Question

I will try describe my problem as best as I can. I have created a sqlite database using the console on the mac. I’ve added the file to my project, by right clicking and hitting “add files to (projectname)” and it adds the database. I am able to read the database, however when I try and update the database, although my debugging has confirmed the statements (update statements) succeed, the data in the database is not updating. I am gathering this is because the pointer to the database file is pointing to the .sql file in my documents (which is where the original file that I added is located), however I thought by adding the file to the project, a copy of that file would go within the project folder.

My question is how can I add a .sql file to my project where it is not referenced from the desktop, and be able to update the information that is located within the database.

Answer 1

No the file is not the one on your desktop, the file be bundled in the .app bundle.

The database is located in the app bundle which is readonly, you will need to move the database to the document directory on first startup.

place something like this in the - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

NSString *documentDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES) objectAtIndex:0]; 
NSString *sqlFile =[documentDirectory stringByAppendingPathComponent:@"yourdb.sql"];

if (![[NSFileManager defaultManager] fileExistsAtPath:sqlFile]) {
   NSString *bundleSql = [[NSBundle mainBundle] pathForResource:@"yourdb" ofType:@"sql"];

   NSError *error = nil;
   [[NSFileManager defaultManager] copyItemAtPath:bundleSql toPath:sqlFile error:&error];

   if (error) {
      NSLog(@"Could not copy json file: %@", error);
   }
}