iPhone application freeze when out of range from wifi connection? - wifi

Question

i have developed a radio application which uses network connection for online streaming, and also i am checking the condition whether network is available or not. if no network connection, it shows an alert "their is no network available" .my code is here
- (void)viewDidLoad
{
[super viewDidLoad];
//checking network reachability statys, this will show one alert view if no network available
Reachability* reachabile = [Reachability reachabilityWithHostName:#"www.apple.com"];
NetworkStatus remoteHostStatus = [reachabile currentReachabilityStatus];
if(remoteHostStatus == NotReachable)
{
NSLog(#"not reachable");
UIAlertView *notReachableAlert1=[[UIAlertView alloc]initWithTitle:#"NO INTERNET CONNECTION" message:#"This Application Need Internet To Run" delegate:self cancelButtonTitle:#"Okay Buddy" otherButtonTitles:nil];
notReachableAlert1.delegate=self;
[notReachableAlert1 show];
[notReachableAlert1 release];
}
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(moviePlayerPlaybackStateDidChange:)
name:MPMoviePlayerPlaybackStateDidChangeNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(moviePlayerLoadStateChanged:) name:MPMoviePlayerLoadStateDidChangeNotification object:player];
// Do any additional setup after loading the view from its nib.
}
also i checked the condition on notifications
-(void) moviePlayerPlaybackStateDidChange:(NSNotification*)notification
{
Reachability* reachabile = [Reachability reachabilityWithHostName:#"www.apple.com"];
NetworkStatus remoteHostStatus = [reachabile currentReachabilityStatus];
NSLog(#"playbackDidChanged");
MPMoviePlayerController *moviePlayer = notification.object;
player=notification.object;
MPMoviePlaybackState playbackState = moviePlayer.playbackState;
if(playbackState == MPMoviePlaybackStateStopped)
{
NSLog(#"MPMoviePlaybackStateStopped");
}
else if(playbackState == MPMoviePlaybackStatePlaying) {
NSLog(#"MPMoviePlaybackStatePlaying");
} else if(playbackState == MPMoviePlaybackStatePaused) {
NSLog(#"MPMoviePlaybackStatePaused");
if(remoteHostStatus == NotReachable)
{
NSLog(#"not reachable");
UIAlertView *notReachableAlert1=[[UIAlertView alloc]initWithTitle:#"NO INTERNET CONNECTION" message:#"This Application Need Internet To Run" delegate:self cancelButtonTitle:#"Okay Buddy" otherButtonTitles:nil];
notReachableAlert1.delegate=self;
[notReachableAlert1 show];
[notReachableAlert1 release];
}
} else if(playbackState == MPMoviePlaybackStateInterrupted)
{
NSLog(#"MPMoviePlaybackStateInterrupted");
if((remoteHostStatus == NotReachable)&&(remoteHostStatus != ReachableViaWiFi))
{
NSLog(#"not reachable");
UIAlertView *notReachableAlert1=[[UIAlertView alloc]initWithTitle:#"NO INTERNET CONNECTION" message:#"This Application Need Internet To Run" delegate:self cancelButtonTitle:#"Okay Buddy" otherButtonTitles:nil];
notReachableAlert1.delegate=self;
[notReachableAlert1 show];
[notReachableAlert1 release];
}
my problem is, when app goes out of range from wifi connection without without 3g and normal data connection, it freezes for some time. and when i came back to range only it goes to active state and shows alert.
is their anything wrong i did with network availability checking?

Answer 1

this is sample u can edit based on ur application
#class Reachability;
#interface urAppDelegate : NSObject <UIApplicationDelegate>
{
Reachability* internetReachable;
Reachability* hostReachable;
BOOL hostActive;
BOOL internetActive;
}
#property (nonatomic, assign) BOOL hostActive;
#property (nonatomic, assign) BOOL internetActive;
#end
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
self.internetActive=NO;
self.hostActive=NO;
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(checkNetworkStatus:) name:kReachabilityChangedNotification object:nil];
internetReachable = [[Reachability reachabilityForInternetConnection] retain];
[internetReachable startNotifier];
// check if a pathway to a random host exists
hostReachable = [[Reachability reachabilityWithHostName: #"www.apple.com"] retain];
[hostReachable startNotifier];
// now patiently wait for the notification
[self.window makeKeyAndVisible];
return YES;
}
-(void) checkNetworkStatus:(NSNotification *)notice{
NetworkStatus internetStatus = [internetReachable currentReachabilityStatus];
switch (internetStatus)
{
case NotReachable:
{
NSLog(#"The internet is down.");
self.internetActive = NO;
break;
}
case ReachableViaWiFi:
{
NSLog(#"The internet is working via WIFI.");
self.internetActive = YES;
break;
}
case ReachableViaWWAN:
{
NSLog(#"The internet is working via WWAN.");
self.internetActive = YES;
break;
}
}
NetworkStatus hostStatus = [hostReachable currentReachabilityStatus];
switch (hostStatus)
{
case NotReachable:
{
NSLog(#"A gateway to the host server is down.");
self.hostActive = NO;
break;
}
case ReachableViaWiFi:
{
NSLog(#"A gateway to the host server is working via WIFI.");
self.hostActive = YES;
break;
}
case ReachableViaWWAN:
{
NSLog(#"A gateway to the host server is working via WWAN.");
self.hostActive = YES;
break;
}
}
if (internetActive && hostActive)
{
// Net work Available.......
}
else
{
UIAlertView *netWorkAlert=[[UIAlertView alloc]initWithTitle:#"Network Connection Error" message:#"Please Check Connection" delegate:nil cancelButtonTitle:#"Close" otherButtonTitles:nil, nil];
[netWorkAlert show];
[netWorkAlert release];
}
}