As above picture, the blue area is the button, but the title with 0 lines is out of the area, also I tried that set the titleLabel frame with the frame with the button, but still it does not work, so any tips here??
Clip the content to bounds:
myButton.clipsToBounds = true
may be this will help:
1) add a button
2) set line break (see screen)
3) set multimple lines in text (use alt+enter to new line )
4) Set constraints for leading and for top - so width and height can be calculated by autolayout
5) set background color if you need
Related
I want the DecriptionLabel (the Lorem Ipsum one) to have all the text inside it visible. As you can see, it is getting trimmed.
The two buttons should be under everything else, but in the case where DescriptionLabel contains a small text, the buttons should stick to the bottom of the view.
This is why I chose a >= 20 distance between the buttons and DescriptionLabel if it makes any sense.
How can I solve the trimming of the text?
Thanks.
I was originally answering How to make button stick to bottom of scroll view if the content isn't large enough? but since it is marked as duplicate of this one I am posting my answer here. Please try to set your constraints the following way: https://imageshack.com/a/img923/6671/Txzu98.png
The trick is that you set Button.Bottom Equal To ContainerView.Bottom with lower priority (I use 750) than Button.Top Greater Than Or Equal To Label.Bottom (Here I use default 1000)
The Label has to have number of lines set to 0. The height of the button should be set by height constraint (in this case is 50). The Container View Height constraint should be with low priority (in this case 250)
You should run the code to see actual result on device or simulator. Storyboard shows it a bit differently. For the current question:
https://imageshack.com/a/img923/7276/tQeT0h.png The basic idea is the same. Button Down has the same constraints as Button from above answer without Button.Top Greater Than Or Equal To Label.Bottom. There should be fixed vertical constraint between Button Up and Button Down. I am setting Button Up with fixed Height and setting trailing and leading constraint equal to trailing and leading of Button Down. The constraint Button.Top Greater Than Or Equal To Label.Bottom is now Button Up.Top Greater Than Or Equal To Label.Bottom
Have you set numberOfLines for label to 0 (that means autosize the label according to its text length)?
You should add the following constraints:
(following in sudo code)
// Constraints for ScrollView
scrollView.top = ViewController.view.top
scrollView.leading = ViewController.view.leading
scrollView.trailing = ViewController.view.trailing
scrollView.bottom = ViewController.view.bottom
// Constraints for View
view.top = scrollView.top
view.leading = scrollView.leading
view.trailing = scrollView.trailing
view.bottom = scrollView.bottom
// Width of view
view.width = ViewController.view.width
Now you just need to make sure you have layout constraints for each child of the 'view' and it's height will be correct and display the full size of the textview.
Add the following constraint:
scrollview.contentview.height >= safearea.height
This may show an error in interface builder but works in my tests:
To remove the design time error you could set a design time intrinsic content size for the scrollview's contentview (in my case I used the safe area's height of 554):
Another option (without placeholder values in IB) is to create the following constraint...
scrollview.contentview.height = safearea.height
... and change its priority to a value lower than the label's vertical content compression resistancy.
So I have a label that I've made in Xcode's storyboard which I want to later edit in my code. I want it to simulate something like a vertical bar so I am editing its height by doing:
answerE.frame.size.height = -200
The problem comes from the negative number, I want the label to "grow" up so the height has to be negative from its original position... I have the line in code in a simple action on button press, but each time the line is executed the label moves "up" and eventually after 3-4 clicks is out of the screen.
I just want to edit its height, what is the correct way and what am I doing wrong?
My exact line in code is:
label.frame.size.height = -CGFloat(Double(x)/Double(y) * (200))
If you have added the label in storyboard, why not you use constraints to get the result.
Add leading, trailing , bottom and fixed height constraint and connect IBOutlet to height constraint. Change the constant value of height constraint at the event which you want to perform.
If I'm right, you want the label to gain height, keeping the same bottom edge, but the top edge moving up.
In order to do this, you want to change the frame.origin.y as you change the frame.size.height at the same amount, as its placement (and so top edge) is determined by its origin. So maybe make it zero height, place it where you want it in storyboard, and then when you want it to 'grow' by x:
label.frame.size.height = label.frame.height + x
label.frame.origin.y = label.frame.origin.y - x
I am trying to create a button in a Xamarin Forms cross-platform app (iOS and Android), where the button has both text and an image. The XAML is pretty straightforward:
<AbsoluteLayout ...>
<Labels and backgrounds and such>
<Button x:Name="HomeButton2" TranslationX="6" TranslationY="100"
BackgroundColor="#efeff4" TextColor="#4a4a4a"
WidthRequest="58" HeightRequest="76"
ContentLayout="Top,5"
Image="TaskBar_Assets_HomeButtonIcon.png" Text="Home"
Clicked="HomeButton_Clicked" />
</AbsoluteLayout>
but what I get on the iPad is a button where both the image and the text are strangely pushed over to the side:
(the source image "TaskBar_Assets_HomeButtonIcon.png" is 47 x 44 so it should fit fine in the overall button area)
The only way I can find to make this look better, is to make a custom control based on Button, and then I can see that several of the properties of the underlying UIButton seem wonky:
The Control.ImageView.Frame is all zeroes:
Control.ImageView = <UIImageView: 0x12df52940; frame = (0 0; 0 0);
clipsToBounds = YES; opaque = NO; userInteractionEnabled = NO;
layer = <CALayer: 0x173623180>>
The Control.ImageEdgeInsets and .TitleEdgeInsets look odd (the right + left seem like they leave no space for the image or text):
Control.ImageEdgeInsets = {-8.9501953125, 20.33935546875, 8.9501953125, -20.33935546875}
Control.TitleEdgeInsets = {22, -23.5, -22, 23.5}
What I'm doing, is adjusting the Control.ImageEdgeInsets so that Control.ImageEdgeInsets.Left is equal to the half of the (button width minus the image width) and setting Control.ImageEdgeInsets.Right to zero (for no particular reason except that it works)
and then figuring out what to set Control.TitleEdgeInsets was done with trial & error, I ended up with values related to the width of the "Home" text (41 pixels):
Control.ImageEdgeInsets updated to {-8.9501953125, 5.5, 8.9501953125, 0}
Control.TitleEdgeInsets updated to {22, -50, -22, -9}
That results in a reasonable button look:
although it looks like I need to do more trial & error to get the text "Home" actually centered.
But why do I need to go through all this? Why doesn't the button just display text & image correctly in the first place?
And if I do have to go through all this, why are the values for Left & Right for ImageEdgeInsets and TitleEdgeInsets so different?
Most of the articles I have read about images on buttons suggest constructing your own using an Image and a Label in a grid using a gesture recognizer to handle the tap.
You could also try a button and an image in a grid.
Use Margin to adjust placement.
I try and stay clear of absolute layout.
Here's the ButtonRenderer source code from Xamarin.Froms.If you set the ContentLayout to Top, the below codes will be run:
void ComputeEdgeInsets(UIButton button, Button.ButtonContentLayout layout)
{
...
var horizontalImageOffset = labelWidth / 2;
var horizontalTitleOffset = imageWidth / 2;
...
button.ImageEdgeInsets = new UIEdgeInsets(-imageVertOffset, horizontalImageOffset, imageVertOffset, -horizontalImageOffset);
button.TitleEdgeInsets = new UIEdgeInsets(titleVertOffset, -horizontalTitleOffset, -titleVertOffset, horizontalTitleOffset);
}
As the codes show, the Left offset of image is horizontalImageOffset which is labelWidth / 2. The Left offset of title is horizontalTitleOffset which is imageWidth / 2.
So, when the text is wider, the left offset of image will be bigger. When the image is wider, the left offset of text will be bigger.
Edit:
In native iOS, the default layout is like the left image: Image is at left and Label is at right. In Xamarin for Top setting, Xamarin moves the Image up and right, moves the Label down and left to makes them like the right image. I paint this illustration, hope it clear.
I have 2 labels: the description label (w/ red background) and the results label (gray text)
How do i set constraints for this example in order to have the results label with the size of its content and the description label until the results leadingAnchor? (like i have in the second row)
Objective C
[self.customTextLabel.trailingAnchor constraintLessThanOrEqualToAnchor:self.counterLabel.leadingAnchor].active = YES;
[self.counterLabel.widthAnchor constraintGreaterThanOrEqualToConstant:0].active = YES;
swift
titleLabel.trailingAnchor.constraint(lessThanOrEqualTo: counterLabel.leadingAnchor).isActive = true
counterLabel.widthAnchor.constraint(greaterThanOrEqualToConstant: 0).isActive = true
I have a solution that i think it's ugly.
self.counterLabelWidthConstraint = [self.counterLabel.widthAnchor constraintEqualToConstant:0];
self.counterLabelWidthConstraint.active = YES;
And then after i set the text:
self.counterLabelWidthConstraint.constant = [self.counterLabel sizeThatFits:CGSizeMake(CGFLOAT_MAX, self.counterLabel.height)].width;
The way to do this with auto layout is by using the contentCompressionResistancePriority of the 2 labels. Set the pririty to NSLayoutPriorityRequired for the second label and something lower like NSLayoutPriorityDefaultLow for the first label. Then, as long as the 2 labels have proper constraints anchoring them to their superview and each other, the first label should compress while the second label should not.
You just need to increase the horizontal compression resistance of the right/gray label to be higher than that of the left/red label. This tells the visual layout that, in the event that there is not enough space for both labels, the one on the left will be compressed before shrinking the label on the right. 750 is the default for all views, so just increase the right/gray label's horizontal compression resistance to 751 and you should be good to go.
Swift 5 programatically:
<#label#>.setContentCompressionResistancePriority(.required, for: .horizontal)
Labels with this property will not compress horizontally.
You can set constraints for in storyboard itself. Select Label 1 (red back ground) and label's superview set widths are equal constraint. Select Label 1 and double tap on its width constraint, from the resultant window, you could see Lable 1 width equal to superview with value constant as '1'. change '1' to 0.7 or whichever the percentage you want.
I want to create a list of events in my application and I think this would be a perfect look, but I have no idea how to do it. Can anybody help me?
Thanks!!
Check out the following method
1) in the interface builder drag a new UITableViewCell
2) Set the contentView and background of tableview to UIColor.clear / UIColor.clearColor();
2) dragIn a view and adjust the size as per requirement
(This will act as container View i.e the bigger balloon)
3) now select background colour to white and change opacity to 85 - 90 %
this will give you the desired color
4) Add Label o top and select the same background colour and the opacity as 50 % as main view and as there is a difference in opacity of 2 containers you will get the desired effect
5) Connect an outlet connection of the mainView and Label
6) set corner radius to view and and label
self.mainView.layer.cornerRadius = 10; // or anything as per requirement
AND
self.label.layer.cornerRadius = 10; // run it now to adjust the corner radius