iOS 7 - Background Fetching (CocoaHeads Lyon octobre 2013)

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