使用键盘下的UITextFields向上移动UIView

Posted 2021-02-24

Add this code to the controller
Set controller as the delegate of the all the UITextField s in the UIView

- (void) animateTextField: (UITextField*) textField up: (BOOL) up{
	int txtPosition = (textField.frame.origin.y - 140);
    const int movementDistance = (txtPosition < 0 ? 0 : txtPosition); // tweak as needed
    const float movementDuration = 0.3f; // tweak as needed
 
    int movement = (up ? -movementDistance : movementDistance);
 
    [UIView beginAnimations: @"anim" context: nil];
    [UIView setAnimationBeginsFromCurrentState: YES];
    [UIView setAnimationDuration: movementDuration];
    self.view.frame = CGRectOffset(self.view.frame, 0, movement);
    [UIView commitAnimations];
}
 
- (void)textFieldDidBeginEditing:(UITextField *)textField{
    [self animateTextField: textField up: YES];
}
 
- (void)textFieldDidEndEditing:(UITextField *)textField{
    [self animateTextField: textField up: NO];
}
 
- (BOOL)textFieldShouldReturn:(UITextField *)theTextField {	
	[theTextField resignFirstResponder];
	return YES;
}