IOS Off-screen processing

IOS Off-screen processing(2014-01-13 18:13:21) reproduced

Tags: it

-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (nsdictionary *) launchOptions

{

Self.window = [[[UIWindow alloc] initwithframe:[[uiscreen mainscreen] bounds]] autorelease];

Turn on network condition monitoring

[[Nsnotificationcenter Defaultcenter] addobserver:self selector: @selector (reachabilitychanged:) Name: Kreachabilitychangednotification Object:nil];

Self.hostreach = [reachability reachabilitywithhostname:@ "www.baidu.com"];

[Self.hostreach Startnotifier]; Start listening, a run loop is started

Self.window.rootViewController = Self.tabbarcontroller;

[Self.window makekeyandvisible];

return YES;

}

The method that will be called when the network link changes

-(void) reachabilitychanged: (nsnotification *) Note

{

reachability *currreach = [Note Object];

Nsparameterassert ([Currreach iskindofclass:[reachability class]]);

Respond to changes in connection to process actions

NetworkStatus status = [Currreach currentreachabilitystatus];

Pop-up reminder if not connected to the network

self.isreachable = YES;

if (status = = Notreachable)

{

Uialertview *alert = [[Uialertview alloc] initwithtitle:@ "Network connection exception" message:@ "temporarily unable to access bookstore information" Delegate:nil Cancelbuttontitle: @ "OK" otherbuttontitles:nil];

[Alert show];

[Alert release];

self.isreachable = NO;

}

Else

{

Uialertview *alert = [[Uialertview alloc] initwithtitle:@ "Network connection Information" message:@ "Network connection OK" Delegate:nil cancelbuttontitle:@ " Determine "Otherbuttontitles:nil";

[Alert show];

[Alert release];

self.isreachable = YES;

}

}

-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (nsdictionary *) launchOptions

{

Self.window = [[[UIWindow alloc] initwithframe:[[uiscreen mainscreen] bounds]] autorelease];

Turn on network condition monitoring

[[Nsnotificationcenter Defaultcenter] addobserver:self selector: @selector (reachabilitychanged:) Name: Kreachabilitychangednotification Object:nil];

Self.hostreach = [reachability reachabilitywithhostname:@ "www.baidu.com"];

[Self.hostreach Startnotifier]; Start listening, a run loop is started

Self.window.rootViewController = Self.tabbarcontroller;

[Self.window makekeyandvisible];

return YES;

}

The method that will be called when the network link changes

-(void) reachabilitychanged: (nsnotification *) Note

{

reachability *currreach = [Note Object];

Nsparameterassert ([Currreach iskindofclass:[reachability class]]);

Respond to changes in connection to process actions

NetworkStatus status = [Currreach currentreachabilitystatus];

Pop-up reminder if not connected to the network

self.isreachable = YES;

if (status = = Notreachable)

{

Uialertview *alert = [[Uialertview alloc] initwithtitle:@ "Network connection exception" message:@ "temporarily unable to access bookstore information" Delegate:nil Cancelbuttontitle: @ "OK" otherbuttontitles:nil];

[Alert show];

[Alert release];

self.isreachable = NO;

}

Else

{

Uialertview *alert = [[Uialertview alloc] initwithtitle:@ "Network connection Information" message:@ "Network connection OK" Delegate:nil cancelbuttontitle:@ " Determine "Otherbuttontitles:nil";

[Alert show];

[Alert release];

self.isreachable = YES;

}

}

Using the code above, you can use the following singleton to determine whether the network is connected in any one of the application's interfaces

[CPP] View plaincopyprint?

Appdelegate *appdlg = (appdelegate *) [[uiapplication sharedapplication] delegate];

if (appdlg.isreachable)

{

NSLog (@ "Network is connected");//code to perform network uptime

}

Else

{

NSLog (@ "Network connection exception");//code to execute network exception

}

IOS Off-screen processing