关于android的广播机制里面的网络状态监听 (Fragment实现)

关于android的广播机制里面的网络状态监听 (Fragment实现)

方法比较简单，直接上代码了

首先在Fragment 里定义一个类

class NetworkChangeReciver extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        // TODO Auto-generated method stub'        HomeActivity activity = (HomeActivity) getActivity();        ConnectivityManager connectivityManager = (ConnectivityManager) activity.getSystemService(context.CONNECTIVITY_SERVICE);        NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();        if (networkInfo != null && networkInfo.isAvailable())            Toast.makeText(context, "当前网络正常！", Toast.LENGTH_SHORT).show();            //网络正常的情况下 执行相关操作        else            Toast.makeText(context, "当前网络处于断网！", Toast.LENGTH_SHORT).show();    }}

其次覆盖此方法

@Overridepublic void onDestroy() {    // TODO Auto-generated method stub    super.onDestroy();    getActivity().unregisterReceiver(network);}

最后在 onCreateView（）方法注册广播监听

intentfile = new IntentFilter();intentfile.addAction("android.net.conn.CONNECTIVITY_CHANGE");network = new NetworkChangeReciver();getActivity().registerReceiver(network, intentfile);