iOS 7 multi spaces issue - iphone

Question

I need to animate label text with #"text . ", #"text . ", #"text . ", #"text ."
So user will see only dot animation. I use a center alignment for the label text.
I use timer for that purposes:
- (void)processTimerFired:(NSTimer *)timer {
NSMutableDictionary *dict = [timer userInfo];
NSMutableString *string = [[dict objectForKey:#"label"] mutableCopy];
int dotNumber = [[dict objectForKey:#"dot"] intValue];
if (dotNumber == 3) {
dotNumber = 1;
}
else {
dotNumber += 1;
}
[dict setObject:#(dotNumber) forKey:#"dot"];
for (int i = 1; i < 4; i++) {
if (i == dotNumber) {
[string appendString:#"."];
}
else {
[string appendString:#" "];
}
}
self.informationLabel.text = string;
}
on iOS 6 everything is OK, but on iOS 7 it seems that xcode reduces the number of spaces, so the origin of the text always becomes different. And that's why it seems that text is shaken.
I tried to add "+" at the end for test. And everything became OK. So It seems that xcode removes 'excess' spaces only when there is not other symbol after that.

Answer 1

What if you replace the space #" " with a Unicode non-breakable space #" " (obtained by Alt-space on a Mac) ?

Answer 2

I'm doing test with that issue and I'm seen that you need to center the text to right. That's my code:
self.text = #[#"Text. ",#"Text . ", #"Text ."];
[self.shorLabel setTextAlignment:NSTextAlignmentCenter];
[self doAnimation:#0];
And doAnimation method:
- (void) doAnimation: (NSNumber *)index
{
int indexInt = ([index intValue] +1)%3;
[self.shorLabel setText:self.text[indexInt]];
[self.shorLabel sizeToFit];
[self.shorLabel setFrame:CGRectMake((self.view.frame.size.width - self.shorLabel.frame.size.width)/2, self.shorLabel.frame.origin.y, self.shorLabel.frame.size.width, self.shorLabel.frame.size.height)];
[self performSelector:#selector(doAnimation:) withObject:#(indexInt) afterDelay:0.2];
}