核心数据文件保存应用程序的库目录

在我的应用程序都存储在核心数据文件保存在应用程序的文件目录这样核心数据文件保存应用程序的库目录

- (NSPersistentStoreCoordinator *)persistentStoreCoordinator{ 

if (_persistentStoreCoordinator != nil) { 
    return _persistentStoreCoordinator; 
} 

NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"App.sqlite"]; 

NSError *error = nil; 
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]]; 
if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error]) { 

    NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
    abort(); 
}  

return _persistentStoreCoordinator;}

我怎么能核心数据文件存储里面的内应用程序的库目录。

来源

2013-09-30 Prabhu Natarajan

-(NSString*)applicationLibraryDirectory 
{ 
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES); 
    NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil; 
    return basePath; 
} 

- (NSPersistentStoreCoordinator *)persistentStoreCoordinator { 
    NSPersistentStoreCoordinator *persistentStoreCoordinator; 
    if (persistentStoreCoordinator != nil) { 
     return persistentStoreCoordinator; 
    } 
    NSError *error=nil; 
    NSString *storePath = [[self applicationLibraryDirectory] stringByAppendingPathComponent: @"sample.sqlite"]; 
    NSURL *storeUrl =[NSURL fileURLWithPath:storePath]; 
    persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]]; 
    NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil]; 

    if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:options error:&error]) 
    { 
     NSLog(@"store url %@",storeUrl); 
     NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
     exit(-1); 
    }  

    return persistentStoreCoordinator; 
}

来源

2013-09-30 11:56:00 karthika

它显示一个错误，如没有已知的类选择器'applicationLibraryDirectory'方法 –

更改静态方法，我编辑。请看看。 – karthika

NSURL *libraryDirectory = [NSFileManager defaultManager] URLsForDirectory:NSLibraryDirectory inDomains:NSUserDomainMask] lastObject]; 
NSURL *storeURL = [[self libraryDirectory] URLByAppendingPathComponent:@"App.sqlite"];

来源

2013-09-30 11:56:45 Abizern

它显示了一些关于不兼容指针转换的错误和警告。 –

使用'lastObject'修正 – Abizern

// If the coordinator doesn't already exist, it is created and the application's store added to it. 
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator{ 
NSPersistentStoreCoordinator *persistentStoreCoordinator; 
if (persistentStoreCoordinator != nil) { 
    return persistentStoreCoordinator; 
} 
NSError *error=nil; 
NSString *storePath = [[self applicationLibraryDirectory] stringByAppendingPathComponent: @"Arivanza.sqlite"]; 
NSURL *storeUrl =[NSURL fileURLWithPath:storePath]; 
persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]]; 
NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil]; 

if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:options error:&error]) 
{ 
    NSLog(@"store url %@",storeUrl); 
    NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
    exit(-1); 
} 

return persistentStoreCoordinator; 
}

这个完整的方法来解决我的问题，感谢您的帮助。

来源

2013-12-26 07:10:45

核心数据文件保存应用程序的库目录

回答

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