iphone database problem

Iam making a tab-based application where in first tab i have a custom button. and in second tab i have a table view which loading database from sqlite.

in that cus开发者_运维知识库tom button selector i have called viewlo. whose body is like this:

info *viewer=[[info alloc]init]; [[self navigationController] pushViewController:viewer animated:YES]; [viewer release];

the problem is that when i click the button the database didn't appear, and shows empty table. but when i go back and again click button it load the data. what is the problem??

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ok just got it...

i just change the view did load method of info and its working now....

i just call these lines in my info viewload:

FootPainAppDelegate *appDelegate = (FootPainAppDelegate *)[[UIApplication sharedApplication]delegate]; [appDelegate getcategories];