I am writing an iPhone app but have run into a problem with an animation effect I am trying to implementing.
I am trying to add a half page curl effect from TOP.
I am using CAAnimation of "pageCurl", with the subtype set to kCATransitionFromTop or Right. And I also tried to use UIModalTransitionStylePartialCurl of the UIViewController.
But it curls the page from the botton.
My main problem is how to change the transition direction, to get it to curl from the top.
Can anyone help me? I feel that stackoverflow can fix my problem.
Waiting for your replying....
Regards.
Huh. Just an idea, but what if you tried rotating the view 180 degrees so that its upside-down using a CGAffineTransform (view.transform = CGAffineTransformMakeRotation(M_PI)) or something? Maybe if the view is upside-down, the animation will also be that way. Its kind of convoluted, and you might need to do a bunch of rotations and reorganizations with subviews to make them positioned correctly and right-side-up oriented, but might work.
Related
i'm new to game developing so i might be a little confusing on defining what i need.
Assume i have a wide background picture, much bigger than the screen(e.g.4000*3000px), how should i approach if i want to navigate it with the input from the gyroscopes?
i mean handling the device up, down, left, right and so on.
If you remember the old Mosquitoes game on Symbian i would like to do something similar but without the camera.
However any suggestion is appreciated.
Thanks in advance.
Use UIScrollView - put your pic inside the scroll view and try to navigate with fingers.
When scroll will be working nice, use this or this or any other tutorial to find out how to use accelerometer.
Finally, when you will be able to collect data from accelerometer, give it to UIScrollView using [myScrollView scrollRectToVisible:myRect animated:YES];
All needed math and physics must be done by you.
I've implemented autoresizing mask in all my the views of my project very successfully. However in the last one, which is the settings and there are a lot of sliders inside tableCells, it seems it doesn't work too well.:
I'm sure I've implemented the thing right
slide.autoresizingMask=UIViewAutoresingFlexibleWidth
for the sliders and flexible left margin for the labels.
I've also implemented table reload when the rotation takes place.
The cells are being reused ok, or at least in portrait mode they work, but when I rotate and go back I got what you see in the picture.
Any ideas on what am I missing?
Thansk in advance!
I hardly know how to explain my case other than to point to the excellent Absolute vodka app, Drink Spiration.
I am trying to make a carousel like image browsing with a little spice. I would really like to find a simple core animation explanation on how to accomplish something like the above app.
I hope someone can help with this. The solution doesn't have to be exactly the same, but just explain what is happening and it would be best if it was simple and no opengl. Just something to point me in the right direction. I don't think using just a scrollview with uiimageviews is enough.
I wrote something similar and its quite easy once you figure it out in your mind. All done justing using regular old views and animating transforms on them.
Say its 3 images on screen, and you can rotate new ones on and off ... then you will need 5 views set up (most simply just a UIImageView with a relevant image set). They are the currently selected image, the two either side of it and the ones that are, or will be animating on or off when the user flicks left or right.
Each of these 5 images has a position, an angle and an image. When the user flicks left or right each gets animated to the next position and angle, views that are about to come onscreen have their image updated to the next image in the set. If the user keeps on flicking in the same direction you simply reposition views on one side as they come off the other.
With this setup you can do lots of cool carousel like things very simply.
for rotation of my app I use the same view and just rearrange some controls resp. define the appropriate autosize attributes. So, for example, I have a segmented control which goes from the left to the right over the complete screen. When rotating it resizes correct, but I get no events from the segments on the right side (I guess, segements which are located right of the original portrait width).
Does anyone know, why this happens? Thanks for your help.
Regards
Matthias
Found an answer by myself, even though I do not really understand it. Problem was, that I used for the view these "Simulated User Interface Elements". When using those the resize was not done properly. Without them it works perfect.
i am quit new at iphone development and trying to make a photo collage software while learning it. Right now i have a lil problem and hope you can help me out.
I have an UiviewController with a view in it, in this view i have 7 scrollviews with uiimagevies in them for zooming and scollign images within these scrollviews.
All that works well but now i want to make these 7 scrollviews dragable and maybe if possible zoomable (so that the image within the given scroolview zoom together with the scrollview).
It should be possible to drag them all around the screen and if possible even overlap them
and by the way rotating would be great ;-) hope that is not to much asked for.
Would be great if someone can help me out with this..
Well you've got to decide on some other choice here because the functionality you are asking for overlaps, and you can't ask the app to magically know which the user wants to do. What I mean by this is that when you touch and drag within a scroll view, it's going to try to scroll itself, rather than drag the entire scroll view around.
As for rotation and zooming - that gets more complicated, because you start dealing with vector math and the like. You can check out my question on rotation here. The link I gave you has the code to get both rotation and zooming to work.