On iOS by default if you add the button in SwiftUI its size is equal to the size of the text. Setting the padding to some value expands the size to be bigger than the text by that value.
On watchOS by default the button has the text and background with applied padding. I don't see any way to reduce that padding (to make the button height closer to the height of the text). I have tried with setting padding and frame but it doesn't appear to be helpful - it appears even counter intuitive as increasing the padding reduces the height of the visible button but it keeps the overall size of the button in the layout which still isn't helpful.
Just to note that with storyboards this reduction of height is possible so I would assume that there should be a way in SwiftUI.
Set the button’s buttonStyle(:) to PlainButtonStyle() and you’ll have full control over the padding and frame. The downside is that you no longer get the default button background, so you’ll need to recreate it if you need it.
Related
I have a button inside a horizontal stack view and am trying to give it a border using the Runtime Attributes in Xcode. Here is what my storyboard looks like:
When I run my app the text has no padding so the border fits very tight:
Is there any way to make the border of the button fit a bit looser? I can't seem to make the UIButton bigger since it's in a stack view...
you can look at lowering the content hugging priority of the add button as both are UIButtons and have same compression resistance and content hugging priority and stack view algorithm in such cases stretches the leftmost view.
You have to set a width constraint on the button.
I am attempting to get the auto-layout to work correctly. For some reason, when I change the size of the device, all of the images and buttons are out of place and don't resize at all. This is true for the 3.5 inch screen, as well as the ipad retina. When I run the simulator, the app shows exactly how it shows in storyboard. Auto-layout should be resizing everything so that this does not happen. please help!
The issue is that constraints don't scale. When you set a constraint height to 200 it will always be 200, even if the screen is only 100 high. So what you need to do is try to set constraints that makes the size dynamically rather then set the constraint height/widths yourself.
For instance, on your first label under the UIImageView set the constraints leading and trailing to 20, then set the label constraint to center horizontally on the UIImageView. No other constraints for the label. This will cause the label to shrink in width since its set to be 20 away from each side. The height will not change since there is nothing "pushing" it to shrink since you are missing a few constraints, but basically you need to use the top, bottom, leading, and trailing, constraints to the UIViewController view in order to "scale" the elements.
If you'd like I could try and set the constraints for you if you upload the project and you can then watch how I did.
Edit
It's hard for me to know what kind of behaviour you'd want, but something has to scale or change size in your set up. The easiest would be to resize the UIImageView. It's basically impossible to make it look exactly alike in every screen size, though, so you'll have to play around a bit with constraints until you understand how they work and how to adjust them according to what you want. One way is to create the layout you want and then connect them to code and scale them depending on size of the screen (this is a bit of a pain, I did that in a project recently and it took a bit of time and effort).
The easiest approach is to make the UIImageView to change its size when it needs to, and add extra space in the bottom. Here is a demo project I threw together earlier. Download here
Profile pic
1) first you set the profile pic image center horizontal to the content view
2) set height and width for the profile pic
3)set top space constraints to content view
Change Profile pic label
1)set central horizontal to profile pic
2)set width and height
3)set vertical space between profile pic
Challenges Accepted label
1) set vertical space to profile pic label
2) set Leading space to container
3) set height
and do same for the below two content . i didnt tested. check it and try
After a long night of struggling, I figured out what I needed to do. I was setting the individual view controllers to have a simulated size of 4.7inch. This made it hard for the constraints to scale across all devices since I was setting the constraints for a specific screen size. However, this would be the way to go if using size classes.
I solved my issue by using the standard 600 X 600 canvas that is available before choosing a specific size. This way, I was able to set constraints that scaled down for the smaller screens, and scaled up for the larger/HD screens. This works perfectly with auto-layout. Hope that helps someone!
I don't understand the difference between using BACKSPACE+CMD and just BACKSPACE.
I see that when I use BACKSPACE+CMD on a element in the Storyboard, that element becomes opaque, and using just BACKSPACE it deletes the element. I can't find the answer in the documentation.
As far I know, when opaque, it means the component (constraint or UI element) has been unistalled for a particular size class. For me, the combination is Command + Delete.
From About Designing for Multiple Size Classes (in bold the key part).
With size classes, a storyboard or xib file can be used for any
available screen area. You build your interface as it will look in
most sizes, then update only the parts that need to change when the
available screen size changes.
A size class identifies a relative amount of display space for the
height and for the width. Each dimension can be either compact, for
example, the height of an iPhone in landscape orientation, or regular,
for example, the height or width of an iPad. Because much of the
layout of an app does not need to change for any available screen
size, there is an additional value, any.
Hope it helps.
P.S. Did you check the key binding for your Xcode?
I want to set the content view of a scrollview to whatever the current screen size is, but AutoLayout is doing some funky stuff. This is trivial in code... just create a scrollview with a frame that is the superview's bounds. Then create a content view with the scrollview bounds and populate it and set the alwaysBounces... properties to YES. In interface builder though, this is some kind of sinful thing it seems.
I know Autolayout handles scrollviews totally differently because it wants to infer the content size based on constraints. My approach that failed is setting the scrollview to have 0 distance to its superview (all sides attached). Then, the same with the content view (the single scrollView subview)- attached to all superview edges. Then the precompiler thing complains about not knowing the content size, so I set a width and height constraint at placeholder to be removed at build time. But the result is a (CGRect){0,0,0,0} contentView. The 0 space to trailing edge and bottom of superview are totally ignored.
So how can I make a scrollview with a dynamic content size based on the screen size?
Bonus points if you can explain how you would do the same, but for a content size of 2x screen width.
You can try setting a constraint for the content view's width to equal the scroll view's width (for your bonus question: with a multiplier of 2). Same for height.
Not sure what the point of having a scroll view whose content is always the size of the scroll view is. By definition it wouldn't scroll, right?
I have a TForm object whose height is greater than the required vertical resolution of my screen.
For some reason, Windows doesn't allow the visible (client?) area of the form to exceed the screen resolution, so vertical scrollbars appear on my form.
How would I get a TBitmap image or screenshot of the entire form (no scrollbars, all form components visible) so that all content of the form is visible?
At first you have to make sure the form has no scrollbars. For that you can write an event handler for FormConstrainedResize and adjust MaxWidth and MaxHeight to your needs. If the form size is restricted during design, set the required Width and Height in the FormCreate event to the desired values.
Now you can use GetFormImage to get the screenshot.