Use broadcast to update network status changes in real time

If the network is suddenly disconnected, we should promptly remind the user that the network has been disconnected. To achieve this function, we can receive a broadcast that the network status has changed from the connection status to the disconnected status, the system will send a broadcast. After receiving the broadcast, we can perform corresponding operations through the network status.

Public class networkstatereceiver extends broadcastreceiver {

@ Override

Public void onreceive (context, intent ){

If (! Isnetworkavailable (context )){

// Network unavailable operation

} Else {

// Available network operations

}

}

/**

* Whether the Network is available

*

*/

Public static Boolean isnetworkavailable (context ){

Connectivitymanager Mgr = (connectivitymanager) Context. getsystemservice (context. connectivity_service );

Networkinfo [] info = Mgr. getallnetworkinfo ();

If (info! = NULL ){

For (INT I = 0; I <info. length; I ++ ){

If (info [I]. getstate () = networkinfo. state. Connected ){

Return true;

}

}

}

Return false;

}

}

Register the receiver information again:

<Cycler Android: Name = ". networkstatereceiver">

<Intent-filter>

<Action Android: Name = "android.net. Conn. connectivity_change"/>

<Category Android: Name = "android. Intent. Category. Default"/>

</Intent-filter>

</Cycler>

You must also add the following network restrictions:

<Uses-Permission Android: Name = "android. Permission. access_network_state"/>

Use broadcast to update network status changes in real time