I am working on my first Today Centre widget, which simply consists of three labels on the default storyboard. It's working fine, but I read in the iOS Human Interface Guidelines that secondary text should "use the system-provided vibrant appearance" with notificationCenterVibrancyEffect.
What's the correct way to add this vibrancy effect to my two secondary labels? I've read about UIVisualEffectView, but it's still not clear to me how to use it for this purpose. I don't think I want to put a blurred view behind my labels because Notification Centre already blurs the background.
UIVisualEffectView when configured with a UIVibrancyEffect is meant to be used as a container—just drop your labels in its contentView and you’ll get the appropriate appearance on top of the Notification Center blur. The text color doesn’t matter; when it’s added to the contentView it gets special treatment and effectively always renders with the same appearance, though you can still adjust the alpha of the view (not of the text color) to make it more or less prominent.
good day, first of all u should use a correct view hierarchy, when U add some objects in your VisualEffectView example:
UIVibrancyEffect used in combination with UIVisualEffectView, adjusts the colors of the content to make it feel more transparent. UIVibrancyEffect can blending some objects
with the background example:
More particularly to your question(https://stackoverflow.com/a/25392645/4912496) Apple recommends to use vibrant effect for secondary text, because its simply beautiful for example(apple native app use vibrant effect, and Sports.ru don't use it):
But, some apps don't use this effect...
To ensure that your widget gets the vibrancy effect that’s appropriate for displaying items in the Today view, use notificationCenterVibrancyEffect.
Some info. https://www.omnigroup.com/developer/how-to-make-text-in-a-uivisualeffectview-readable-on-any-background
Related
I need to have a circular UIButton that draws a custom color in the middle, along with an outer ring that is drawn as the default tint color (similar to a UIColorWell).
I've tried a few different approaches:
Using a multicolor SFSymbol: This would be an elegant solution, but as far as I can tell there's no way to apply the tint color to just a part of the image while setting the center to be a custom color. Either the entire image is tinted, or the image is drawn as the default colors set in the symbol file. Also, I need to support iOS 14, while the new hierarchical options that may allow me to accomplish this were added to iOS 15.
Setting various layer properties (ie, cornerRadius, borderColor, etc): This works and may be a decent fallback solution, but I'm unable to get the look that I'm going for (namely, having a transparent ring between the outer border and inner colored circle).
If there's a way to use either of the above options, please educate me! Either one seems like a better solution than:
Overloading the draw function: This is the option I'm going with at the moment, as it allows me to have complete creative control over the look of the button. The rest of this post will be regarding this method.
So far I was able to get the button to be drawn exactly as I wanted. However, I am unable to figure out how to draw the button appropriately with regards to various state changes.
For example, if a popover is displayed, all of the normal buttons are automatically redrawn as disabled. My custom button, however, isn't redrawn so I am unable to respond to the state change.
Same thing with tapping on the button - normal buttons are briefly shown in an emphasized color but my custom button doesn't respond.
Does someone have an example as to how to support overriding UIButton drawing with various states?
I was able to get the desired behavior by overriding tintColorDidChange in order to trigger a redraw of the button. Now I am able to draw the outer ring in the correct color (including grayed out when a popover is displayed) while maintaining the desired inner color.
no code to show here, but I would like to know how it may be possible to do this. I have tried to use
.blur(radius: (20)
on a view, but it tends to blur the entire view. Including the text, and anything else in the view. The default background color is fine and I don't want/need to change it (in order to keep the app compatible with light/dark mode). I want to make the view's background slightly blurred/opaque, but I want the text and buttons in the view to still remain full and normal. Is there any way possible to just blur the background color of the view itself?
It is possible to apply blur directly to background only, like in the example below
Button("Test") {}
.background(Color.red.blur(radius: 20))
I'm writing an iOS application, and I would like to use a view that has randomized moving colors in the background, much like the view that is brought up when you use siri. The view used for siri seems to be slightly darker than a standard dark UIBlurEffect and there are random colors added that move slowly around the view whenever queries are made.
Below is an example of the background I'd like to create. There's some red in the top right of the blur and some green in the top left. Plus some light purple or something at the bottom.
siri query view
The colors fade and new colors are added every queries, I honestly have no idea how to accomplish this, so any help that anyone has would be great.
Also, I'd like the answer to be in Objective-C if at all possible.
You refer to UIBlurEffect and it is key here. It provides a blur over a background, but doesn't specify what that background is. So, create that background to be a set of coloured views which appear (fade in perhaps), move around and then disappear. How you control the start and end location and the path the views follow is up to you. The effects view will apply the blurring for you and you can add whatever content you want in the foreground to the content of the effects view.
I have made a custom number pad keypad for my iOS app, but want it to more closely mirror the appearance of the standard keyboard. I am looking for advice on how to make a standard UIButton look and act like the standard keyboard buttons.
Specifically, I need to figure out the following for the iPad and would like to do as much as possible in an xib or storyboard.
The size of the buttons
The color of the keyboard background (or even better, how can I determine this myself?)
The background color of the button
The font and color of the text in the button
How do I add the shadow under the button?
How do I have the button highlight with the grey color instead of blue?
The spacing between the buttons
How do I keep the "group" of buttons centered as a whole when changing the orientation? (all of the resizing options anchor it to a side and not to each other)
Do the standard buttons use images, or do they modify standard UIButton's? Or more appropriately, which is better for us to do?
UPDATE:
I have created a project for the number pad which is a complete working example. However, I have not spent much time on the actual appearance, which is what this question was mainly about. I have posted it on Github and made it an open source project (covered by the MIT licence, so commercial use is allowed as well). Hopefully other people will find it useful, and hopefully others will feel inclined to help make it better and look more like the native keyboard. The Github repository is at:
https://github.com/lnafziger/Numberpad
If you want to do it mostly in IB, then the following can be done:
Size
Colours
Background Color
Font
Text Color
Shadow (to UILabel's not UITextArea)
Spacing
AutoSizing
There is a cool PSD vector kit for all types of iOS elements that should help:
http://www.smashingmagazine.com/2008/11/26/iphone-psd-vector-kit/
Anyway, to the rest of the answers:
Size
Take a screenshot of the buttons and determine the size in Photoshop, or you can use CMD+i on the image file to see the pixel dimensions. Remember to use CMD+Shift+4 and then drag (and then Space to make the screenshot).
Colours
Use the DigitalColor Meter app that's preinstalled on the Mac, it's pretty cool for all kinds of functions.
Background Color for UIButton
The actual UIButton will have a background color of [UIColor clear], however, for the whole keyboard background, it would be best to create something similar in Photoshop and again using color pickers to get the right gradients. Then you could drag this into IB as a background image.
Font
Again, have a look at fonts/try Helvetica
Text Color
[UIColor black]
Shadow:
Programmatically:
[text setShadowOffset:(0,1)]; // One option
[text setShadowOffset:(0,-1); // Another option
[text setShadowColor:[UIColor whiteColor]];
But, you can also set the shadow in the IB inspector for a UILabel.
Button highlight
Look at the UIButton reference
http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIButton_Class/UIButton/UIButton.html
Spacing & Rotation
If your using IB, then you could just drag on the buttons to whatever location.. IB has some autosizing options that determine where the buttons are spaced according to the TOP, LEFT, RIGHT and BOTTOM. You can also set if they are stretchable or not.
i think it not use private API , it will be rejected?
self.navigationController.toolbar.frame =
CGRectMake(self.navigationController.toolbar.frame.origin.x,
self.navigationController.toolbar.frame.origin.y,
self.navigationController.toolbar.frame.size.width, 60);
apple says u wont by programatically.
Guidelines
Use a toolbar to provide a set of actions users can take in the current context.
Use a toolbar to give people a selection of frequently used commands that make sense in the current context. An alternative is to put a segmented control in a toolbar to give people access to different perspectives on your application’s data or to different application modes (for usage guidelines, see “Segmented Control”).
Maintain a hit target area of at least 44 x 44 points for each toolbar item. If you crowd toolbar items too closely together, people have difficulty tapping the one they want.
Use system-provided toolbar items according to their documented meaning. See “Standard Buttons for Use in Toolbars and Navigation Bars” for more information. If you decide to create your own toolbar items, see “Icons for Navigation Bars, Toolbars, and Tab Bars” for advice on how to design them.
Try to avoid mixing plain style (borderless) and bordered toolbar items in the same toolbar. You can use either style in a toolbar, but mixing them does not usually look good.
Specify the color or translucency of a toolbar, when appropriate. If you want the toolbar to coordinate with the overall look of your app, you can specify a custom color. You can make a toolbar translucent if you want to encourage people to pay more attention to the content underneath the bar. Make sure the toolbar customization you do is consistent with the look of the rest of your application. If you use a translucent toolbar, for example, don’t combine it with an opaque navigation bar. And, avoid changing the color or translucency of the toolbar in different screens in the same orientation.
On iPhone, take into account the automatic change in toolbar height that occurs on device rotation. In particular, make sure your custom toolbar icons fit well in the thinner bar that appears in landscape orientation. Don’t specify the height of a toolbar programmatically.
http://developer.apple.com/library/ios/#documentation/userexperience/conceptual/mobilehig/UIElementGuidelines/UIElementGuidelines.html#//apple_ref/doc/uid/TP40006556-CH13-SW33