Move UIButton 10px down and open new ViewController - iphone

Question

I'm newbie at iOS development and this is my first question on SO.
I want to create "animation".
When I tap UIButton I want to slowely (about 0.5 seconds) move it down for 10px and when I raise my finger I want to open new viewController.
I made something but I don't know how to make "animation".
UIImage *normalImage = [UIImage imageNamed:#"FirstImage"];
UIButton *firstButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
firstButton.frame = CGRectMake(31, 194, normalImage.size.width, normalImage.size.height);
[firstButton setImage:normalImage forState:UIControlStateNormal];
[firstButton addTarget:self action:#selector(showSecondViewController) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:firstButton];
- (void)showSecondViewController; {
SecondViewController *secondViewController = [[SecondViewController alloc] init];
secondViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentModalViewController:secondViewController animated:YES];
[progressViewController release];
}

Answer 1

[UIView animateWithDuration:(NSTimeInterval)duration animations:^(void) {
//put your animation result here
//then it will do animation for you
} completion:^(BOOL finished){
//do what you need to do after animation complete
}];
for example:
UIButton *firstButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
//add firstButton to some view~
//....
firstButton.transform = CGAffineTransformIdentity;
[UIView animateWithDuration:0.5 animations:^(void) {
firstButton.transform = CGAffineTransformMakeTranslation(0,10);
} completion:^(BOOL finished){
show your view controller~
}];

Answer 2

[UIView animateWithDuration:0.5 animations: ^ {
button.frame = CGRectMake:(button.frame.origin.x, button.frame.origin.y + 10.0f, button.frame.size.width, button.frame.size.height);
}];

Answer 3

You can put transformations(repositioning), scaling and rotatations between beginAnimations and commitAnimations blocks where you can specify the AnimationRepeatCount,AnimationCurve etc.
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDelay:0.5];
[UIView setAnimationDuration:1];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
[UIView setAnimationRepeatAutoreverses:YES];
[UIView setAnimationRepeatCount:2];
..........................//etc.
firstButton.frame = CGRectMake(31, 194, normalImage.size.width, normalImage.size.height);
[UIView commitAnimations];
But in iOS4 and later animations are encouraged to be performed by
animateWithDuration:delay:options:animations:compeletion and similar methods that invlove blocks which are very powerful. For more information on block animations please refer to apple documentation