IOS - buttons slide in from right side animation - ios

Question

i am new to IOS programming. i have a background image on my screen. What i want is when app launches screen shows with the background image and then after 1 sec 2 buttons comes up from right side of the screen. how can i do this. here is the image what i am trying to do
button 1 and button2 have to be invisible first. after 1 second they comes up from right side.
if there are any tutorials related to this kind of animation then please share

Answer 1

You can use simple UIView Animations to achieve this.
Set your button x origin any value greater than screen size so that it is not visible first. Then reset the button frame to a visible value with view animation. For example call the following function in your viewWillAppear: method.
- (void) animateButton {
// Setting button origin to value greater than the view width.
CGRect frame = button.frame;
frame.origin.x = self.view.frame.size.width+10;// or set any value > 320
button.frame = frame;
[UIView animateWithDuration:0.5
delay:2.0
options: UIViewAnimationCurveEaseOut
animations:^{
button.frame = CGRectMake(20, 100, 60, 25) ;// Any value according to your requirement
}
completion:^(BOOL finished){
NSLog(#"Done!");
}];
}
Refer Tutorial

Answer 2

You can do it this way, please note that, if you want to animate the way your button shows up, you must hide them using alpha = 0.0f (and not hidden = true). This way, you will have a smooth showing up animation !
Here it is :
First, on your viewDidLoad of your UIViewController, you have to set up a NSTimer of 1sec, then let it call the method that will let your buttons appear :
- (void) viewDidLoad {
[super viewDidLoad];
// Do your init stuff here
// We will call your buttons as if they are declared as properties of your class, ask if you don't know how to set them
self.button1.alpha = 0.0f;
self.button2.alpha = 0.0f;
// This will wait 1 sec until calling showButtons, where we will do the trick
NSTimeInterval timeInterval = 1.0;
[NSTimer scheduledTimerWithTimeInterval:timeInterval target:self selector:#selector(showButtons) userInfo:nil repeats:NO];
}
- (void) showButtons {
[UIView beginAnimations:#"buttonShowUp" context:nil];
[UIView setAnimationDuration:0.5]; // Set it as you want, it's the length of your animation
self.button1.alpha = 1.0f;
self.button2.alpha = 1.0f;
// If you want to move them from right to left, here is how we gonna do it :
float move = 100.0f; // Set it the way you want it
self.button1.frame = CGRectMake(self.button1.frame.origin.x - move,
self.button1.frame.origin.y,
self.button1.frame.size.width,
self.button1.frame.size.height);
self.button2.frame = CGRectMake(self.button2.frame.origin.x - move,
self.button2.frame.origin.y,
self.button2.frame.size.width,
self.button2.frame.size.height);
// If you want to set them in the exact center of your view, you can replace
// self.button1.frame.origin.x - move
// by the following
// (self.view.center - self.button1.frame.size.width/2)
// This way, your button will be centered horizontally
[UIView commitAnimations];
}
Ask if you have any questions !

Answer 3

Set the buttons' x co-ordinates such that the button is just outside the screen on the right side.
And then try the following in your viewDidLoad()
[UIView animateWithDuration:0.5
delay:1.0
options:NO
animations:^{ change your button x co- ordinate here to the co-ordinate you need it on finally}
completion:NULL];