I have a Xamarin iOS app that is created with a storyboard. The storyboard is set to view as iPhone 5. I have a webview as below that fits the screen fine. When run on an iPhone 6 plus, it seems to grow fine and fills the entire iphone 6 plus screen. However when used on an iphone 4, a web page will fall off the bottom of the screen... which indicates to me that the webview is too big.
I don't know why it seems to scale up but not down. I need the bottom of the webview to always pin to the bottom of the screen. How can I do this? I have tried the UI constraint icons but they never seem to work as expected. Can this just be done in code instead? Even in iOS objective-c would help as I can convert it to c#.
Any pointers would be great!!
It works on iPhone 5 and the 6 versions because iPhone6/6+ uses a compatibility mode. Resolution of iPhone 4 is smaller. Try single clicking the web view to switch to constraint mode (you'll see T and H shaped handles).
Drag the T shaped ones to the top, left, right and bottom border of the view controller's view. That will constrain height and with to the parent view's size.
Related
I'm creating a simple app that includes a table view using Swift 5 and Xcode 11. Inside the table view(which, by the way, is fixed into landscape), there is a button on the right of the tableview cells and an image view with fixed constraints, size, and width on the left. Everything has been working out pretty well for my app, until I noticed that the image view would kind of 'disappear' if I changed the device to, for example, iPhone 5s, 4s, or even iPhone Pro(I'm testing with iPhone 11 Pro Max).
This is when the device is iPhone 11 Pro Max:
11 Pro Max
This is when the device is iPhone 11 Pro: 11 Pro
And here are my constraints for my image view: Constraints
Any help is appreciated
P.S. Ignore the image view that says 'img'
After seeing both of the screen shots and the constraints I see what is the issue here.
It's the way you have applied the trailing constraint for the image which in your case is 663 (Should not be fixed). What you can try is Give width constraint to the image view and then change the trailing constraint something like below
This should help you.
Also what you have to take care of moving forward is the constraints you choose to apply coz that is the most important thing while desigining Responsive UI
Happy Coding.
right Constraint should be negative,for example,
img.snp.right = view.right - 20
In my iOS app, I just want to have a button located in the middle of screens of multiple devices (like iPhone 6, iPhone SE, iPad Air).
However, surprisingly, it seems not intuitive to do (at least not as Android) in XCode + Xib.
Following shows a trivial example of this problem where I put the button aligned to the middle:
However, unless the "dimension" of the view is set identical to fit the installed device, there is no way to display the button in the middle.
Add horizontal and vertical center constraints as follows and it will always keep your button at center of any screen as shown in the image below
You can also add distance constraints to borders of the screen :
Example
I have developed my App on XCODE 8 which by default removes iPhone 4 emulator and I didn't notice that until I finished my app, and I used Auto layout to make the UI fits all iPhone screens and that what happened (the layout was good on iPhone 7,6,5) the problem is when I additionally installed iPhone 4 emulator I found that the layout is totally missed up and unreadable/usable.
So what options do I have to solve this and make it fit the iPhone 4 screen too with Auto-Layout with missing up the other sizes ?
Here is screen shot of my Login screen on iPhone 6 (4.7") vs iPhone 4 (3.5")
You must always give constraints with respect to other alternative buttons or a view, it should not be hard coded. Try making views programatically, it will be more easy and helpful to you.
It seems like your constraint is set to have a fixed distance related to the top of your screen. So when the screen height get smaller, your views are pushed out of the screen. So to better adjust views position, you can have your views to be related to vertical center. Say your login box is in both horizontal and vertical center, not metter you are using iphone 6 or 4, you should always see your login box.
Just having an Xcode issue that I'm sure is tied to some setting I can't find. Im my storyboard, my content fills the entire view (i.e a background image), but then when I run my app in the iPhone 6 simulator, the background image and all the content don't fill the entire screen. There is white space to the right of and below the content on the simulated "screen".
When I run the app in the iPhone 5 simulator, this isn't an issue and it fills the entire simulated view.
So, what did I miss? I want to make my app work on all models of the iPhone.
Thanks for any help!
There are several ways to solve this, and I guess you are using View Size as Inferred or iPhone4 Inch in Attribute Inspector.
First way is to use AutoLayout at Storyboard to add Constraint.
If you don't want to use this, you should at least set the Autoresizing at Size Inspector.
"White space to the right of and below the content" sounds like there are scroll bars being displayed in your window. The iPhone 6 simulator is a different size, as well, which would account for them not being there on the iPhone 5 sim.
Have you tried going to the Home Screen (Shift + Command + H) in your simulator, and seeing if the white bars remain? On my computer, the white bars are always visible. Annoying, yes, but they don't cover anything or hide any part of the view. It's just a bit of white padding on two sides.
I am using Xcode 4.5 and iPhone 4 and 5 simulator, and the Interface Builder would add a UIButton in the top half of the screen with a top constraint, and add a UIButton in the bottom half of the screen with a bottom constraint.
It works fine on an iPhone 5 simulator, but on the iPhone 4 simulator, the buttons can overlap, or the bottom button may even get positioned above the top button.
I think it is due to the constraint, such as the bottom button "must be 250 points away from the bottom margin". I can't delete the constraint, and if I change it to "250 points or less", it won't work, if I change it to "250 points or more", it won't work either.
Is there a way to:
1) Make it have no constraint, but just position at absolute x and y? (or what about the spring in the past, so that everything is more spaced out in iPhone 5?)
2) Make the NIB into a one for iPhone 4 and 4S only, so that the app works well on iPhone 4 and 4S and just "black barred" on the iPhone 5.
3) Make it work well on iPhone 5 and work well on iPhone 4 as well?
If you know solutions to only (1), (2), or (3), above, please give it regardless, as it is still a viable solution for the transition period.
It is actually very easy to reproduce: Create a simple Single View app using Xcode 4.5, and drag one button just above the center point of the screen, and another one just below the center point of the screen. Then run it on the Simulator. On iPhone 5, it is:
And now stop the app, and change the Device in the Simulator to iPhone 4S (3.5 inch Retina). If you don't stop the app first, the Simulator can crash. Now run the app again, and the buttons will overlap:
I had the same problem, and it was due to a wrong settings for autosizing. To change the autosizing, click on the control in the interface builder, go to the size inspector.
Notice the bold red I's in the autosizing grid, they control placement when the screen is resized (like when going from iPhone 3GS to iPhone 5.
I think it will work best for you if you make your autosizing look like this:
I'm not sure, since I haven't used constraint-based layout (and won't until we drop support for iOS 5). Traditional NIB-based autoresizing will do absolute coordinates.
You can't do that for just one screen, as far as I know — you can disable it for your whole app by removing Default-568h#2x.png.
I'd go for programmatic layout, or if you want the easy way (which will be a pain to maintain), different nibs for different screen sizes. Note that you'll want to correctly handle the in-call status bar too...
EDIT: Put the two buttons in a container view and make the constraint center the container inside its parent? It won't adjust the spacing between buttons, but should look okay on both devices.
Select your buttons and add "vertical spacing" constraint for them. And set "less than" for top/bottom margins.