How to go back to the original view using pop view controller

I have a button & when i click on button it moves to another view controller then there is a back button when i click on that it takes time to go开发者_运维问答 back

I am doing it like this

GeoNewsViewController*targetController=[[GeoNewsViewController alloc] init];
[self.navigationController pushViewController:targetController animated:YES];

---

-(void) viewWillDisappear:(BOOL)animated{

    //remove unnecessary code here if u have

    //if u use any webservice then cancel connection here

    //stop any animations if

}

You can programatically go back with animation like this

        [self.navigationController popViewControllerAnimated:YES];