StackOverflow2013

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plurals

PO
primarykey
Id
12452605
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2012-09-17T02:49:11.523
FavoriteCount
0
LastActivityDate
2012-09-17T02:49:11.523
LastEditDate
2017-05-23T12:24:48.537
LastEditorUserId
-1
OwnerUserId
1421549
ParentId
12446937
PostTypeId
2
Score
0
ViewCount
0
LastEditorDisplayName
text
Body
I've solved this problem, thanks to this post<a href="https://stackoverflow.com/a/2539547/1421549">iPhone: Can access files in documents directory in Simulator, but not device</a> In this post he referenced this blog :<a href="http://majicjungle.com/blog/123/" rel="nofollow noreferrer">Xcode resource groups and folder references when building for iPhone</a> After solving my problem, I've come to realize the reason that preload sqlite database won't work in device is: when Xcode copy database to the device from the bundle, the folder layers(myDB/StoreContent/persistentStore) wrapping the persistentStore is removed. So there is only a persistentStore file mixed with all other files in the device in the myApp.app bundle. And when you use UIManagedDocument to access sqlite database, it can only work with sqlite in such directory structure: myDB/StoreContent/persistentStore. So, with only a naked persistentStore file, the UIManagedDocument will create a whole new directory structure for you, with an empty persistentStore in it. If someone can suggest a way for UIManagedDocument to work with the persistentStore file without folder layers, I would be interested. And I use this code to access the DB after I successfully replicate the directory structure in my device bundle: <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { if (!self.myDataBase) { NSURL *url = [[NSBundle mainBundle] resourceURL]; url = [url URLByAppendingPathComponent:@"myDB/"]; self.myDataBase = [[UIManagedDocument alloc] initWithFileURL:url]; } return YES; } </code></pre>
Tags
Title
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PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POPreload sqlite database creating by UIManagedDocument, running Ok in iphone simulator, refusing to work in iphone Device
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USCommunity
UserOwnerUserId
1. USfrankskywalker
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1. This table or related slice is empty.
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1. This table or related slice is empty.
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