I am making the layout of my app comparable with 3.5 inch devices. However, I am confused with Constraints and Auto Layout.
I am trying to make a view always be in the center of two views regardless of the screen size but whenever I do this it always goes behind another view.
The 4 inch view:
The 3.5 inch view:
If someone could help me figure out why this is happening I would be grateful.
You can add a wrapper view (normal UIView is okay), align the top bound with the bottom of "safe", align the bottom bound with the top of the circle. Two constraints should be added automatically. Then put your inner view at the vertical center of the wrapper view.
Your Constraints should be like this
I(any y value you want your UILabel to start at)
I(+30)
UILabel (Safe)
I(+30)
UITExtField
I(+30)
UIView that contains all Number Buttons.
Adjust all accurately that it work in least possible dimensions. i-e 3.5
Related
I have an Iceland map which contains 9 different area buttons. Every button has a different size. I want the map can show the same on different devices. I only know to set the central button with horizontally in container and vertically in container. However, other buttons, no matter how I set the constraints, they will be a mess on iphone SE or iPhone Plus. (I use iphone 8 as normal)
Can anyone teach me how to set the constraints for the 8 left buttons? thank you!
The best thing for this is a vertical UIStackView nested with 3 horizontal stacks
MainStackView constraints
centered vertically & horizentally , width & height propotional to screen
then drop 3 stackViews inside it set axis = horizontal and drop 3 Buttons for every inner stack
Note: distribution is fillEqually for all the stacks , spacing = 10
look to this Demo
Something I've done in the past is used a single control as the anchor for all the others.
Basically this means taking the centre button and anchoring it to the middle of the container view (centre horizontally and vertically)
I then constrain the middle/top and bottom controls to it (vertical space and horizontally centred)
From there each control in the row is then constrained against these elements (horizontal spacing and vertically centred)
You might also consider constraining the sizes to the centre control as well, so all the controls share the same size. For me, this means constraining the width of the control to a set value and then applying an aspect ratio to the height. I do this because then I can change the value of the width constraint and ALL the control will change size
Because iPhone 5s, iPhone, iPhone+, iPhone X all share the same "sizing classes", it makes it some what more difficult (as you can't apply traits - but you can do it for iPad and iPhone ;)).
At this point, I would bind the centre controls width constraint (and the height if you need it) to the source code and when the view is loaded, determine the device screen size and make minor adjustments to the constraints values.
If you would prefer a complete "storyboard" solution, you could constraint the width of the centre control to the super view and apply a modifier
Using the "device" templates from the storyboard, layout one a iPhone 5s and iPad Pro
The long and short of it is, you have "options". You might even consider using UIStackView to define the rows, personally I find it easier to constraint the controls to a central anchor point - but that's my experience and your needs might differ
I want to achieve consistent views across different screens. My layout constraints works on small screens perfectly but it scrambles on large screens.
I have made a view(Red Border indicating that view)and pin it in to the main super view. Then I have made sub views and put it inside that view. I have pinned the the top bottom trailing and leading edge of the layout which contains button of the it's parent view (Red Border indicating that view). The view containing button is looking like this in small screen (iPhone 5)
while it's looking in big screens like this (iPhone 6 and above)
I want this layout to have the same relative height in all the screens like the other views. How can I achieve this?
I guess you can use UIView that contains a button inside and set bottom,lead,trailing,top constraints for the UIView. Then you can set height constraint of that UIView and set multiplier values to have relative height to its superView(=Red box). Finally, you can set constraints for your button inside the UIView whatever you want. If you know how to use StackView, I recommend you to use it because it is easy and simple solution. Here is very good tutorial about StackView.
If height is constant for subview except that button view the layout will be like what you mentioned in the first image .If you kept height as constant for that button view the problem will be solved
Currently i am trying to use AutoLayout on my iOS app in xcode 6. The storyboard I am using consists of only UIButton and UILabel elements, which i would like to resize and fit based on the device. Everything works on the iphone 6 Plus and 6 but when I get to the 5S or 5 things get weird. I can't use size classes necessarily due to both 5s and 6/6P using compact width regular height. IS there a way to fix this?
all images can be found here
Yes! With autolayout there's always a way.
From those pictures it looks like you may have a vertical constraint on the "play" button that is attached to the top of the view. Try putting that constraint on the "How Long" label. That way the button position will be relative to the title instead of the whole screen.
Check to see that you have the following constraints :
Center all buttons and labels horizontally in the container (note,
this is 3 different constraints you need to set). You can select
all 3 at once and from the Align menu center them horizontally in container.
Constrain How Long to Top Layout Guide (Top Space to Top Layout Guide)
Constrain Play to How Long (pin vertical spacing)
Constrain Leaderboard to Play (pin vertical spacing)
Depending on how you want Leaderboard to float you may want to pin it to the Bottom Layout Guide instead of to play. The buttons and labels will then move according to your constraints.
I went through ray wenderlich's tutorial about autolayouts (link) and then began working on a demo project thinking I've figured it all out but I was wrong. As shown in the screenshot below I have a navigation bar, 2 views and 1 button. The layout on portrait mode looks fine without adding any constraints on views or the button, and understandably in landscape mode views are messed up. I tried adding following constraints on views and those don't seems to work.
View#2: Select view 2 > Editor > Align > Horizontal center in container (hides view completely)
Add Top space to superview. Again view goes away from both landscape and portrait preview.
If I can display view#2 correctly I am planning to add vertical space between view#2 & view#3 and then between view#3 and button#4.
My main concern is to resize the views so that it shows all views and buttons in iPhone 4s landscape mode. Any advise or suggestions are appreciated.
EDIT: Here's the end result that I am trying to get:
The reason your views go away when you add constraints is because a UIView has no intrinsic content size, so its size is {0,0}. The view appeared when you didn't add constraints because the system adds constraints for you, if you don't add them yourself; the system added ones are top, left, width, and height. So, you need to set the size of the views somehow. You can give them explicit size constraints, you can pin them to the edges of the superview, you can give them relative heights based on other views, etc.
Since you want the 2 views to get proportionally smaller in landscape, you should give them heights that are relative to the superview. You do this by selecting the view and the superview, and choosing "Equal Heights" from the pin menu. Edit that constraint to change the multiplier to something like 0.25 for the blue view and 0.2 for the orange one (this assumes that orange or blue view are the first item in the constraint -- if they are the second, then you should use the inverse values of 4 and 5). You should also do the same for the widths, since it seems you want them to get proportionally smaller too.
I'm using Interface Builder in Xcode 6 to make an app and am having trouble getting the text fields and button to centre on the screen for different size screens.
I thought it was a matter of selecting horizontal and vertical centering in container but it doesn't seem to be that when I try it in auto layout. Actually I've tinkered around a bit and I still haven't got it.
I just want to be able to see all of my button and text fields for any size iPhone screen and right now simulator is only showing part of these UI elements like this:
I also want to do this in storyboard and not in code as I'm not at the level of doing this in code yet.
Step 1: Make sure your size class covers all the iPhone screen at least in portrait view. So, change the size class to "wCompact hRegular".
Step 2: After setting the size class properly, add the UITextFields and UIButton to your storyboard. To me, it looks something like-
Step 3:
Before, you start adding constraints, you need to remember two things-
a. Your element(UITextField, UIButton, UIView or any component) needs to know its starting position unambiguously, and
b. Your element needs to know its size meaning, its height and width.
In this case, as you want to centre your elements, I am just assuming that it needs to be centred starting from 10 scale from the left edge and should end 10 scales away from the right edge of your iPhone screen. Now, that means, it's width will be different based on the screen size, but its height will be same.
So, I just add the constrains following way for the 1st text box-
Notice, in the size inspector, I set the text box's starting point, x and width in a way that it is 10 pt away from left edge and 10 pt away from the right edge. Don't worry, it's just simple math.
For the 2nd textField, I add the constrain, the same way-
Lastly, for the button, the constrains are following-
Now, you are good to go. Everything is centered.
By using your size class selector in the bottom of the storyboard window, set you sizes as any width and any height and then follow the below auto layout constrains. It will work for you.
First select the view you want to set the auto layout, and then select the pin option from the right bottom corner of your storyboard and then add the constrains as shown in above picture and click button Add 4 constrains
Repeat the process for all views and set the constrains as Fix the top, bottom, left and right constrains of all views except the last button that should be fix from top,left,right and fixed height.
You need to make use of the size class selector in the bottom of the storyboard window.
So for an iPhone 6 or 6 Plus in portrait you would choose a compact width and regular height like this:
And then you would do whatever auto layout stuff for the given device there