监听wifi状态(android)

wifi_state.java

if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(intent.getAction())) {
	Parcelable parcelableExtra = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
	if (null != parcelableExtra) {
		NetworkInfo networkInfo = (NetworkInfo) parcelableExtra;
		if (networkInfo.getState() == State.CONNECTED) {
			netManager.start(true);
		} else if (networkInfo.getState() == State.DISCONNECTED) {
			Const.IS_CONNECTED = false;
			netManager.close();
			Intent netDis = new Intent(Const.NET_STATE_DISCONNECT);
			sendBroadcast(netDis);
		}
	}
}