Android determines the network status and opens the Network Settings dialog box when there is no network.

When using Android to connect to the network, it is not always possible to connect to the network. At this time, we 'd betterProgramMake a judgment on the network status when starting. If there is no network, immediately remind the user to set it.

To determine the network status, you must first have the corresponding permissions. The following are the permissions:Code:

That is, access to the network status is allowed:

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

 

The following is the judgment code:

 

Code

  Private     Boolean  Networkstatus (){

  Boolean  Netsataus  =     False  ;
Connectivitymanager cwjmanager  =  (Connectivitymanager) getsystemservice (context. connectivity_service );

Cwjmanager. getactivenetworkinfo ();

 If  (Cwjmanager. getactivenetworkinfo ()  ! =     Null  ){
Netsataus  =  Cwjmanager. getactivenetworkinfo (). isavailable ();
}

  If  (Netsataus ){
Builder B  =     New  Alertdialog. Builder (  This ). Settitle (  "  No available network  "  )
. Setmessage (  "  Set the network?  "  );
B. setpositivebutton (  "  Yes  "  ,  New  Dialoginterface. onclicklistener (){
  Public    Void  Onclick (dialoginterface dialog,  Int  Whichbutton ){
Intent mintent  =     New  Intent (  "  /  "  );
Componentname comp  =     New Componentname (
  "  Com. Android. Settings  "  ,
  "  Com. Android. settings. wirelesssettings  "  );
Mintent. setcomponent (COMP );
Mintent. setaction (  "  Android. Intent. Action. View  "  );
Startactivityforresult (mintent,  0 );  //  If you need to perform the operation again after the setting is complete, you can rewrite the operation code.  
  }
}). Setneutralbutton (  "  No  "  ,  New  Dialoginterface. onclicklistener (){
  Public     Void  Onclick (dialoginterface dialog, Int  Whichbutton ){
Dialog. Cancel ();
}
}). Show ();
}

  Return  Netsataus;
} 

 

The above code can be used to determine the network status! How can I set the network by myself? I haven't figured it out yet. I'll try again later!