CODEWITHSUNDEEP
iosreachability
LilMoke
LilMoke

Reputation: 3444

iOS check network in AppDelegate?

I have an app that relies on a network connection being available. I have implemented reachability code to check for a network and/or host. However, my question is this… if I do this check in didFinishLaunchingWithOptions can i just put up an alert indicating to the user that the app needs a network and then gracefully exit the app? I have read mixed info on this and am unsure of how I can exit the app in a way such that Apple is happy and does not reject our app.

Upvotes: 0

Views: 2050

Answers (3)

washloops
washloops

Reputation: 147

Look for Reachability.h in https://github.com/tonymillion/Reachability.

Once you've implemented Reachability.h:

Reachability *reachability = [Reachability reachabilityWithHostname:@"www.google.com"];

reachability.reachableBlock = ^(Reachability *reachability) {
    [[NSUserDefaults standardUserDefaults] setObject:@"YES" forKey:@"IsConnected"];
    NSLog(@"Network is reachable.");
};

reachability.unreachableBlock = ^(Reachability *reachability) {
    [[NSUserDefaults standardUserDefaults] setObject:@"NO" forKey:@"IsConnected"];
    NSLog(@"Network is unreachable.");
};

[reachability startNotifier];

Each block will run every time the mobile connects or disconnects to the internet.

Hope it helps

Upvotes: 1

djibouti33
djibouti33

Reputation: 12132

Is there a reason you need to exit the app for the user?

Instead of an alert, why not just add a UIView with messaging explaining why your app won't work without a connection, and let the user exit themselves.

Exiting for the user is pretty aggressive and will probably look like your app crashed.

Upvotes: 1

rmaddy
rmaddy

Reputation: 318804

If your app can't do anything at all unless there is a network connection, then show the alert view with no buttons.

But have your app deal with a network connection becoming available. If one becomes available, automatically dismiss the alert view and let the app run normally.

There is no need to force the app to terminate.

Update - based on some comments:

It would be much better to put the reachability check in the main view controller. Then it can be smart enough to deal with a lack of network. This handles no initial network as well as the network becoming unavailable as the app runs.

Upvotes: 2

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