Android app-get the message about standby, wake-up, shutdown, and network status change

Source: Internet
Author: User
1) Standby:Broadcast message: Android. Intent. Action. screen_off (CODE) 2) Wake up:
Broadcast message: Android. Intent. Action. screen_on (CODE)
3) shutdown:Broadcast message: Android. Intent. Action. action_shutdown (XML or code) 4) network status changes:
Broadcast message: android.net. Conn. connectivity_change
(XML or code) then call the following isnetworkavailable to get the current network status.
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 ;}

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