iOS 7 - Background Fetching (CocoaHeads Lyon octobre 2013)

Billet de blog associé : http://www.vtourraine.net/blog/ios-7-background-fetching

Transcript

1. Background Fetching CocoaHeads Lyon - octobre 2013 Vincent Tourraine - shazino
2. Pour quoi faire ? ➡ Télécharger des nouvelles données sans ouvrir l’application ➡ Exécution régulière en tâche de fond
3. Mise en place
4. Configuration du projet
5. Info.plist <key>UIBackgroundModes</key> <array> <string>fetch</string> </array>
6. Définir l’intervalle - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { [application setMinimumBackgroundFetchInterval: UIApplicationBackgroundFetchIntervalMinimum]; // ... }
7. Appel en tâche de fond - (void)application:(UIApplication *)application performFetchWithCompletionHandler: (void (^)(UIBackgroundFetchResult))completionHandler { [self.manager GET:@"http://example.com/resources.json" parameters:nil success:^(id operation, id responseObject) { completionHandler(UIBackgroundFetchResultNewData); } failure:^(id operation, NSError *error) { completionHandler(UIBackgroundFetchResultFailed); }]; }
8. Debug
9. Configuration du scheme
10. Plus d’infos • UIApplication Class Reference https://developer.apple.com/library/ios/documentation/uikit/reference/ UIApplication_Class/Reference/Reference.html • UIApplicationDelegate Protocol Reference https://developer.apple.com/library/ios/documentation/uikit/reference/ UIApplicationDelegate_Protocol/Reference/Reference.html