iOS报亭后台故障排除

问题描述

我正在启动一个报亭应用程序，首先我正在测试所有框架以查看谁都能正常工作.在前台时，我已经下载了由通知触发的问题.但是我不知道如何在后台下载，或者至少我缺少一些东西...这是我添加到plist的内容:

I'm starting a newsstand application and first I'm testing all the framework to see who everything works. I already downloaded an issue triggered by a notification when in foreground. but I don't know how to download in background, or at least I'm missing something... Here is the stuff I added to plist:

该应用程序针对IOS 5 ...这是我的代码...当然，我还实现了NKAssetDownload

The app is targeted for IOS 5... here is my code... of course I also implemented the three URLConection methods of NKAssetDownload

    - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if ([launchOptions objectForKey:UIApplicationLaunchOptionsNewsstandDownloadsKey] || [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey]) {
        NKLibrary *nkLib = [NKLibrary sharedLibrary];
        for(NKAssetDownload *asset in [nkLib downloadingAssets]) {
            [asset downloadWithDelegate:self];
        }
    }else{
        [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge |
                                                                               UIRemoteNotificationTypeSound |
                                                                               UIRemoteNotificationTypeAlert |
                                                                               UIRemoteNotificationTypeNewsstandContentAvailability
                                                                               )];
    }
    [[NSUserDefaults standardUserDefaults]setBool: YES forKey:@"NKDontThrottleNewsstandContentNotifications"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    return YES;
}

-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo{
NSLog(@"didReceiveRemoteNotification");
if (userInfo) {
    NKIssue *issue4 = [[NKLibrary sharedLibrary] issueWithName:@"01_Primera"];
    if (!issue4) {
        issue4= [[NKLibrary sharedLibrary] addIssueWithName:@"01_Primera" date:[NSDate date]];
    }
    if([issue4 status]==NKIssueContentStatusNone) {
        NSURL *downloadURL = [NSURL URLWithString:@"http://www.viggiosoft.com/media/data/blog/newsstand/magazine-4.pdf"];
        NSURLRequest *req = [NSURLRequest requestWithURL:downloadURL];
        NKAssetDownload *assetDownload = [issue4 addAssetWithRequest:req];
        [assetDownload downloadWithDelegate:self];
    }
}

}

我缺少什么，还有其他多余的代码吗?请帮忙.

What am I missing, and also do I have extra unnecessary code? please help.

推荐答案

• 如果要在iOS 7上测试带有内容可用:1的通知唤醒应用程序(在将其清除后)，则存在错误: 此处(使用您的开发者帐户登录).如果您要测试的设备尚未更新，则它应该可以在iOS 5-6上运行.

  • If you are testing waking up the app (after swiping it away) with a notification with content-available:1 on iOS7, it has a bug: read here and here (log in with your dev account).It should work on iOS 5-6, if you have a device to test that hasn't been updated.

    您还需要在Info.plist中输入密钥:所需的后台模式-报亭内容

    You also need a key in the Info.plist: Required background modes - newsstand-content

    最后，在代码中，我认为您应该在didFinishLaunchingWithOptions中进行一些更改:

    Finally in your code I think you should change a bit in your didFinishLaunchingWithOptions:

    if ([launchOptions objectForKey:UIApplicationLaunchOptionsNewsstandDownloadsKey] || [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey]) {
         [self handleNotification:launchOptions];
    }
    
    //...other code...
    
    //This code can be the same as with didReceiveRemoveNotification
    
    -(void) handleNotification:(NSDictionary*)userInfo{
    
        //check userInfo for "content-available" key
        //if there is content-available:1 check for an issue_id/content_id in the rest of the notification payload (userInfo), and download the issue
    
    }
    

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