How do I animate my subviews on adding them?

Question

I have developed a font selection that utilizes UIPickerView and UIToolbar, which are both added on touching a UIButton.

But they just kind of pop in which looks sloppy.

is there a way to animate them?

here is the method that adds them (it's called on clicking the button) :

-(void)showPicker
{
    [self.view addSubview:_fontPicker];
    [self.view addSubview:pickerTB];

}

Answer 1

You can animate them in a couple of ways, but probably the easiest is to just fade them in.

Fade In

[someView setAlpha:0]
[self.view addSubview:someView];
[UIView beginAnimations:@"FadeIn" context:nil];
[UIView setAnimationDuration:0.5];
[UIView setAnimationBeginsFromCurrentState:YES];
[someView setAlpha:1];
[UIView commitAnimations]; 

Fade Out

float fadeDuration = 0.5;
[UIView beginAnimations:@"FadeOut" context:nil];
[UIView setAnimationDuration:fadeDuration ];
[UIView setAnimationBeginsFromCurrentState:YES];
[someView setAlpha:0];
[UIView setAnimationDidStopSelector:@selector(removeView)];
[UIView commitAnimations];


-(void) removeView {
    [someView removeFromSuperview];
}

Something as simple as that.