相关疑难解决方法(0)

https://developer.apple.com/library/ios/releasenotes/DataManagement/WhatsNew_CoreData_iOS/

我在禁用日记模式时遇到问题.

我的代码是:

static NSManagedObjectContext *managedObjectContext(){
static NSManagedObjectContext *context = nil;
if (context != nil) {
    return context;
}

NSString * const NSSQLitePragmasOption;

NSSQLitePragmasOption : @{ @"journal_mode" : @"DELETE" };


@autoreleasepool {
    context = [[NSManagedObjectContext alloc] init];

    NSPersistentStoreCoordinator *coordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:managedObjectModel()];
    [context setPersistentStoreCoordinator:coordinator];

    NSString *STORE_TYPE = NSSQLiteStoreType;

    NSString *path = @"ExerciseDB";
    NSURL *url = [NSURL fileURLWithPath:[path stringByAppendingPathExtension:@"sqlite"]];





    NSError *error;
    NSPersistentStore *newStore = [coordinator addPersistentStoreWithType:STORE_TYPE configuration:nil URL:url options:NSSQLitePragmasOption error:&error];

    if (newStore == nil) {
        NSLog(@"Store Configuration Failure %@", ([error …