Question

i receive this exception after calling the following method. And it only comes when app load for the first time. When i again open the app it works fine. Can anyone help?

-(void) createAndCheckDatabase
{
  BOOL success; 

  self.databaseName = @"database.db";
  NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
  NSString *documentDir = [documentPaths objectAtIndex:0];
  self.databasePath = [[documentDir stringByAppendingPathComponent:self.databaseName]retain];

  NSFileManager *fileManager = [NSFileManager defaultManager];

  success = [fileManager fileExistsAtPath:self.databasePath];

  if(success) return; 

  NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:self.databaseName];

  NSError *err;
  [fileManager copyItemAtPath:databasePathFromApp toPath:self.databasePath error:nil];
  if (err) {
//      DebugLog(@"%@", [err description]);
  }

}

Answer 1

if (err) … will crash because err is not initialized! and you dont use it in fileManager copyItemAtPath: