I have request from a client to match the "Large Text" font size set in the Accessibility section of the Settings app.
I found a post: But it doesn't actually gives an answer.
I also found this one : but its from last year.
Is there an API to access this feature?
Thanks in advance.
In iOS7 you get that for free with TextKit, and on UIApplication there's a property called preferredContentSizeCategory to access this value directly.
Related
According to this article:
https://useyourloaf.com/blog/restricting-dynamic-type-sizes/
And this WWDC 2021 video:
https://developer.apple.com/videos/play/wwdc2021/10059/?time=879
The minimumContentSizeCategory and maximumContentSizeCategory can limit the min and max font size when user uplevel/downlevel the font sizes in System Accessibility settings.
However I tried it out, and from the debugging info these two settings are properly set, but in view rendering, the font size still goes to very large if accessibility font size is very large.
// before setting
print(label.appliedContentSizeCategoryLimitsDescription)
label.minimumContentSizeCategory = .small
label.maximumContentSizeCategory = .accessibilityMedium
// after setting
print(label.appliedContentSizeCategoryLimitsDescription)
print results:
UILabel:0x7fd610a414a0: AX-L
--> AX-L
UILabel:0x7fd610a414a0: S <= (none->)AX-M <= AX-M
--> AX-M
How can I properly use these two settings?
Any ideas on how to properly use these two settings?
I hope that's the proper way because I use them as you did (and it works).
I created a blank project in Interface Builder (Xcode 13.4.1) as follows:
... and the Dynamic Type feature is blocked within the specified thresholds I defined like you (in the viewDidLoad of the view controller).
I think you should check out the way you created your label because, with the above one, it works like a charm.
I know that unlike the operator name and the country code, it's not possible to get the user's phone number in iOS programmatically (at least not with publicly available APIs).
But I have just tried the app Lyft and it is autosuggesting my current phone number. I want to know how this app is doing that.
The phone number suggestion appearing above the keyboard is a built-in iOS feature and it works if a Text Content Type is set for a UITextField.
Since iOS 10, you can provide a content type for your inputs. iOS then will recommend autofill options for the given content type.
You can set up a content type...
in Interface Builder by navigating to the Text Input Traits section of the Attributes inspector (the fourth icon from the right in the top sidebar):
...or programmatically with:
textField.textContentType = .telephoneNumber
I want to make an app, where font size increase or decrease according to font size maintained in iOS in Settings. If you change font size of your iOS from settings, whatsapp font size displayed accordingly, I want same functionality.
The iOS functionality you're looking for is the Dynamic Type that only works for text with implemented text styles.
Basically, you must :
Use the text styles but beware, their availability depends on your iOS version.
Tick the adjustsFontForContentSizeCategory property (since iOS 10) in your interface builder or implement it in code so as to tell the system to handle automatically the Dynamic Type for the object it belongs to (text styles must be used of course).
Adapt all your constraints to the different sizes your app may encounter.
You can also follow the notifications related to the Dynamic Typeevents as indicated below :
Everything is well explained in this WWDC video detailed summary where all the contents and their video timelapses are indicated to reach rapidly the information.
There's also the possibility of adapting the graphical elements size as well with a Dynamic Type implementation.
All you have to do if to use Dynamic Type for your labels. This means not to set it explicitly but to use styles like Header 1 or caption. This styles are depends on user setting in Accessibility and will change automatically. https://www.raywenderlich.com/77092/text-kit-tutorial-swift
You can use system default sizes for Texts, like,
self.label.font = [UIFont preferredFontForTextStyle:UIFontTextStyleHeadline];
Please find documentation here.
For other components you can use like labelFontSize() and many more,
+ (CGFloat)labelFontSize;//Returns the standard font size used for labels.
+ (CGFloat)buttonFontSize;//Returns the standard font size used for buttons.
+ (CGFloat)smallSystemFontSize;//Returns the size of the standard small system font.
+ (CGFloat)systemFontSize;//Returns the size of the standard system font.
I'm currently building an iOS App in Swift and I got some problems. My settings view is a tableviewcontroller. It's a grouped one. My Table View is dynamic, fonts are dynamics.
I would like to interact to the change of font size from the settings app.
If my application was already running, the font size change but the layout is just broken. (change from the smallest to the biggest font)
Image : Layout bug
If I restart my app with the new font settings, there is no problems...
Here is a XCODE project example, you'll see the bug.
Could you please help me to find a solution ? Thanks.
The UIContentSizeCategoryDidChangeNotification is what you're looking for.
Per the docs:
Posted when the user changes the preferred content size setting.
This notification is sent when the value in the
preferredContentSizeCategory property changes. The userInfo dictionary
of the notification contains the UIContentSizeCategoryNewValueKey key,
which reflects the new setting.
Example callback implementation:
func handleContentSizeCategoryDidChangeNotification(notification: NSNotification) {
self.questionLabel.font = UIFont.preferredFontForTextStyle(UIFontTextStyleBody)
}
After you change the font size try to call
self.view.setNeedsLayout()
it sets a flag in the UIView that marks it as needing layout change.
Also you can try to call
self.view.layoutIfNeeded()
Apple documentation says :
Use this method to force the layout of subviews before drawing. Using the view that receives the message as the root view, this method lays out the view subtree starting at the root.
Hope that help you
Finally, I found that it's an iOS bug. I find the same bug in the Apple Apps.
The bug happens when you set the smallest font, quit the app and set the biggest font.
Thanks for your help.
Bug Settings App
I have a requirement wherein I have to change the text of the return key of the iPad to Sign-in. Obviously it is not one of the options available in the sdk. I have searched it over the net and it seems doing that possible.
The only question remaining is whether the app would be accepted by Apple if I modify the default system keyboard? The HIG is not clear on this , it states that "A custom input view can replace the system-provided onscreen keyboard in apps" and "You can also provide a custom input accessory view, which is a separate view that appears above the keyboard (or your custom input view)". Nothing about whether we are allowed to add an extra button on a system keyboard.
Any experiences??
#Vin you can change the name of return key of the keyboard to your requirement. I have an app that has the changed to return key name to Done and Search. And apple did not reject it.
To "Sign-In" you can use the return key UIReturnKeyJoin
textField.returnKeyType = UIReturnKeyJoin;
EDIT
Nope. You get the return key and
keyboard types defined in the OS.
Unless you want to try to hack the
keyboard's view hierarchy to change
that button, which would be a really
bad plan. (Standard recommendation
here is to file a bug report with
Apple to let them know you'd like
more/different options.)
see Custom iPhone return key text
Since I didn't get any satisfactory answer, I convinced the client that it would be inappropriate to modify the default system keyboard for a sake of one button(even if it is allowed by Apple). We are now going for the "Go" option available for return key.