I'm new in Iphone. I have an UITextView inside a UIImageView . Now I need to dynamically resize the UIImageView so that its textview also change its size dynamically. Moreover I can move this UIImageView with UITextView around the screen. If any one knows this using UIGuesture please help me.
Any help would be appreciated
If you are looking at resizing the UIImageView object, look at the UIPinchGestureRecognizer. It will have a property called scale that you can use to change its size.
As for the UITextView object that is the subview, you can look at autoresizingMask property inherited from UIView. Set it appropriately so that the text view scales in response to its super view.
For moving the image view, you can use the UIPanGestureRecognizer. You can get the translation using translationInView:. Use this to modify the center of the image view object. This should move the image view as you drag your finger around.
I hope you've gone through the guide. Let us know if you face problems implementing this and put some code so that we can guide you in the right direction.
Related
I would like to add zooming capabilities to the currentItemView . I've tried to create a scrollview and add it as a subview of the view from the datasource method. But had no luck doing it.
If anybody has an example and is willing to share it please do so. Or at least some proper steps in order to succeed. Thanks.
Add an GestureRecognizer to the View.
First of All Add an UIImageView to the View which is of same size as the Icarousel images.
Then Add that UIImageView into the ScrollView now you can ZOOM the UIImageView you have created.
AfterWards add the respective code in Icarousel DidBegin Scroll method to hide the UIImageView.
Since I'm not having that much time, but i have an example for you in GitHub for showing an example of Presenting an Animation with Icarousel, you can find it Here :)
I am currently working on an application for a client, and they have made an odd request. The request involves putting a custom image as the indicator for the scrollview. I am not even sure if this is possible but if it is can you please let me know how one would go about doing that.
Thanks
UIScrollView streches a small, semi-transparent circle image to generate its scrollbars. You can find this image as the first subview of a UIScrollView:
UIImageView *circle = [scrollView.subviews objectAtIndex:0];
However, as I said this image is stretched, and as far as I can tell, only the alpha values are considered when drawing the scroll bars.
So for example if you're only interested in changing the top/bottom ends of the scroll bar, you can try to change this image. However, I doubt you'll be able to do anything interesting.
A possible solution that comes to mind, and this is only a theory, is to add a custom, transparent UIView on top of a UIScrollView. Then you can hide the default scroll bar (by using showsHorizontalScrollIndicator and showsVerticalScrollIndicator), pass the necessary touch events to the UIScrollView to scroll the content, and draw the scrollbars in your custom view.
so I have a UIImageView in a UIView but when I run it in the iPhone Simulator, the image goes beyond the boundaries of the UIView. What's wrong...?
Have a look at the clipsToBounds property of UIView. If you set this to YES on your view the UIImageView shouldn't extend outside of that view any more.
You may also benefit from using the Content Mode property in which you can specify how the content is drawn to fit the view. You can set it to fill, fit-to-scale, etc.
I've created a NIB file with some button controls on it, and as a background it has an ImageView which contains a PNG file loaded from my project.
What I want to do is to draw on top of the ImageView - imagine that my UI is a clockface and I want to draw the hands of the clock on top of the background image.
Is it the correct approach to try to subclass the UIImageView and use its DrawRect as when I use the DrawRect of the default view I don't see anything on the screen?
I'm a little lost as I'm finding this particular bit of the documentation hard to follow.
Thanks.
Create a new custom UIView (e.g. named HandsView) that sits on top of your background view (by adding it as a subview of the UIImageView). In the custom view, you can use the drawRect method. Make sure, you clear the context to transparent, so that the background image can be seen below the HandsView.
If you just want to draw turning hands, you can also try to use two fixed UIImageViews with the images of the hands and use the transform property to apply a rotation.
set a UIImageView.image property to a UIImage is unable add the image to the view,however if i set the imageview frame property,it works.can anyone tell me how it's happen?
and what will happen when i apply the UIImage instance method[drawInRect:] redraw the image frame which is larger than the view frame?i have tried but nothing happen,and what is this function doing actual?
Generally, how it works is, you add an Image to a UIImageView and then add the UIImageView to a UIView to display it on the screen. You can do this programmatically, or using Interface Builder. Optionally, you can create a CGRect (based on a frame, if you like), use this as the bounds for the UIImageView (or you can frame the UIView). There are several ways to do what you want to do.
It's hard to tell without seeing your code. It could be a number of things. You could be inserting the view with the image behind the currentView? You may not be retaining the UIImageView. We can't read minds here necessarily, (sometimes we do). But you'll need to be more helpful if you want a solid answer.
Or just take a look at this:
UIImageView Docs