I need to show the next image with bottom up animation in uiviewcontroller.
How can i do it?
Thanks in advance.
Set the next images' frame to below the current one (just off screen), then in an animation block, change its frame to take the place of the other image view, at which point you can remove the old image view from its superview.
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I want to make an application like photos of iPad in which it displays photos in grid manner and after clicking over custom-view it animated from its current position.
I just want to know how to animate view from its current position like if i click over the custom-view which is first line then it will show that custom-view animating from top position and if i click over the custom-view which is in bottom line then it will show and animate custom-view from bottom position and same for middle line also. Any help and suggestion will be appreciated.
If you don't specify the from value then the current value is the default. If you still want to specify the default value then the current frame of the image would probably do.
Depending on what happens next in your application and if the images resize or not you may need to animate a transform as well. Otherwise just animating the frame from its current value to [[UIScreen mainScreen] applicationFrame]; will be a good starting point.
Also, depending on where your image is in the view hierarchy you may need to move it to appear on top of tab bars and navigation bars if you truly want the image to appear full-screen when tapped.
Is it possible do something like this ?
When I click on the button I need the following animation: button to set some alpha filter and starts to fall down as indicated by the arrow, it will disappear on tab.
Can you tell me how to do this ? Thanks a lot ...
Here is image url: http://img534.imageshack.us/img534/8149/screenqx.jpg
It's definitely possible, but there are some issues you have to overcome. One is that UIBarButtonItem isn't a UIView. One way is to loop through the subviews of the UIToolbar or UINavigationBar. Another way is to figure out the position of the button. Another is to get the view using private api if you're not submitting to the AppStore.
Once you have the view, you can move it to the superview of the UIToolbar or UINavigationBar or you can create a view on top of that (and hide the real UIBarButtonItem since you're done with that). The latter is more difficult because mimicking the look of the default bordered UIBarButtonItem isn't easy.
Now you need to get the center of the UITabBarItem somehow. You can either use private api or you can loop through the subviews.
Create a CGPath using Quartz functions or using UIBezierPath. The start point will be the center of the button and the end point will be the center of the UITabBarItem.
Create a CAKeyFrameAnimation and attach said CGPath.
Create a CABasicAnimation to animate the opacity.
Add both to a CAAnimationGroup.
Attach the animation group to your button view's CALayer.
Make sure to also set the position and the alpha in order to prevent the view from jumping back to its original position after the animation.
Once you attach the animation group, the animation should start, so make sure you're doing all of this in the button's selector method.
You can't really move it from view to view, as your views could clip and then you'd get frames with only a partial image. Probably the best thing to do is to create a view on the fly which covers the whole screen, copy the button image into the view at the original point, remove the button from the original view, then animate that image to where you want it to go, then add the button to the final destination.
First,I am sorry for my poor english...
So, i have a problem with a view which is added on a other one.
I am setting size of UIview in IB as 200px/200px
I set the center of this view with the center of parent view.
Everything is working great at this point.
I can see my View in the center of the parent view like i want.
Then I set the - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
And that's working to.
But when i rotate the iphone, the size of the view change to full size, the view don't want to stay in center and go on the top left of the screen and resize as fullscreen...
Can somebody help me with this problem ?
Do I have to set the frame and the center after rotate ? That can't be automatic ?
Thank you!
In IB, under the "Autosizing" section, remove the "arrow" that indicates auto width/height of your component.
When you tap the bookmark, it slides down or up smoothly. As it slides up, it disappears as if behind the view directly above it. I know how to animate changing the frame of a view, but I don't know how to make it disappear like that. (I don't want to resize the UIImage, just slide the UIImageView up and out of sight.)
I figure I need an invisible button to toggle the animation, and an UIImageView to animate. Do I need to change the bounds of the UIImageView, or should I use the frame? I thought I could just change the height from X to 0, but it didn't seem to resize the UIImageView. I had a little luck with settings the bounds with clipping subview's enabled, but I wasn't quite there.
I don't think I understand the relationship between the bounds and the frame.
I ended up adding a parent UIView to contain the UIImageView. It has the dimensions in which I want the UIImageView to be viewable in, and then I just animate the frame so the Y dimension is equal to the negative height and it slides up nicely.
I was on the wrong track with the bounds.
I have a UIView(first view) on top of which I would like to display another UIView(second view). I display the second view using animation which causes the second view to be displayed for about 3/4 of the iPhone screen. The first view is visible underneath the animated second view. I would like to make changes to the first view as the second view is displayed. Any ideas on how I can achieve this. Right now, the animation completes, the second view is displayed and then I can change the first view. I would like to change the layout of the first screen as the second screen is being displayed. Any help is much appreciated.
Basically, just do it.
You can start more than one animation at a time. If you are not animating the changes to the first view, then do them after calling commitAnimations or otherwise starting the animations on the second view. If you want to do them half way through the animation, set up a timer or delayed call.