I am using the code:
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDelegate:self];
[UIView setAnimationDuration:0.3];
[info setFrame:CGRectMake( 0, 96, 320, 384)];
[UIView commitAnimations];
to have an animation of the object "info" to change its heght to 384... Nothing else is changed, but the only way to do that is to change the whole frame, and in the animation, instead of the height growing, the object just snaps to the top of the screen with the proper width and height, and just moves downward into place, instead of staying in place and just simply growing. How can I fix it so it does just grow downward?
EDIT: The info is a UITextView, and the downward sweep only happens when you are not scrolled to the top.
Try this:
//... animation setup
CGRect frame = info.frame;
frame.size.height = 384;
info.frame = frame;
[UIView commitAnimations];
Instead of [info setFrame:CGRectMake( 0, 96, 320, 384)]; try info.frame.size.height = 384
Related
I'm using animation with blocks and I'm trying to animate a change to my main window's frame.
Here is my code:
[UIView animateWithDuration:0.3f animations:^{
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
self.view.window.frame = CGRectMake(0.0f, -20.0f, self.view.window.frame.size.width, self.view.window.frame.size.height+20);
}];
However it doesn't animate like self.view.frame changing or something else. It's just plain crap without animation.
Any ideas?
This is Wrong, Window is Fixed in FRAME And Bounds,
you cannot move Window, its top Root Container and has constant size, you should translate and transform your view only like this.
[UIView animateWithDuration:0.3f animations:^{
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
self.view.frame = CGRectMake(0.0f, -20.0f, self.view.frame.size.width, self.view.frame.size.height+20);
}];
Modal view in iOS appears from bottom of the screen to top, and dismisses from top to bottom of the screen. I would like to know, is there any way i can revert the above and make the model view appear from top of the screen to bottom of it. Thus when it is dismissed it will animate from bottom to top.
Yes why not I think I can offer you a workaround :) ....
First Make a custom UIView and set its coordinates as
View.frame=CGRectMake(0, 0, 320, 0);
Then use Animations to move it from top to bottom and vice-versa like this:-
For making it appear use the following code:-
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationDuration:0.25];
View.frame = CGRectMake(0, 0, 320, 460);
[UIView commitAnimations];
For dismissing it use :-
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationDuration:0.25];
View.frame = CGRectMake(0, 0, 320, 0);
[UIView commitAnimations];
In order to make an image appear from left to right, I am setting the anchorPoint like so:
myImageView.layer.anchorPoint = CGPointMake(0.0f, 1.0f);
then animating it:
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:1.0];
[UIView setAnimationCurve:UIViewAnimationCurveLinear];
myImageView.transform = CGAffineTransformMakeScale(1.0, 1.0);
[UIView commitAnimations];
The animation works great, but by changing the image's anchorPoint, the image does not appear in the location where it was set in Interface Builder, it gets moved around quite a bit when that anchorPoint is set.
Does anybody know if there is a way to set the anchorPoint or accomplish this effect without changing the image's location in Interface Builder?
Thanks!
In ViewDidLoad: Just Initialise Your ImageView Frame:
[ImageView setFrame:CGRectMake(900, 0, 69, 39)];
and write this below code:
[UIView animateWithDuration:0.5
delay:0.1
options:UIViewAnimationOptionTransitionCurlDown
animations:^{
//animation code
ImageView.frame = CGRectMake(0, 0, 320, 345);
} completion:^(BOOL finished) {
//completion code
}];
I have made many tries to have the same effect of switch than the one you can see when calling a phone number : the front view disapear with a zoom effect, while the other one appears also with a zoom effect.
I can't achieve doing that effect, it's always a so-so. There seems to have a scale effect, with an action on opacity, but...
Do you know how this can be done to reflect that effect (not a so-so, I have tons of those) ?
// Make this interesting.
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:2.0];
[UIView setAnimationTransition:UIViewAnimationTransitionNone forView:self.view cache:YES];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(startupAnimationDone:finished:context:)];
self.view.alpha = 0.0;
self.view.frame = CGRectMake(self.view.center.x,self.view.center.y , 0, 0);
[UIView commitAnimations];
}
I hope this is a framework for a better animation. It's not guaranteed to work, but it's the best I could think of for the first part of the transition.
This will change the frame of your view controller's view so that it "sucks" itself into the center of the screen, which is a natural black color. Now that I think about it, a CGAffineTransform would have been much easier...
EDIT (For pedantry's sake): Starting with iOS 4, you can now use the newer, and much more syntactically clean, animation blocks and a nice transform:
[UIView animateWithDuration:0.25 delay:0.0 options:0 animations:^{
//animate the toolbars in from the top and bottom
[myTopView setFrame:CGRectMake(0, self.view.frame.size.height - 44, self.view.frame.size.width, 44)];
[myBottomView setFrame:CGRectMake(0, 0, self.view.frame.size.width, 44)];
//fade to black...
self.view.alpha = 0.0;
//and suck inwards.
self.view.frame = CGRectMake(self.view.center.x,self.view.center.y , 0, 0);
}
completion:^{
//do something to end nicely, or start another animation block.
}];
I would like to ask is it possible to translate the UIButton position?
How? Anyone?
You can get the frame of the button using "frame" property. This returns a CGRect object which basically has your buttons x-coord, y-coord, width and height.
Based on where you want to translate your button, calculate the new x-coord and y-coord.
Then do the following:
btnMyButton.frame = CGRectMake(oldx,oldy,width,height);
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationTransition:UIViewAnimationTransitionNone forView:btnMyButton];
[UIView setAnimationDuration:0.3];
btnMyButton.frame = CGRectMake(newx, newy, width, height);
[UIView commitAnimations];