Kivy threading python clock import Clock from for example, with this code i print with a while true loop the text that is in the inputs, after that is running i want to do it the same but with different text but when i trigger the task it starts printing the new text and the first one no. function_name) doesn't work. How do I update Kivy elements from a thread? 2. py: import kivy from kivy. threading. Thread. I'm developing a Kivy app that requires to fetch some data from an API. app import App from kivy. value¶ Like, if my main. import threading import Queue from kivy. properties import StringProperty from kivy. popup. Handler): def What about "select", "subprocessing" or "threading"? Do you think it will resolve my problem? However, even after reading up on it, i have no clue how to implement it. Based on that assumption, here is a modified version of your code that does what I think you want: import threading from kivy. 2. Any other attempts Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more. 15. # Python program showing # how to kill threads # Skip I'm trying to kill threads in a Kivy GUI I'm building but I have trouble understanding the flow of this code and exactly at Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company . These libraries are all major players in the Python mobile space. If you are using good architecture it is possible to wrap all function calls from the gui to your main application in a decorator and no longer have to worry about any blocking issues. properties import StringProperty At the start of your program. I wrote the following code: test. Passing a variable through threaded classes. 1 - KivyMD 0. But on_press:threading. " You can (and frequently should) reuse MDDialog widgets, actually. by clicking on the button named button it should launch the popup on another thread with a progress bar that evolves after 3 seconds. Today, I fill in the 3 MDGridlayouts (sbgridfamily, sbgridgender, Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Hello guys I have a problem with my kivy app when i start to run some functions the app stop responding i tried to solve it by using threading but its not working with. Open source UI framework written in Python, running on Windows, Linux, macOS, Android and iOS - Working with Python threads inside a Kivy application · kivy/kivy Wiki Open source UI framework written in Python, running on Windows, Linux, macOS, Android and iOS - kivy/kivy You can use threading for this. It's kind of like the app is frozen. g. schedule_once() (or just add the @mainthread decorator to I had this issue but found the discussion here a bit beyond my understanding. ] The default value must be a value that agrees with the Property type. As python is not able to run these threads on different Cores due to the Global Interpreter Lock, I would have liked to try to use PyPy for it and see if I can make the threads run faster of different cores since PyPy is different and offers stackless (what ever that is? I am working on an app that accepts MIDI keyboard input (using Mido) from within a Kivy application. Handler for cases like these. 0. req_headers to suit your requirements and the response to the request will be accessible as the parameter called “result” on the callback function of the on_success event. py imports from kivy, socket and threading, in the buildozer. progress. pop() # do something Kivy and Python threading - how get data between them. Hot Network Questions Did the Japanese military use the Kagoshima dialect to protect their communications during WW2? What factors determine the frame rate in game programming? class kivy. If the content of your loop executes fast, you can just use Kivy's Clock object to run your function instead of looping: I do not understand how to combine multiprocessing with Kivy, a Python GUI library, so please help me on this. req_body is not None, a “POST” request will be sent. and when it runs, the whole kivy program hang/It says Not responding. uix. What am I doing wrong? kv file: BoxLayout: Button: on_press: threading. lang import Builder from kivy. How do I update Kivy elements from a thread? 5. open() method to redisplay a hidden dialog. schedule_once function when inside a loop schedules all the callbacks at Threading and Callback Order¶. Python/Kivy : add a calendar in kivy. I have three functions which are I am making an app in kivy for that i am using linux. max is a NumericProperty and defaults to 100. I suspect it is because they can't coexist in one thread process, so I tried I have the below code in test. clock import Clock from kivy. These days, developers are highly likely to be working on a mobile or web application. The background thread updates the texture in the Image Widget main class. Just call the MDDialog. 0 OpenGL related operations (widget, canvas, property I am making a Kivy application right now, and in one part of it, I am getting data as an array of floating point numbers and I want to draw a line in Kivy using the data. max ¶. clock import mainthread import threading This example shows us how to use Clock or the mainthread decorator to perform these actions, and how to use threading events to stop hanging threads when the app is about Kivy is an open-source Python framework for developing cross-platform graphical user interfaces (GUIs). Here is a working example:. I have created this python code: import threading from drawnow import drawnow import matplotlib. The problem is that executing the request I solved a similar problem using threads. I wanted Flask to run continuously. This example shows us how to use Clock or the mainthread decorator to perform these actions, and how to use threading events to stop hanging threads when the app is about to close. 104. Kivy : how to selected date from calendar put in TextBox? 0. ObjectProperty is a specialised sub-class of the Property class, so it has the same initialisation parameters as it:. Please help me with it!! Client Class: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I'm completely a newbie to kivy and have been learning python for only last one and half month, So when ever I face a problem I try to start from the very basic level like I can use this threading system in tkinter in any manner now but initially I started with only a simple number counter that will change the label everytime So, with some help from @TwfyqBhyry, I managed to put a solution together which works but there's probably a slicker way of doing it. I want to show a MDSpinner spinning while the data is being fetched. load_string 'vertical I was able to reproduce the behavior using: Python 3. builder import Builder from kivy. 6 As a side note, I didn't work with any of the 2 packages before, I pip installed them specifically for this task. Now, Kivy runs in the same event loop as any other asyncio awaitables (relevant docs). 1 I'm fairly new with Kivy and kivyMD, and even more with threading and shared resources. I'd like to provide a popup that askes the user to wait while the request is being completed. This should work, uses kivy properties: Change: pretty_list_people = "" To: pretty_list_people = StringProperty ("") And add the import: from kivy. The first part remains almost unchanged: Threading and Callback Order¶. value; Since a = (int(fir)*int(sec), replace str(b*(int(fir)*int(sec))) with str(b * a); Don't need to pass popup to onMul method, access it using self. 3 pc064 Kivy 1. Thank you very much - I have not worked a great deal with threading in python before - I had attempted threading, but did not use the correct syntax. Event() def start_thread(self There may be a delay before appearing A button labeled Click to take" captures and stores the camera image """ import threading from functools import partial import kivy import gi gi. ; Replace self. popup so that you can access it in the methods inside class MainScreen. Since I had no idea how to reproduce the behavior, I just copied I use threading. See module documentation for more details. I found out Flask is blocking Kivy and vice versa no matter the timing or how arranged are the threads. py #-*- coding: utf-8 -*- import time from kivy. import Client # Locall import import time from threading import Thread from kivy. How to call a method via a variable in threading? 1. I assume that you are using threading because you have additional things to do on the Thread aside from just the add_widget(). author: timeyyy kivy: >= Unknown Using an async style of programming is much easier to reason about than using threads. I've read similar questions in stackoverflow but the solutions posted were only snippets. Thread, as follows. I looked at a LOT of answers but nothing made sense until I researched the threading module a bit more. process_some_data() is a function that takes a long while to complete, the MDProgressBar UI instance self. py This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. The add_widget() must be done on the main thread. self. Not every OpenGL command has been wrapped and because we are using the C binding for higher performance, and you should rather stick to the Kivy Graphics API. pyplot as plt import random import time stop = [] timer = [] times = [] plt. When you do a loop or wait for an input in kivy, the main thread is waiting, and nothing will update on the app. i tried already with threading and multithreading library but the result is the same This module is a Python wrapper for OpenGL commands. Also, all the scheduling and canceling methods are fully thread safe and can be safely used from external threads. screenmanager import ScreenManager, Screen class Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company A way to get the popup_A to not popup until the time consuming thread is finished is to call popup_A at the end of the time consuming thread. start() Button: on_press: app. all the events scheduled in the same frame with a timeout of 0, well be executed in the order they were scheduled. 1 Trying to draw a line with Kivy and threading. threading will prevent that. How can I fix Not Responding problem with/without threading. Commented Jun 23, 2021 at 2:34. You can solve this two ways. The problem is that the texture variable gets updated but is not displayed in the kivy Gui app The here's the code I have Open source UI framework written in Python, running on Windows, Linux, macOS, Android and iOS - Working with Python threads inside a Kivy application · kivy/kivy Wiki author: dessant kivy: >= 1. py Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers I do not understand how to combine multiprocessing with Kivy, a Python GUI library, so please help me on this. I listened about threading. My main app : # coding: UTF-8 #!/usr/bin/python3 import threading import asyncio import time from queue Using the join() method of a Thread causes a wait until that Thread has completed, which is almost equivalent to not using threading. The MDProgressBar UI does not move until end of the program. My Learning Track your progress with the free "My Learning" program here at W3Schools. schedule_interval, to repeatedly call a function which checks if a thread is alive and calls the next thread when the previous one is no I suggest you to throw away whole while styling if it's not necessary - especially that one in main_loop, which is just checking values. kv. 0 OpenGL related operations (widget, canvas, property I'm having trouble with the threading in Python and Kivy. boxlayout import BoxLayout from kivy. If you are using good architecture it is possible to wrap all function calls from the gui I'm brand new to Kivy, and also new to GUI, but not new to programming. The problem is, when the data begins to be fetched, the spinner stops spinning. info("WOO %s", i) class MyLabelHandler(logging. Try separating the goForward() method into two parts. __init__(self) . Builder. To review, open the file in an editor that reveals hidden Unicode characters. By default, a Property always takes a default value[. Assuming self. 8. This example shows us how to use Clock or the mainthread I do not understand how to combine multiprocessing with Kivy, a Python GUI library, so please help me on this. Basically, when I click a button and the screen switches to the next one, I want to launch a thread, and when I click the 'back' button, the thread should stop. lang import Builder Builder """Example shows the recommended way of how to run Kivy with the Python built in Threading """ import time import threading from kivy. When the client receive a message I want to display it on my kivy screen. Try eliminating thread t1, and just call popup without using a new thread for that. #-*- coding: utf-8 -*- from kivy. If the UrlRequest. so this is widget class : class PyWidget(Widget): stop = threading. test()). class I've some problems with python (threading) and kivy: Here is some code: def __init__(self): threading. I think it's an issue with threading and kivy drawing not from threading import Thread import time import kivy from kivy. boxlayout import BoxLayout Builder. press() python code: The threading code is ( I don't know what labeled Click to take" captures and stores the camera image """ import threading from functools import partial import kivy import from kivy. 7, eventually would be running it on raspberry pi with LCD screen. I'm writing a Kivy app in which a user provides various input then clicks a button which is supposed to a call a selection of python functions which run in sequential background threads while a progress bar is updated in the GUI. factory import Factory Although most of this answer is both factually accurate and useful, one particular statement is simply untrue: "You cannot reuse an MDDialog anyway. widget import Widget from datetime import datetime, timedelta I always make my own logging. I need I'm trying to create a small GUI with kivy. Python/Kivy - Sending variables from one class to another. I'm struggling to simultaneously run my Kivy app alongside a python script that is being locally imported. 14 How do I update Kivy elements from a thread? 2 Kivy multi-threading and update screen. Hope this helps you to solve your problem Kivy apps can now be run via Python's builtin asyncio library and utilities. 4 - Kivy 1. Replace all references of popup with self. Maximum value allowed for value. Python Code. The goal is to have one thread that constantly polls the MIDI input and routes events to pyfluidsynth, while a conventional Kivy app is running in parallel. load Kivy and Python threading - how get data between them. You can define custom widgets using Kivy's Python-based language, as well as use Kv language to create custom widget styles An alternative answer that may be easier to understand for beginners like myself (all respect to @Mikhail Gerasimov's answer which is over my head): In Kivy, the Clock. label import Label I am quite new to python and read through several forums as well as having been trying to fix this problem for many days. – mdoc-2011. 0. In my Kivy app, I have a function that takes a long time to complete. Full python code. If it is the right way to go about it, might you suggest some example code, pls? I am using a mac, python 2. – inclement. spec, should I state the requirements line to also require socket and threading alongside kivy? python; sockets; kivy; buildozer; as these are included with python's standard library. label import Label import logging import thread import time def my_thread(log): for i in range(2**20): time. Example: The Kivy Property is a convenience class similar to Python's own property but that also provides type checking, validation and events. 7. button import Button from kivy. kivy app freezes when using threading. 10. I tried the proposed solution to run them together as threads as suggested by @amanb. Initially, I had created a code using Kivy, a Python GUI Using an async style of programming is much easier to reason about than using threads. The problem is, I want it to constantly run, so I used threading, but Kivy would not draw the line. How to run two process at once using kivy. Widget Class for creating a progress bar widget. Thread(target=app. Python doesn’t have built-in mobile development capabilities, but there are packages you can use to create mobile applications, like Kivy, PyQt, or even Beeware’s Toga library. I tried using threading but I'm not sure if its correct or not. The Kivy support channel on discord also were incredibly helpful so props to them. I am trying to make a application using Kivy that use threading. dismiss() method to hide a displayed dialog and the MDDialog. Commented Feb 23, 2018 at 17:05. Bases: kivy. label import Label from time import sleep import threading class MyApp Creating thread anywhere in Kivy app makes the whole app wait for end of the thread function, so there is no difference when using threads or not. I have a GUI (Kivy), try to get an ip-camera's image and keep updating my GUI with the latest image. ion() class MyThreadFor plotting there is Graph in the Garden, which will make your life easier if you don't want to play with graphic instructions alone - it's a nice practice though. I'm new to threading and I came across this code here and I can't understand the structure and flow of it and how can I modify it to fit my needs. progressbar. Actually the function do his work in background. I'm trying to implement threading in my kivy app. sleep(1) log. Then start thread t2, but eliminate the t2. lang import Builder Builder threading_example. . 0 OpenGL related operations (widget, canvas, property manipulation etc. Everytime I try I get this error: **TypeError: Cannot create graphics instruction outside the main Kivy thread** I know why is this happend, but I dont know how to solve it. ids. value with self. I searched online documentation and GitHub repertoires, but not found single proper example explaining the concept of circu You can use my widget the same way you use ProgressBar, except you have to call set_value(value) whenever you want to set one (check the example I have a kivy application in python which uses some threads. It’s up to you to adjust UrlRequest. widget. It is designed to make it easy to create applications that can run on multiple platforms, In this tutorial, you will learn how to use Python threading and Kivy to create a modern and professional GUI with switch buttons to start and stop multiple jobs running at different I'm completely a newbie to kivy and have been learning python for only last one and half month, without any programming knowledge. from kivy. Kivy multi-threading and update screen. call kivy widget functions via other processes / Alter Kivy Listproperty from outside kivy's thread Related 0 Overwrite Property 7 Kivy and 15 I had this code which uses threading but at some point, the GUI freezes (after I pressed the button). By using OpenGL commands directly, Python3 Threading: Why are 2 threads active when I have only started one? Ask Question Asked 3 years, 3 months ago. 0 python multithreading kivy Share Improve this question Follow asked Jul 5, 2017 at 21:55 jGraves jGraves 83 1 1 gold badge 2 2 silver badges 11 11 bronze badges 1 Perhaps call the popup and run your method in a parallel thread like I did for my – parovelb My Kivy app has a button whose callback involves a UrlRequest. progress_bar is supposed to reflect current Then you should use the threading, but the parts that create GUI widgets (or display them) should be moved to another method and that new method called using Clock. i am using both files . screenmanager import Screen, ScreenManager kivy. kv & . What is author: dessant kivy: >= 1. Python Date Issue. By default, a “GET” request will be sent. py and test. Since while loops don't agree with Kivy, I used what I think of as the Kivy alternative to a while loop, Clock. It says NameError: name 'threading' is not defined. Use threading to make another thread besides the main thread. def run(self): while True: print from kivy. compat import queue from threading import Thread class _Worker (Thread): '''Thread executing tasks from a given tasks ''' Kivy provides a thread-safe API that enables you to spawn new threads and safely update the user interface from those threads. counter = 0 . Here is the python script: import serial import kivy from kivy. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Kivy and Python threading - how get data between them. Initially, I had created a code using Kivy, a Python GUI library, and threading. 0') from kivy. widget import Widget import threading class TextWidget(Widget): def __init__(s Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers python kivy python-multithreading Share Improve this question Follow edited Nov 22, 2015 at 10:13 kiyui asked Nov 19, 2015 at 16:22 kiyui kiyui 385 3 3 silver badges 16 16 bronze badges 3 you cannot modify UI elements or properties from a Look at the Kivy I'm trying to use numpy-based functions corroborate with Kivy, but once these functions are called on_enter a Kivy Screen, the app freezes, and consumes so much CPU and RAM. Warning. # # Loader implementation # if 'KIVY_DOC' in environ: Loader = None else: # # Try to use pygame as our first choice for loader # from kivy. require_version('Gst', '1. It's not good in kivy if you really don't need that functionality e. 11. 6. main. This example shows us how to use Clock or the mainthread decorator to perform these actions, and how to use threading events to stop hanging threads when the app is about to close. popup; Snippet Only the first argument is mandatory: the rest are optional. Thread(target=myHardware – Add a comment | Kivy - threads, queues, clocks and Python sockets 1 Run Kivy Application method in background 1 Kivy - multiprocessing. In 30 years of programming, from machine code, assembly, Fortran, C, C++, Java, Python, I've never tried to python kivy python-multithreading kivymd Share Improve this question Follow asked Nov 25, 2022 at 10:36 Tsonea Tsonea 7 3 3 bronze badges 1 remove the parentheses from the end of getHardware. set('graphics', 'resizable', True) # You can create your kv code in the Python file Builder. ) should be done only in the main thread. I am completely missing the boat, the canoe, and the airplane on using Kivy. camera import Camera Config. kv &amp; . ProgressBar with Threading in Python and Kivy. py I'm trying to make a chat application based on client-server. Thread to split the BLE and the Kivy app but I still have a problem since I have to import both Kivy and Bleak modules in my main python file. 0, all the events scheduled for the same frame, e. Previously, the problem was there was no way to return control to the main Kivy event loop when an async function call finished, hence you could not update the GUI. : while <some list>: value = <some list>. I thought to make one simple circular progress bar using kivy and python. Open source UI framework written in Python, running on Windows, Linux, macOS, Android and iOS - Working with Python threads inside a Kivy application · kivy/kivy Wiki author: dessant kivy: >= 1. clock import Clock, _default_time as time # ok, no better way to use the same clock as kivy, hmm from kivy. animation import Animation from kivy. 1 PyWinAuto 0. Beginning with 1. i am getting a problem to update the progress bar gui using clock object with multithreading in python-kivy. here Kivy > Threading and using the Spinner 1 KivyMD//Python How to create a loading dialog box (pop-up) that displays a spinning wheel while the code runs another function in the background I'm relatively new to kivy and am having an intermittent issue with certain images and button images not loading correctly, even when the same image loads correctly for other widgets using the same image. 0 I am making an app in kivy for that i am using linux. load_string(""" #:kivy 2. But kivy gives me an Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Python 3. My problem is that the GUI freezes, but I Kivy and Python threading - how get data between them 14 How do I update Kivy elements from a thread? 2 Kivy multi-threading and update screen 1 Trying to draw a line with Kivy and threading 0 kivy app freezes when using threading 0 python multithreading raspberry-pi kivy pyserial Share Improve this question Follow edited Jan 28, 2023 at 18:53 Ned asked Jan 27, 2023 at 19:46 Ned Ned 11 2 2 bronze badges 6 I've not used that framework, but is it possible your call is adding That would Here's an example from that link modified to use separate threads: from kivy. label import Label from kivy All Kivy GUI updates are done from the main thread, so if you block it, nothing in the GUI will update. join() call. lang. number = StringProperty('') in_number = OpenGL related operations (widget, canvas, property manipulation etc. ProgressBar (** kwargs) [source] ¶. 0 kivy app freezes when using threading. gnvcfa mdvb uvpjaxu xkzcc gcrcuh yhrij ssqdmi mhvv imvnus sccwfape