I'm just trying to display a ViewController as a Popover, this is a small part of a big iPad application, and I've being trying to display the content with no success.
The worst thing is that if I create the same scenario in an empty/new project, it's works! The two View Controllers showed in the Image1 are completely new, I created those after tried to add a simple Popover action in one of my views I'm using in the App...which was not working. I tried with Clean and Build the Project more than once...just in case, but the same result. It's just not working in this specific project.
The two view controllers don't have Classes associated yet, I'm just trying to open the View2 when I click on the Button.
I appreciate your comments if I'm missing something really basic in this scenario.
(Adding more details)
I tried a different thing with the restrictions as you can see in the last two images, now I can see "something", but it's not respecting the positions.
You are using size classes of regular width & regular height (wRegular hRegular).
Design your popover view controller in Any-Any size and it should be OK.
(You can also uninstall the size classes of any object in that view controller)
There are some problems in your constraints.
The Label should have 3 constraints: left (Leading), right-to-the-text-field (Trailing) and top (Top Space):
The width and height are not needed because they are automatically set from the intrinsic content size of the label text ("Label").
IMPORTANT: When you add the constraints be sure that they are absolute, not margin related (to understand the difference read this blog post iOS8 Layout Margins).
The Text Field should have the following constraints: width and distance-from-top (Top Space):
Note that the second ("Leading Space") is the same of the "Trailing Space" of the label, not an additional one (the constraints are 5 in total).
You have to explicitly set the width of the text field (134 in my example) because otherwise the intrinsic content size will be set (and it is near to 0 because the text field is initially empty). The height is set correctly from the intrinsic size (calculated from font height, also if text is empty).
NOTE:
My answer implies some important Autolayout concepts. I advice you to study the Apple documentation to better understand them.
Hope this helps
Related
I'm having some problems with properly setting up my static cell the way I want it while making it look good for different screen sizes.
Somehow I don't seem to get how constraints are supposed to work.
One of my views contains a UIViewController with a table view. However, if I change my preview device in the storyboard to, say, an iPad, the table view doesn't get resized. Am I supposed to handle stuff like this from code only or is there a way to handle this from the storyboard (like setting width and height to always fill)?
I'm trying to set up a static cell so it looks good on devices with different screen sizes. Things work well enough when I have only two elements (e.g. one label left and one label right - just like in the standard template), but as soon as I add more things, I'm running into a lot of warnings, e.g. that width and height are ambiguous.
To me, it seems like I'm missing some key concept of constraints.
Look at the picture provided. What I want is the following:
Date to be a certain distance away from my left table border
The Stack View of volume + pic in centered in the middle
pic & price & label (there is one more for the measurement) to be represent the right label
I'm unable to actually try this at the moment but here's the path I would go.
Date:
Fixed Top, Bottom, & Leading to Container constraints to 8 (or whatever you'd like).
Volume Stack
Fixed Top & Bottom to Container constraints to 8.
Price Stack
Fixed Top, Bottom, & Trailing to Container constraints to 8.
You'll have some overlap issues with smaller screens at this point. You should get the "Red Circle" to suggest which constraints to add. Click and read each one and it will be specific enough to walk you through which you want resizing, resetting priority, etc.
*I hate dealing with constraints.
Good luck! I'll try tonight to see if I gave an acceptable answer. :)
I am trying to create a simple UI that works on all devices (obviously) and I haven't had much success. The program consists of two labels, a button, an image view and a textfield, I am also using a universal storyboard.
I implemented a top constraint, horizontally centred and fixed the width and height for all labels, buttons and textfields. The only exception I made with the image view was that instead of implementing a top constraint, I used a bottom one instead as I have found that utilising the former would result in it being only partially displayed. I would then switch from the universal storyboard to one with base values. From their I would delete the existing constraints and add new ones after moving the UI elements to their new locations on the different sized screen.
When I run my app on an iPhone 4S, the layout, whilst mostly correct, is still not perfect (i.e. a label is far too close to the image). Does anyone know how I can make my layouts look correct? I have been following this guide, Adaptive Layout Tutorial in iOS 9.
Thanks so much for your help!
[Example of the constraints for the picture1
I am not sure how familiar are you with autolayout, therfore I'd suggest you watch Stanford university lecture regarding autolayout.
In short, according to the lecture and after looking at your picture, you should almost never set constraints with actual numbers. Use "Standart value" and when you can't choose "Standart value" write 0.
I'd recommend watching the above lecture and the rest of the examples in there.
Your label has 2 problematic constraints
1. Top space (30 points) to "how old is your dog"
2. Top space (28 points) to button
That means that your button is 2 points height (really small!!)
Or - because the button has already a fixed height, the label and the text field are too close (and maybe even overlaps the button)
You should delete the top space constrain (to "How old is your dog") and do something else, or give it more points height
Good luck!
I have previously worked in Windows phone and see that every control in windows phone has an Auto property, meaning occupy the size of the content.
I see that in iOS such a property does not exist. When there are dynamic data to be bound to a UILabel, I always need to calculate the height of the data and then assign to the UILabel. This takes a good amount of time and bit painful. Is not there an Auto property or am I missing anything here?
iOS has AutoLayout which is really helpful, get familiar with it.
Click on the Label
Click on the pin constraints button (little square button)
Add your custom LEFT, RIGHT, TOP margins or LEFT, RIGHT, BOTTOM margins
Click on "Add 3 Constraints"
Set number of Lines to 0 which means as much lines as view needs
Then you probably got warning lines, but you can solve them
Just click on fix constraints button (little triangle button)
Click update frames
UPDATE
Important: the answer to your question is to PUT NUMBER OF LINES TO 0 you can use that UILabel with 0 lines(which is autosizing) with frames and AutoLayout. AutoLayout is just a friendly suggestion that can be helful to setup views. Also put Line Breaking Word Wrap
Here you go also with some useful links for working with AutoLayout. AutoLayout is great because you don't care anymore what size is the screen, what orientation has the device at that moment. You just need to setup everything correctly and everything works amazingly but if your setup is wrong then AutoLayout might become your enemy. So start learning and experiencing right now.
Very good point to Begin learning AutoLayout
If Your are being lazy, start from video tutorial series
Great iOS7+ table view tutorial with autoresizing cells
Also check out this Stack Overflow discussion
You need to familiarize yourself with Auto Layout:
Auto Layout dynamically calculates the size and position of all the
views in your view hierarchy, based on constraints placed on those
views.
Just give top, left and right constraints and make label's numberOfLines to 0. That's it. Label's height will resize automatically.
I'm having some issues developing an iPhone application. I have a UITableView on a screen and have made a template for how I want to lay things out. I made sure that the constraints are satisfied and when my program compiles, I get no auto layout issues. However, when I run my program on the simulator, some of the text is not shown but I know it should be there. Here is how things look on the Storyboard:
However, this is how things look when I run the program on the iPhone simulator, it appears as so:
I am only worried about the From Date and To Date fields not being displayed because if I move them more to the left, I can eventually see them. Moreover, I made sure to make the To Date field's Trailing Space to Container Marginby 8 px so I don't really understand why these two fields aren't showing. Any help would be appreciated. Thanks!
Edit: Image of To Date constraints:
Edit 2: Image of how table view cell looks like now:
Most likely the labels are not showing because of size classes and the difference between the different screen sizes. In your story board the original view controller is a square shape. Make sure to pin the labels to the side of the cell that you want them to attach to. This will make sure they stay where you want them to. Also make sure that you pin the actual table view to the superview so you can see the labels. I have always pinned to the top, bottom, and both sides, to accommodate different screen sizes and rotation. You may need to change the constraints for the other size classes. This may make some things look they are bunched up a bit with the smaller screen size, but you can always change the font or the format of the cell to fit everything in.
If you want to change a constraint for another size class, just select that size class at the bottom of the story board. Select the label, and then in the size inspector you can make the constraints you don't want to be unable, and hook up some other constraints to make it work. Ray Wenderlich's web site has a great tutorial on size classes and adaptive layout. You can find it here.
Happy coding!!
Your "missing" labels are probably too far to the right, outside the screen boundaries. This could happen if your view controller is wider in the storyboard than when you run it. Make sure that your labels have constraints for trailing space -- that will cause them to always be within the screen bounds no matter the screen width.
Also, use the Debug View Hierarchy in Xcode to see where those labels actually end up.
UPDATE:
Try overriding awakeFromNib method in your UITableViewCell subclass:
override func awakeFromNib()
{
contentView.autoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight
}
I'm using Xamarin Studio for iOS development and I've just started to use the Xcode Interface Builder and it is giving me headaches. My Xcode version is 5.1.1(5B1008) and I'm on Xamarin Studio 5.5 build 227 with Xamarin.iOS 8.2.0.193 on Starter Edition.
I'm not able to understand how to use the Auto-Layout functionality and I've read tutorials, most say the say, drag element into view, click on Pin icon, set constraints and be done with it.
But the elements I add don't end up looking as I want them to be.
For example let's say I want to create a view with a scroll view in it and that will display labels and text fields in it as if it were a form, by dragging-dropping element imagine I end up with something like this:
The layout I desire is for every label and text field to be 11 dps apart from the left and right, no matter the orientation, also each needs to be 11 dps apart from each other, with the initial label to be 50 dps apart from the top of the scroll view.
Every element should be the same height (20 dps) always but their width must change according to the left and right constraints.
That's the end of my layout definition.
Now let's start with defining the left and right constraints along with the height. What I do is to select all of the label and textfields, I pin the left and right and set their height to the same value:
But what I get looks like this:
The resulting layout looks nothing like I wanted, the width for every element is set to the same size and the right values don't make sense, I stated 11 dps but I get values like 187, 173 and 228.
Even if I set the top and bottom constraints, the right constraints keep looking the same:
How do I fix this? I've deleted and started from scratch several times but I can't find to understand what am I doing wrong. Some of the technical language challenges me sometimes (I'm not a native english speaker) so I don't know if I'm interpreting something differently.
Some of the links for the tutorials I've looked into are this, this and this.
You need to ask Interface Builder to update the frames of those elements. All those yellow lines/numbers are constraints that are currently not satisfied - the frames of the elements don't match what the constraints require.
However, it's often better to make sure you have all your constraints set up first, before asking IB to update the frames.
Here, I've set up all the constraints you described, but I haven't asked IB to update the frames:
Here, I've asked IB to update the frames of all views in the top-level view:
If I select the subviews, I can see that the constraints are now shown in blue, meaning they are satisfied: