I have created background images for all iOS devices. As far as I understand, iOS will pick the appropriate image at runtime according to screen resolutions.
Is there a way to set the image as a screen background for the root view? The method should take automatic image picking into account.
Is there a way to set the image as a screen background for the root view
In the storyboard, locate the scene representing the root view controller and its view. Drag a UIImageView into the main view and pin its top, left, bottom, and right to the edges of its superview with a constant of zero. Send it to the back so that it's behind all other subviews of the main view. Set its image to the desired image, and supply an appropriate content mode. Done.
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I've created 4 subviews of white color & a yellow one as you can see in reference image I've shared below.
And I've programmatically changed the position of Tabbar from bottom to top just below to navigation bar as you can see in below image (When it is running in the simulator).
Now since I've constraints for that yellow view in image as follow
It is appearing just below to navigation bar but I want it to be displayed just below the Tabbar.
Since Tabbar is getting its position programmatically & other views (including yellow view) are getting their positions from the storyboard.
And since storyboard UIelements are get settled before any other UIelement which are coming from the program or at least get their position from programmatically.
What could be the best way to achieve what I want.
Please refer my storyboard as well to get more understanding. (Refer Below image)
I also want to fit all 5 subviews in the space between tabbar & bottom of the screen. I want to calculate 1/5th of that space & assign this height to each subview. I'd later reduce few pixels to separate them.
Why not add the height of the tab bar to the yellow view's top position? That way, you'd set the constraint something like:
Fajar.top = top + 44
If the tab bar is always visible, then that should work. But of course, if the tab bar only appears at times, you'd probably have to change that constraint programmatically depending on the change ...
I have a UIScrollView that shows certain images based on an index. When an image loads, I want to set the background of the UIScrollView to the blurred version of that image.
Right now I have a container view that houses the scrollView, and I've been trying to add a blurred subView to the container but it's not working out. If I just add the subview it gets rendered over the scrollView which id obviously no good, and If I add the subView and send it to back then I don't see any blurred effect at all.
Is this the right approach or is there a better way to achieve the effect I'm going for?
As you said "and If I add the subview and send it to back then I don't see any blurred effect at all."
To sort it out, You may try changing the background color of Scrollview to clearColor.
I have an image that is 1000x134 referred to as logo
I have an UIImageView that contains that logo as AspectFit
I have another view in the back
The user is allowed to pan, pinch, and rotate the logo to position it where ever they want on top of the background view
After they have positioned the logo, I then increase the size of the background view
Problem: After the background view's size gets increased, the position of the logo gets messed up.
Question: How do I scale the logo with the background view in order for it to appear in the same position?
You should make the UIImageView a subview of your background view. That would make it easy to resize the whole view, perhaps using self.view.transform.
I have a View and i have a an image view inside it and a another UiView and one or two more view in side the top level view. The problem is when i run my app in different screens iphone the image view resizes and i want the other view to change the their position to a little bit down. But only image view gets more space, but i don't want the other view to get more space but i want them to change their position.
Here i want the white view the Placeholder text and the the small picture view to change their position and go a bit down when the app runs on big screen iphone. Th rounded image view above the Mybutton gets more space when the screen resizes which is okay but the white view and other view remain at their same place. Just to add more information all these view are siblings of each other and i have fixed the the width and height of the white view, picture view and the placeholder text label
Any guidance please?
I think you have to start with the "movable" element and then add every "fixed" element.
I think you have to work with Center Y Alignment Contraint even if you have to create new view for it. The beginning could be :
I have a layout working fine in Xcode storyboard for a Master-Detail splitview app but when I run it in the Simulator or on an actual device it appears slightly messed up and I have no idea why.
The image in Xcode looks like this;
The layout in Simulator and Device looks like this
This is almost certainly a problem with the autoresizing settings of your subviews (aka "Springs and Struts").
You are building a UISplitViewController-based application. Note that the dimensions of your Detail View Controller's frame are different when your app is running in portrait vs landscape mode. In your storyboard screenshot above you see the landscape-sized frame. The screen capture from your simulator shows the portrait-size frame. You'll need to set the struts and springs of your subviews (the UIPickerView, the brushed metal buttons, the white box below, etc) so that these elements resize (or not) and maintain their relative (or absolute) position in the parent view.
The easiest way to do this is to set the values in your storyboard, using the Size Inspector in the right column. Select which element you want to change settings for and then look for this:
By clicking on the red arrows inside the inner box you will toggle on/off the "springs", which determine whether your subview expands when the parent view expands, or whether it maintains its original size when that happens. By clicking on the outer red I-bars you will toggle on/off the "struts", which determine whether you subview will maintain a fixed distance from its parent view's edge when the parent view's size changes. Setting the right combination of these will make your view to look correct in both portrait and landscape orientations.
You can also change these settings programmatically in your code by setting the view's autoresizingMask property. See for reference:
http://developer.apple.com/library/ios/DOCUMENTATION/WindowsViews/Conceptual/ViewPG_iPhoneOS/CreatingViews/CreatingViews.html#//apple_ref/doc/uid/TP40009503-CH5-SW5