Question

I am drawing a NSString using drawRect and is it possible for me to animate this NSString once it has been drawn? I want it to fade in/out after 3.0 seconds. How can I do so?

Answer 1

Make a UILabel, then use animation to perform your desires

- (void)faceInLabel{
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 50)];
    label.text = @"My String";
    [myView addSubview:label];
    label.alpha = 0;
    [UIView animateWithDuration:0.5 animations:^{
        label.alpha = 1;
    }
    completion:^(BOOL finished)
     {
         [NSTimer timerWithTimeInterval:3 target:self selector:@selector(fadeOutLabel) userInfo:nil   repeats:NO];
      }];
}
- (void)fadeOutLabel
{
    [UIView animateWithDuration:0.5 animations:^{
        label.alpha = 0;
    }];
}