Ok so I am trying to get this app to show network error alert codes. I have added the SystemConfiguration.framework framework and Apple's "Reachability" sample code.
Here is the viewcontroller.h file:
#import <UIKit/UIKit.h>
@class Reachability;
@interface Test_Internet_ConnectionViewController : UIViewController {
Reachability* internetReachable;
Reachability* hostReachable;
}
@property BOOL internetActive;
@property BOOL hostActive;
- (void) checkNetworkStatus:(NSNotification *)notice;
@end
Here is the viewcontroller.m file:
#import "Test_Internet_ConnectionViewController.h"
#import "Reachability.h";
@implementation Test_Internet_ConnectionViewController
@synthesize internetActive;
@synthesize hostActive;
/*
// The designated initializer. Override to perform setup that is required before the view is loaded.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
*/
/*
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
}
*/
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
// check for internet connection
[[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
}
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void) checkNetworkStatus:(NSNotification *)notice
{
// called after network status changes
NetworkStatus internetStatus = [internetReachable currentReachabilityStatus];
switch (internetStatus)
{
case NotReachable:
{
NSLog(@"The internet is down.");
self.internetActive = NO;
UIAlertView *errorView = [[UIAlertView alloc] initWithTitle:@"Internet Unavailable" message:@"This page cannot load, please check your internet connection and try again." delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil];
[errorView show];
[errorView release];
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;
}
}
}
- (void)dealloc {
[super dealloc];
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
@end
If there is no internet upon opening the app the error works as intended, but if the app loses connection after the it has initially opened with an internet connection the error displays 3 times, when I obviously only want it to display once.
I think it may be something in the Reachability class where it sends the notification 3 times, maybe in 3 different places. I don't know why it does this, but I think the solution may be to remove the two calls I don't want from the Reachability class but I don't know how.
Can anyone help me, please? Thanks in advance.
EDIT:
The 8 warnings and 4 errors are as follows:
'TestViewController' may not respond to '+checkConnectivity'
Initialization makes integer from pointer without a cast
Local declaration of 'connectivity' hides instance variable
'MyReachability' undeclared
'reachability' undeclared
'TestViewController' may not respond to '-siteAvailable'
'TestViewController' may not respond to '-addConnectivityView'
Redefinition of '-[TestViewController reachabilityChanged:]'
'MyReachability' undeclared
TestViewController may not respond to '-siteAvailable'
TestViewController may not respond to '-addConnectivityView'
TestViewController may not respond to '-removeConnectivityView'
