使用ConnectivityManager监听网络状态变化

mIntenFilter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);    mConnectivityManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);    mReceiver = new BroadcastReceiver() {@Overridepublic void onReceive(Context context, Intent intent) {if (intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, false)) {Log.i(TAG, "netWork has lost");}NetworkInfo tmpInfo = (NetworkInfo) intent.getExtras().get(ConnectivityManager.EXTRA_NETWORK_INFO);Log.i(TAG, tmpInfo.toString() + " {isConnected = " + tmpInfo.isConnected() + "}");}};

?程序第一次启动时会收到一个Broadcast?

从 GPRS 到 WIFI，程序至少会收到3个Broadcast?
第一个是连接到WIFI?
第二个是断开GPRS?
第三个是连接到WIFI?

从WIFI到GPRS，程序至少会收到2个Broadcast?
第一个是断开Wifi?
第二个是连接到GPRS?