how can I add an animation to a UITextField
to indicate wrong password exactly like the one in facebook app (at login screen) or the Mac OS X login box ?
thank you in advance.
Something like that
-(void)shake:(UIView *)theOneYouWannaShake
{
[UIView animateWithDuration:0.03 animations:^
{
theOneYouWannaShake.transform = CGAffineTransformMakeTranslation(5*direction, 0);
}
completion:^(BOOL finished)
{
if(shakes >= 10)
{
theOneYouWannaShake.transform = CGAffineTransformIdentity;
return;
}
shakes++;
direction = direction * -1;
[self shake:theOneYouWannaShake];
}];
}
So you need three more things: An int direction which is set to 1 before the shake is called an int shakes, which is set to 0 before the shake is called and a constant MAX_SHAKES which is as large as you like. Hope that helps.
EDIT:
call it like this:
direction = 1;
shakes = 0;
[self shake:aUIView];
inside header file add
int direction;
int shakes;