在iOS中的應用程序處於後臺時發送Google Analytics事件

Question

當您將iOS應用程序移至後臺時發送事件時，Google Analytics的行爲如何？這些事件是否能夠提供服務？我們是否需要專門調用[[GAI sharedInstance] dispatch];在那些情況下？

Answer 1

首先，你絕對可以做你的建議，以：

[[GAI sharedInstance] dispatch]; 

上有谷歌Analytics（分析）背景第二調度here，基本上給你這個方法：

// This method sends any queued hits when the app enters the background. 
- (void)sendHitsInBackground { 
    __block BOOL taskExpired = NO; 

    __block UIBackgroundTaskIdentifier taskId = 
    [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{ 
    taskExpired = YES; 
    }]; 

    if (taskId == UIBackgroundTaskInvalid) { 
    return; 
    } 

    __weak AppDelegate *weakSelf = self; 
    self.dispatchHandler = ^(GAIDispatchResult result) { 
    // Send hits until no hits are left, a dispatch error occurs, or 
    // the background task expires. 
    if (result == kGAIDispatchGood && !taskExpired) { 
     [[GAI sharedInstance] dispatchWithCompletionHandler:weakSelf.dispatchHandler]; 
    } else { 
     [[UIApplication sharedApplication] endBackgroundTask:taskId]; 
    } 
    }; 

    [[GAI sharedInstance] dispatchWithCompletionHandler:self.dispatchHandler]; 
} 

覆蓋applicationDidEnterBackground ，如下所示：

- (void)applicationDidEnterBackground:(UIApplication *)application { 
    [self sendHitsInBackground]; 
} 

and overri de applicationWillEnterForeground，像這樣：

- (void)applicationWillEnterForeground:(UIApplication *)application { 
    // Restores the dispatch interval because dispatchWithCompletionHandler 
    // has disabled automatic dispatching. 
    [GAI sharedInstance].dispatchInterval = 120; 
}