PieChartView | 安卓自定义View之带动画的饼状图

So I created an app and I am trying to add some data to firebase when a user signs up. So on my sign up page I have a sign up button which creates the firebase user, add some data to firebase and then switches to homepage.

The problem is that it does not seem to wait for my asynchronous actions to finish before switching to homepage (which creates several problem later but that is not the point). In order to come to this conclusion I made several tests with delayed print functions and it confirms what I just explained.

Note that I also tried to use then instead of async and await but still the same problem and I already searched similar problems but I can't find any solution.

Another precision : all my other problems don't occur when I sign in, so the problem seems to be in the sign up process.

So I was wondering if I didn't make something wrong in the button action function.

I am trying to create a statistics page for my app that will have various charts that are created dynamically depending on the type of data the user has. To do this, I am stacking multiple ViewControllers according to this tutorial: https://swiftwithmajid.com/2019/02/27/building-complex-screens-with-child-viewcontrollers/

I am running into an issue where the ViewController's View is added to the main StackView as an arrangedSubView, but instead of it stacking the views vertically and allowing me to scroll through them all, it just stacks them on top of each other in the z-direction.

Here is the StackViewController Code:

I'm trying to include a simple pie chart in my app using Core Animation. I found an article on-line to copy and adjust, which seems to be close to what I need.

https://github.com/tomnoda/piechart_ios

The code refers to Nib files (which I don't really understand), but can I do this programmatically instead? I think this is the line of code that needs to change, and maybe I need to add some other coding as well:-

I am using iOS charts to make a pie chart, and I cannot figure out how to set the colors as custom colors with RGBA values. here is the code

I'm having difficulty formatting my custom legend entries for my pieChartView. I need the legend entries to be different than those on the pie chart (why I need to customize). The below works but anything larger than size 6 text (which is too small) results in overlapping. How can I resize the legend to fit small text?

(Screenshot is with size 10 text)

I'm having a hard time tracking down the bug here. I have an AlertDialog.Builder firing up a custom dialog where I should have a PieChart drawn using arcDraw and Canvas, problem is that if I take the app with debugger I can see my chart getting drawn righ first time then a 2nd call gets in and messes everything up and I can't tell where it is coming from, need help, some ideas?

THE CODE :

I'm currently using Charts with CocoaPods and I have an issue that I don't quite understand.

I created a subclass of PieChartView and overwrote the function calcMinMax from PieChartView in my custom class, allowing me elsewhere to create a custom pie chart of my data.

I've changed the function in PieChartView from internal override func calcMinMax() to open override func calcMinMax(), allowing me to override it in my custom class using public override func calcMinMax():

I am using PieChartView to draw following Pie chart in my app. My requirement is to show only %(percentage) not the key name.

This is my code to draw pie chart in view

screenshot

I have a problem with piecharts not showing in my custom tableview cell. The tableview cells are added through storyboard, each cell contains a small icon image, two labels and a UIView which I set in the view inspector as PieChartView.

The small icon image and the text in the two labels is showing fine, no problem there. For the piecharts however, I get no error message but simply none of the charts is displayed. The table shows up, is filled with the proper texts in the labels but the piechartview is empty except the middle hole of the piechart. When I click one of these, the piechartview is displayed - not totally correct (only one of the two pie slices is displayed, the other part is missing).

The touch event therefore makes the slice visible, but I want the piechart be visible for all cells upon running the cell for row function.

I have added the code for the tableviewcontroller and the tableviewcell. Would be great, if someone could point out my error. I have researched and tried a lot, among others the following stack overflow resources: Charts not plotting in tableViewCell iosChart not displaying LineChartView points in UITableViewCell Adding a SubView to UITableViewCell doesn't get displayed How to implement iOS Chart in a tableview cell?

The screenshot shows the situation after I click a few of the invisible piecharts. They become visible, also when I then scroll down the table some more (not all) of piecharts in random cells are visible, some are not.

Code for tableviewcontroller: