iPhone SDK develop image falling down animation/ possible to repeat?

[sandromandro]

hey, i have a question, in my project i have a falling image but it falls only one time. is it possible to repeat the falling image?

my code:

- (void)viewDidLoad
{
ObjektTimer = [NSTimer scheduledTimerWithTimeInterval:0.035 target:self selector:@selector(movepicture) userInfo:nil repeats:YES];
[super viewDidLoad];
}

-(void)movepicture{

Menueball3.center = CGPointMake(Menueball3.center.x, Menueball3.center.y +1);
}

please help me

[mouser58907]

Your move picture function only moves it down. You need to check and once it is off the bottom, reset Menueball3.center.y to where it began.

[Duncan C]

Originally Posted by sandromandro

hey, i have a question, in my project i have a falling image but it falls only one time. is it possible to repeat the falling image?

my code:


please help me

You should really use Core Animation to do this instead of a timer. With Core Animation, you just tell it the position you want to animate to, and it does it for you, more efficiently, and more smoothly, than you could yourself.

Take a look at the UIView class method animateWithDuration:animations:completion: or animateWithDuration:delayptions:animations:compl etion:

If you search on that method name here you should find a number of examples of how to use it. I know if you search on "animateWithDuration" and my name, you'll find quite a few examples I've posted.

The longer form, with an options parameter, takes a list of options, one of which is an auto-repeat setting, (UIViewAnimationOptionRepeat)

[GHuebner]

The stanford class has a good introduction to animation in lecture 15. Its still pretty basic but gives a good starting foundation.

iPad and iPhone App Development (Fall 2011) - Download Free Content from Stanford on iTunes

Originally Posted by Duncan C

You should really use Core Animation to do this instead of a timer. With Core Animation, you just tell it the position you want to animate to, and it does it for you, more efficiently, and more smoothly, than you could yourself.

Take a look at the UIView class method animateWithDuration:animations:completion: or animateWithDuration:delayptions:animations:compl etion:

If you search on that method name here you should find a number of examples of how to use it. I know if you search on "animateWithDuration" and my name, you'll find quite a few examples I've posted.

The longer form, with an options parameter, takes a list of options, one of which is an auto-repeat setting, (UIViewAnimationOptionRepeat)