iOS：briefcase run iOS Pause here.

[jlij]

Configure argc/argv...
Initializing Python runtime...
Installing Python NSLog handler...
Running app module: littlebee

/Users/goodtime/Library/Developer/CoreSimulator/Devices/D0F568D7-8062-4C66-B538-4D36F30E4BD7/data/Containers/Bundle/Application/02B3D6A9-3F0C-4264-B8EE-AD5343568DF5/LittleBee.app/app_packages/toga_iOS/app.py:95: DeprecationWarning: There is no current event loop
self.loop = asyncio.get_event_loop()

[freakboy3742]

I have no idea what you're trying to communicate. Is this a question? A report of a problem? A request for assistance?

If you want someone to help you, you need to ask a full question, and provide enough detail for them to actually help you. A stack trace with no context doesn't do that.

[jlij]

Sorry, it did not generate a problem report.
Can be successfully installed on virtual iOS, but gets stuck when entering the interface.
Made with BeeWare
The clue that can be given is the first time I sent it out.

[freakboy3742]

Again - what are you asking for? Is this a request for assistance? A report that something has gone wrong? What do you mean by "gets stuck"?

It's literally impossible for us to help you unless you tell us what you have done, what you expected, and what is happening.

[jlij]

Compiling iOS App on macOS，Using commands “briefcase run iOS" ，Successfully installed App，
But when opening the app, it always gets stuck on the "Made with BeeWare" page.
I have tried multiple versions of toga，But the results are all the same.

[freakboy3742]

What iOS app? Are you doing the BeeWare Tutorial? Is it an app that you've written? What version of iOS are you using? What version of Xcode? What version of macOS?

If you don't give me enough information to reproduce the problem you're seeing, there's very little I can do to help you.

[jlij]

macOS: Big Sur 11.4
Xcode: 13.2 (13C90)
iOS:15.2
python:3.11.3
The program is used to access the database，The access database driver used is “pg8000”。

[jlij]

Received, thank you for your reply.

[jlij]

According to your method, find the reason: pg8000 does not seem to support iOS.
What should I replace it with?

[freakboy3742]

Having not tried to access a Postgres database from iOS, I can't recommend an alternative.

[jlij]

Based on your experience, what database should I use?

[freakboy3742]

As a database I'd always recommend Postgres, unless your data set is small and local, in which case SQLite might be an option. But I haven't tried to access Postgres from iOS, so I can't recommend a DBAPI wrapper.

[jlij]

toga==0.3.1：
App finished launching.
Not implemented: TextInput.clear_error()
Not implemented: TextInput.set_on_lose_focus()
Not implemented: TextInput.set_on_gain_focus()
Not implemented: TextInput.clear_error()
Not implemented: TextInput.set_on_lose_focus()
Not implemented: TextInput.set_on_gain_focus()
Child process terminated with signal 15: Terminated

[jlij]

Is it caused by Textinput.

[freakboy3742]

In the near future, we're going to stop responding to your requests, because you are not providing any details that would help us diagnose a problem.

We have an extensive test suite that validates that TextInput works on iOS, so from our perspective, TextInput works.

It is entirely possible that you have found a bug. However, we do not have magic powers, and we cannot read your mind. We don't know what is in your code. If you want us to help you, you need to provide us enough detail to reproduce your problem.

This means providing explicit reproduction instructions - the exact code that reproduces a problem, and the precise conditions under which you are operating, the exact inputs you provide to generate a problem, and the full logs for what happens when the app crashes.

This does not mean that you send us the complete code for your entire custom project. It means you need to generate a reproduction case - the simplest app that demonstrates the problem you are seeing.

Unless and until you provide these details, we are unable to help you.

And, to be clear - this isn't a "once off request". It applies to every bug report you make of the BeeWare project - and, for that matter, any other programming project in existence.

[jlij]

Received, thank you for your reply.

[jlij]

After investigation, it was found that it is not a problem with "pg8000" and it can obtain data normally. Guess it's the "data" issue with the DetailedList. The format of the "data" strictly follows the example you provided, and it works normally on Windows, Android, and MacOS, except for exceptions on iOS. If you give an empty "list" to a "data", it can run normally.

[jlij]

import toga
from toga import App, Box, DetailedList
from toga.constants import COLUMN
from toga.style import Pack

class HelloWorld(App):
    def startup(self):
        self.dl = DetailedList(style=Pack(flex=1)
        self.box = Box(
            children=[self.dl],
            style=Pack(direction=COLUMN))
        self.dl.data = [{'icon': None,
                         'title': 'John Doe',
                         'subtitle': 'Employee of the Month'}]
        self.main_window = toga.MainWindow()
        self.main_window.content = self.box
        self.main_window.show()
def main():
    return HelloWorld()

[mhsmith]

it works normally on Windows, Android, and MacOS, except for exceptions on iOS

I'm not sure if you're still asking for help, but if you are, you'll have to post the exception.

[jlij]

There is no way to issue an exception report because it did not generate. The above code is the cause of the problem. After using "briefcase run iOS" and installing the app into virtual iOS, it will pause on the startup page and disconnect from macOS. After removing the code, it is found that there is a problem with "data" in "DetailedList". Adding data will cause the problem. Providing an empty list will allow it to run normally, and the data format will follow the methods provided in the tutorial, And it can run on other platforms. After disconnecting, the input on the console is:Child process terminated with signal 15: Terminated.

[jlij]

Really in need of help, can you paste the above code into the macOS environment to compile iOS, and open and run it to understand the problem I'm talking about?

[freakboy3742]

I can confirm the iOS DetailedList widget appears to have a bug at present. I'm not sure what the source of the problem is, but the DetailedList example app doesn't current run either. We're in the process of auditing and building automated tests for all the widgets; DetailedList will be looked at reasonably soon.