iOS : Size classes issue - ios

I'm creating a UI using size classes. As you can see in the below picture , there's issue with iPhone 6 Plus . Please help iPhone 4s always creates a mess. Do tell me if the UI is correct?
Image description:

Hope this helps!!
Select Login Merchant button, Blue and Pink button with OR label and put them in Stack View with Vertical axis. name it as (Bottom StackView)
Put some proper spacing between them.
If your image height is not fixed then make it relative to the device height, that means create a height constraint of imageView = (1/3)height of mainView.
Also you can take Label and textField Username in Horizontal StackView then combine both textFiled (username and pass) and Label in Vertical StackView.
Make vertical constraints Greater Than Equal to 20 between Bottom StackView and Center StackView.
this will give to better result in all screens.
In Case if you don't use StackView then,
Combine Bottom 3 button in SingleView (BottomView) and Upper textFields and Labels in SingleView (CenterView).
Then set vertical spacing s Greater Than Equal to 20 between them.
Make your image height as relative to screen size as described above.

Related

Trouble with layout on various screen sizes

My screen layout has elements placed correctly
but when I switch to another screen, eg. iphone 7 plus
or se
things change. I've set constrains, height and witdh when I suppose I should, but apparently it does not want to cooperate with me. Please tell me what constrains and heights, widths should I set.
Add below constraint
For the red and green View You need to give Equal Width Constraint.
For Blue View at the center you need to give Center Horizontally Constraint.
For the bar at the bottom You need to give Bottom distance from the Red/Green Top Constraint.

Constraints not resizing properly for all screen devices

I am trying to do the constraints for these horizontals button. I want the ratio of size of buttons to be the same, and the icons to be of equal widths and heights of each others.
Any idea of how i can do that so these buttons resize properly according to the screen size? Thanks!
Make groups of UIView containing the icon and text. Lets call this container view
Place all the n container views inside your storyboard as you would like them to appear. Now:
To the left most container view add a leading and bottom constraint to the super view.
Now to the second container view add a leading space of 0 (or anything you want). Control + drag your second button to the first button. Hold down shift and select equal width, equal height and align bottom.
Now apply the same constraints as your second container view to all your n - 1 container view. n being the number of container view you want to add. Now to your last (nth) container view add, one extra constraint, which would be a trailing space to the superView. Now all your container view ought to have an equal width that will be determined depending on the width of the screen!
If you want to have a specific height or aspect ratio to all your container view. Just add the height or aspect ratio constraint to your first container view and all your subsequent views will get updated accordingly.
OR
If you wish for the height to be dependent on the screen size and not maintain a specific aspect ratio, then you will have to give the first container view a equal height to the whole view with a specific multiplier like 0.15.
You will also have to add appropriate constraints to the icon and label present inside each UIView
Edit: A much easier thing for you to do would be add the icon as an image to the UIButton and add the text as you would normally to the UIButton. The UIButton will appear quite similar to the screenshot you posted. And then just apply the constraints I mentioned above.
Set the width and height as ratio of the SuperView. Set if for one button and for the remaining buttons make the height and width equal to the first button for which you defined the height and width in terms of superview height and size. Use this SO Post to see how to set height and width as ratio of the superview.
Hope this helps.
It's Simple because your All buttons are in single Direction so you can use StackView.
Just simple first apply the equal hight and equal width to all your buttons
now select all the buttons and add them in the stackview
it will be in the right side bottom. (with the constraint icon)
now simple Apply add missing constraint. it will done the work by own and gives better result. (but take care here apply it from the all views in View Controller Section)
And now Bingo try this every Size will show same.
This will work same in simulator also.
The solution is very simple.
See the image below (5 buttons)
The first (blue) button is pinned to the left and bottom of the superview
Each of the other 4 buttons (red, black, green, pink) are top aligned to the first (blue) button
Each button is using a horizontal spacing to the previous button (with a constant of 0). So red button has 0 horizontal spacing to blue, black has 0 horizontal spacing to red, etc
The Last (pink) button is also pinned to the right of the superview
Finally all 4 other buttons are set to have same width to the first (blue) button
That's it!
As for you icons, all you need is to set them to have same width & height to the first icon you have

Autolayout Issue with Multiple Button Aligned Horizontally & Vertically with a Label

Please look at the ScreenShot attached for wCompact|hRegular for different screens, I am trying to make it working since hours but not getting any success. My requirement is that at the top there would be a label with some predefined margin. Although the Label content would render at the runtime, but I know the content size, so resizable label isn't needed actually I think. Now there would be three row at equal distance. In first and third row, there would be two buttons with equal height and width and in second row there would be button aligned horizontally. I have set the buttons image and text in storyboard. Control Alignment are set to Horizontal | vertical. Constraints for label are:
Pinned top space to superview, leading and trailing space equals to:8(superview), height equals:90.
Constraints for Button(View Transactions) are:
top space to label, bottom space equals to:8(New Launches Button) leading and trailing space equals to:8(superview) and 8(Place Request Button) respectively, and equal width and height for all buttons.
Looks fine for 4.7 and 5.5 But not satisfied with the output for smaller screens. As u can see resizing of buttons image not working properly(Larger space between button's image and text). One more thing is I don't wanna set the height of the label, cause it seems like a wrong practice in AutoLayout. Any help would be much appreciated.
You should set the Aspect Ratio for the Buttons, not just the equal width and height. In that case auto layout wont shrink the images.
Really you should put this into a scroll view so that if the height is too great the user can still see everything by scrolling. You should also not set static heights on labels, you should allow the intrinsic content size to apply.
Add a subview to your new scroll view. Pin the width of this subview to the width of the scroll view. Do not pin the height.
Add all of your buttons and labels to this new subview. Pin them to the edges of the view and allow the intrinsic content sizes to apply limits. Set various items to have equal widths and heights. Do not set explicit heights or widths (do everything by proportion or equality so auto layout can choose good sizes).

How to manage the gap between two views in auto layout

I am using auto layout for my ViewController I know how to define the gap between two views using constraints programmatically. What I want to do now is when the screen size increase, increase the gap also. Because my UIViewsare positioned properly in iphone 4s and 5s but in 6 and 6 plus they are positioned in a small area of the screen. I know adding multiplier we can set the aspect ratio of a view but, how to increase the gap between 2 views when the screen hight increase.
UPDATE
Let say this image,, there is a logo above this please login label.
This is my verticle position constraint
V:|-70-[Title]-130-[lblFirst]-0-[lblSecond]-20-[textusername]-10-[txtpassword]-10-[btnLogin]
this Title is an image 130pix above to this Please Login label. I want to increase this 130 when it comes to iphone 6 and 6 plus
Take a UIView with alpha 0 and clear color and use it instead of the gap and use aspect ratio to the view used for gap and top and bottom or left and right whatever your situation to the views between whom you want to make the gap dynamic. And also you need to add some more alignment constraints to the gapView but it will work. I could not found any other method to do this easily so i have used this method everywhere in all projects and all working fine. I think UIView with clear color and alpha 0 will not effect the screen or performance in any way. We can use this.
Here is an example like if you have two text fields vertically and you want to increase the gap between them dynamically then take a view between then with the exact same width of text field and add those constraints.
1) Top of GapView to upper text field.
2) Bottom of GapView to below text field.
3) Equal width to any text field or leading and trailing to superview or main view.
4) Proportional Height to main view(you can add this constraint by adding equal height from subview to any of superview and then by changing the multiplier);
And your GapView will increase and decrease accordingly.

Resize proportionnaly between iphone 4 and 5 screens with XCode

I am trying to use auto layout in x code to correctly resize my view to switch between iphone 4 and 5.
I have a similar problem as the one presented in the picture. Let's consider the UILabel at the bottom is fixed.
I want the top UILabel to be at the middle of the space between the navigation bar and the bottom label. I don't know how to add a constraint that says "top space and bottom space must be equal". As a result, I can only fix one of the two constraints and I cannot get the expected result.
Thanks
The way I do this in IB, is to embed the top label in a UIView. Give that view a standard vertical spacing constraint to the top layout guide, and another to the bottom label. Also give it a fixed width. Give the label centerX and centerY constraints to this view, and it should keep it centered in different screen sizes.
How about adding a container view that fills up the space between the 1st label and the navigation bar, and then center the 2nd label inside the container view.

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