boolean bIsUp) {
                                    if (bIsUp == true) {
                                        hideDialog(DIALOG_ID.NETWORK_DISCONNECT);
                                        //断网
                                        
                                        return;
                                    }else{
                                        showDialog(DIALOG_ID.NETWORK_DISCONNECT);
                                        //联网
    //stopSearchMeidaTasks();
                                    }
                                }
                        };                        IntentFilter iFilter = new IntentFilter();
                        iFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
                        registerReceiver(m_networkReceiver, iFilter);
                }
        }
自己在oncreate里面调用注册此函数
在onDestroy里面解除就可以了,里面用不到的变量就去掉

Answer 2

你好，谢谢。
是wifi拔掉网线，好像不触发：CONNECTIVITY_ACTION，手机连着wifi路由器