UIVIew 올리기 키보드 깔끔한 소스

1. - (void) animateTextField: (UITextField*) textField up: (BOOL) up{
2. int txtPosition = (textField.frame.origin.y - 140);
3. const int movementDistance = (txtPosition < 0 ? 0 : txtPosition); // tweak as needed
4. const float movementDuration = 0.3f; // tweak as needed
5.  
6. int movement = (up ? -movementDistance : movementDistance);
7.  
8. [UIView beginAnimations: @"anim" context: nil];
9. [UIView setAnimationBeginsFromCurrentState: YES];
10. [UIView setAnimationDuration: movementDuration];
11. self.view.frame = CGRectOffset(self.view.frame, 0, movement);
12. [UIView commitAnimations];
13. }
14.  
15. - (void)textFieldDidBeginEditing:(UITextField *)textField{
16. [self animateTextField: textField up: YES];
17. }
18.  
19. - (void)textFieldDidEndEditing:(UITextField *)textField{
20. [self animateTextField: textField up: NO];
21. }
22.  
23. - (BOOL)textFieldShouldReturn:(UITextField *)theTextField {
24. [theTextField resignFirstResponder];
25. return YES;
26. }