Copy folder from iPhone Resources directory to document directory

Question

BOOL success;
NSFileManager *fileManager = [[NSFileManager defaultManager]autorelease];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory,
                                                      NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *documentDBFolderPath = [documentsDirectory stringByAppendingPathComponent:@"DB"];
success = [fileManager fileExistsAtPath:documentDBFolderPath];

if (success){
 return;
}else{
 NSString *resourceDBFolderPath = [[[NSBundle mainBundle] resourcePath]
                                         stringByAppendingPathComponent:@"DB"];
 [fileManager createDirectoryAtPath: documentDBFolderPath attributes:nil];
    [fileManager copyItemAtPath:resourceDBFolderPath toPath:documentDBFolderPath           
                                                                         error:&error];
 }
}

Like this.

Resources/DB/words.csv => DB folder copy => Document/DB/words.csv

I want to copy DB subdirectory at Resources folder. I thought that source is good. But that source makes folder and doesn't copy files in DB folder at Resources folder.

I really want to copy files in DB folder at Resources folder. please help me.

Answer 1

1) Do not -autorelease the NSFileManager. You are double-releasing it which will crash your app.

2) No need to call -createDirectoryAtPath:. From the SDK doc of -copyItemAtPath:toPath:error:,

The file specified in srcPath must exist, while dstPath must not exist prior to the operation

and creating the directory the copy to fail.