autolayout | Auto Layout and Visual Format Language | iOS library
kandi X-RAY | autolayout Summary
kandi X-RAY | autolayout Summary
LUME AutoLayout implements Apple's Auto Layout and Visual Format Language in Javascript (TypeScript), and will soon compile to WebAssembly via AssemblyScript for optimized layout calculation. Auto layout is a system which lets you perform layout using mathematical relationships (constraints). It uses the LUME Kiwi library to do the actual constraint resolving and implements Apple's constraint system and Visual Format Language (vfl) on top of that. It supports the Extended VFL syntax, including view-stacks and z-indexing.
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QUESTION
I'm creating a grouped UICollectionView, and it seems that the top has 35 pixels of extra padding at the top I don't know how to get rid of.
It appears this is also a problem with UITableView and I've found some questions to address it here and here, but those solutions don't work for UICollectionView.
Here's how I initialize my UICollectionView:
ANSWER
Answered 2022-Apr-16 at 21:11As I was writing this question I found one more stack overflow answer, which finally gave me an answer that worked for me. I used method 4:
QUESTION
I have a line graph that I'm plotting in python. The last thing that I need to do is add a line telling it to color a section of the graph red if the slope is greater that 25. How would I do this?
Here's what I have so far.
...ANSWER
Answered 2022-Mar-25 at 19:59import pandas as pd
import matplotlib.pyplot as plt
data = pd.read_csv('ReactorStartupTemps.csv')
print(data)
plt.rcParams["figure.figsize"] = [7, 5]
plt.rcParams["figure.autolayout"] = True
plt.xlabel('Time [min]', fontdict = {'fontname': 'Times New Roman',
'style': 'italic'})
plt.ylabel('Temperature [C]', fontdict = {'fontname': 'Times New
Roman',
'style': 'italic'})
plt.title('Reactor Startup Temperatures', fontdict = {'fontname':
'Times
New Roman', 'style': 'italic'})
slope, intercept = np.polyfit(np.log(data.Time), np.log(data.Temp), 1)
if slope > 25 :
plt.plot(data.Time, data.Temp, color = "red",linewidth = 1.5)
else:
plt.plot(data.Time, data.Temp, color = "black",linewidth = 1.5)
plt.minorticks_on()
plt.grid(which = 'major', color = 'grey', linewidth = .8)
plt.grid(which = 'minor', color = 'lightgrey', linewidth = .4, ls =
'--')
plt.show()
QUESTION
I have the following code:
...ANSWER
Answered 2022-Mar-24 at 16:57A ZStack takes up as much space as its child views need. You aren't providing an explicit frame to the Circle, so how could SwiftUI know that the Circle's size should match that of the icon?
Instead, you should add the Circle as a background to your icon, after applying some padding to the icon.
QUESTION
As you can see in the picture, when I enter the edit mode the delete button appears on top of all the views in the cell. I assume this is because I am using programmatic UI with autolayouts not the storyboard and some of the constraints are preventing actions, but I cannot find out how I can resolve this issue.
...ANSWER
Answered 2022-Mar-17 at 08:48I suspect that when creating your UITableViewCell subclass, you did not add your custom subviews to the cell's contentView.
From the documentation:
The content view of a UITableViewCell object is the default superview for content that the cell displays. If you want to customize cells by simply adding additional views, you should add them to the content view so they position appropriately as the cell transitions in to and out of editing mode.
Sounds like your problem exactly.
QUESTION
I'm trying to learn to build views without storyboard. I tried to build a scrollview. On that scrollview is a UISearchBar, a UIImageView with an image and a UILabel. It works but none of the content moves. The content is all just frozen in place like no matter how far I scroll the search bar will always be on top of the page. and the image on the bottom. I've attached a video to show what I mean. There's also a problem because none of the content is where I want it to be but that's another problem. I realize this is probably because I don't know enough about constraints and autolayout and building views without storyboards.
...ANSWER
Answered 2022-Mar-08 at 22:05First, when constraining subviews in a UIScrollView, you should constrain them to the scroll view's Content Layout Guide. You're constraining them to the view's safe area layout guide, so they're never going to go anywhere.
Second, it's difficult to center subviews in a scroll view, because the scroll view can scroll both horizontally and vertically. So it doesn't really have a "center."
You can either put subviews in a stack view, or, quite common, use a UIView as a "content" view to hold the subviews. If you constrain that content view's Width to the scroll view's Frame Layout Guide width, you can then horizontally center the subviews.
Third, it can be very helpful to comment your constraints, so you know exactly what you expect them to do.
Here's a modified version of your posted code:
QUESTION
I followed this excellent guide by Adam Symington and successfully created the following topographic map of Sabah (a state in Malaysia, which is a Southeast Asian nation). The awkward blob of black in the upper left corner is my attempt to plot certain coordinates on the map.
I would like to improve this diagram in the following ways:
EDIT: I have figured item (1) out and posted the solution below. (2) and (3) pending.
[SOLVED] The
schdataframe contains coordinates of all schools in the state. I would like to plot these on the map. I suspect that it is currently going wonky because the axes are not "geo-axes" (meaning, not using lat/lon scales) - you can confirm this by settingax.axis('on'). How do I get around this? [SOLVED]I'd like to set the portion outside the actual territory to white. Calling
ax.set_facecolor('white')isn't working. I know that the specific thing setting it to grey is theax.imshow(hillshade, cmap='Greys', alpha=0.3)line (because changing the cmap changes the background); I just don't know how to alter it while keeping the color within the map as grey.If possible, I'd like the outline of the map to be black, but this is just pedantic.
All code to reproduce the diagram above is below. The downloadSrc function gets and saves the dependencies (a 5.7MB binary file containing the topographic data and a 0.05MB csv containing the coordinates of points to plot) in a local folder; you need only run that once.
ANSWER
Answered 2022-Feb-28 at 00:14As it turns out, I had given myself the hint to answering point (1), and also managed to solve (2).
For (1), the points simply needed to be rescaled, and we get this:
I did so by getting the max/min points of the map from the underlying shapefile, and then scaling it based on the max/min points of the axes, as follows:
QUESTION
I am having an issue using TypeBuilder to dynamically create a derived type that has a static field of the base type, that is initialized to a new instance of the created type.
Essentially, I want to create this dynamically:
...ANSWER
Answered 2022-Feb-18 at 17:34Thanks to Kirk Woll's tip, I was able to spot my error.
OpCodes.Stsfld not OpCodes.Stfld.
(facepalm)
QUESTION
I'm trying to create a plot with bar and line charts together where each chart corresponds to a column from my pivot table.
I've seen several questions with the same problem as me but non of them helped me. I want my first column of the dataset as a bar chart and the second as a line chart, with a different scale.
Here's my code:
...ANSWER
Answered 2022-Feb-13 at 19:44Here is an example to demonstrate one way to do it:
QUESTION
I am creating a launch screen that has a centered image. I want the image to be 0.7 of the width in portrait orientation and 0.7 of the height in landscape orientation, so the image is the same size in both orientations, but relative to device size. It would be smaller on iPhones and larger on iPads, while supporting both orientations on iPad.
I can do one of those constraints but not both. For example, if I make it 0.7 of the width in portrait then it looks good in portrait but then oversized in landscape, and vice versa.
How do I create such autolayout purely in interface builder? (I'm assuming launch screens must only use IB.)
...ANSWER
Answered 2022-Feb-11 at 09:23You need to make constraints in respective of the view. For that, you need to follow the steps mentioned below :
- Select your imageView.
- Hold the control key and move your cursor to the main view.
- Now click Equal widths constraint and give it the desired multiplier.
- Repeat the above steps for the Equal Height constraint.
- You are ready to go.
QUESTION
I have a TableView in a ScrollView. I set some constraint and auto layout to dynamic cell and dynamic height of table view. But i get some problems with each cell, some of each cell don't show all of content. Any body help?
And auto layout of number in right of information label
Code of table view
...ANSWER
Answered 2022-Jan-24 at 11:26add this 2 lines in viewDidLoad
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